{"title":"Timber Decking","description":"\u003cp\u003e\u003cstrong\u003eHardwood decking in Melbourne\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGreenhill Timbers stocks hardwood decking at our yard at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Merbau has been our specialty since we started out importing timber, and we also stock Australian Spotted Gum, Blackbutt, Ironbark, Grey Box and Silvertop Ash.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich hardwood for your deck?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/collections\/merbau\"\u003eMerbau decking\u003c\/a\u003e\u003c\/strong\u003e: 90, 140 and 190 × 19 mm, kiln-dried, Standard and Better grade, in set or random lengths. Orange-brown that darkens with age, Janka hardness 8.5 kN, Class 1 durability above ground, and rated to BAL-29. It can bleed tannin onto paving, so seal every face.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/spotted-gum-timber-decking\"\u003eSpotted Gum\u003c\/a\u003e\u003c\/strong\u003e: 86 and 135 × 19 mm, including 5.7–6.0 m long lengths. Light brown to dark red-brown, Janka 10.1 kN, Class 1 above ground, BAL-29, and less prone to tannin bleed than most species.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/blackbutt-timber-decking\"\u003eBlackbutt\u003c\/a\u003e\u003c\/strong\u003e: 86 and 135 × 19 mm. Golden yellow to pale brown, Janka 8.9 kN, Class 1 above ground, BAL-29.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/iron-bark-timber-decking\"\u003eIronbark\u003c\/a\u003e\u003c\/strong\u003e: 86 and 135 × 19 mm. Grey ironbark, the densest timber in our range at Janka 16 kN, with Class 1 durability above ground and in-ground. Rated to BAL-19.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/greybox-timber-decking\"\u003eGrey Box\u003c\/a\u003e\u003c\/strong\u003e: 86 and 135 × 19 mm. Janka 15 kN and Class 1 durability above ground and in-ground; rated to BAL-19.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/silvertop-ash-timber-decking\"\u003eSilvertop Ash\u003c\/a\u003e\u003c\/strong\u003e: 86 and 135 × 19 mm. Pale brown, Janka 9.7 kN, Class 2 above ground, and rated to BAL-19 at 19 mm. Its heartwood isn't termite resistant, so protect the subframe.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilding in a bushfire zone?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor BAL-29 in 19 mm boards, choose Merbau, Spotted Gum or Blackbutt. Grey Box, grey ironbark and 19 mm Silvertop Ash are rated to BAL-19. BAL-40 and Flame Zone decks need tested systems. Class 1 above ground means an expected life of more than 40 years out of ground contact.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlanning your deck\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpace joists at 450 mm centres, or 350 mm if the boards run at 45 degrees. Leave 3–4 mm gaps between 86–90 mm boards and 4–5 mm between 135–140 mm boards, following the WoodSolutions deck design guide. A 20 m² deck needs about 140 lineal metres of 135–140 mm board, or about 215–225 lineal metres of 86–90 mm, plus about 10% for offcuts. Fix each board twice at every joist, pre-drill, and use stainless steel within 1 km of the coast or 1 m of a pool. Oil every face and cut end before laying, then recoat at least once a year. We stock the \u003cstrong\u003e\u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\u003c\/strong\u003e and \u003cstrong\u003e\u003ca href=\"\/collections\/decking-oil-and-paint\"\u003edecking oils\u003c\/a\u003e\u003c\/strong\u003e to finish the job.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBring your deck size and we will work out boards, lengths, fixings and oil. Prefer a board that never needs oiling? Compare our \u003cstrong\u003e\u003ca href=\"\/collections\/composite-decking\"\u003ecomposite decking\u003c\/a\u003e\u003c\/strong\u003e. Call 03 9465 9875, Mon–Fri 7am–4:30pm, Sat 9am–1pm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHardwood decking sizes and prices\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePrices as at 19 October 2026, including GST, for pickup from 170 Settlement Road, Thomastown; delivery across Melbourne and regional Victoria is quoted on the order. Stock and prices change, so the product page has the current figure.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/merbau-decking-140x19-long-length-random\"\u003eMerbau Decking 140x19 Long Length Random\u003c\/a\u003e\u003c\/strong\u003e: $12.50 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/merbau-decking-140x19-random\"\u003eMerbau Decking 140x19 Random\u003c\/a\u003e\u003c\/strong\u003e: $10.45 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/merbau-timber-decking-set-lengths\"\u003eMerbau Decking 140 x19 Set Length\u003c\/a\u003e\u003c\/strong\u003e: 15 set lengths from 1 m at $7.95 to 5.7 m at $76.38 per board.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/merbau-decking-90x19-random\"\u003eMerbau Decking 90x19 Random\u003c\/a\u003e\u003c\/strong\u003e: $6 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/merbau-decking-90x19-set-length\"\u003eMerbau Decking 90x19 Set Length\u003c\/a\u003e\u003c\/strong\u003e: 15 set lengths from 1 m at $5.30 to 5.7 m at $49.02 per board.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/190x19-merbau-decking\"\u003eMerbau Decking 190x19 Set Lengths\u003c\/a\u003e\u003c\/strong\u003e: 3 set lengths from 1.8 m at $49.50 to 2.4 m at $66 per board.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/silvertop-ash-timber-decking\"\u003eSilvertop Ash Decking\u003c\/a\u003e\u003c\/strong\u003e: 135 × 19 mm $17.50 per lineal metre; 86 × 19 mm $8.95 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/spotted-gum-timber-decking\"\u003eSpotted Gum Timber Decking\u003c\/a\u003e\u003c\/strong\u003e: 135 × 19 mm random length $16.50 per lineal metre; 135 × 19 mm long lengths (5.7-6.0m) $140.36 per board; 86 × 19 mm random length $9.60 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/blackbutt-timber-decking\"\u003eBlackbutt Decking\u003c\/a\u003e\u003c\/strong\u003e: 135 × 19 mm $19.90 per lineal metre; 86 × 19 mm $10.36 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/iron-bark-timber-decking\"\u003eIron Bark Decking\u003c\/a\u003e\u003c\/strong\u003e: 135 × 19 mm $15.90 per lineal metre; 86 × 19 mm $10.62 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/greybox-timber-decking\"\u003eGreybox Decking\u003c\/a\u003e\u003c\/strong\u003e: 135 × 19 mm $15.90 per lineal metre.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRelated ranges\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMerbau in every size and length, with a worked 20 m² example: \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking range\u003c\/a\u003e. Frame and fixings: \u003ca href=\"\/collections\/treated-pine\"\u003eH3 treated pine joists\u003c\/a\u003e, \u003ca href=\"\/collections\/timber-posts\"\u003eposts\u003c\/a\u003e, \u003ca href=\"\/collections\/decking-accessories\"\u003estirrups, joist hangers and decking screws\u003c\/a\u003e, \u003ca href=\"\/collections\/decking-oil-and-paint\"\u003edecking oil\u003c\/a\u003e. Prefer no oiling: \u003ca href=\"\/collections\/composite-decking\"\u003ecomposite decking\u003c\/a\u003e. The same species as flooring: \u003ca href=\"\/collections\/solid-timber-flooring\"\u003esolid timber flooring\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestions we get asked about hardwood decking\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich hardwood decking is best for Melbourne?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMerbau is the value pick: stable, Class 1 durable above ground and accepted to BAL-29. Spotted Gum and Blackbutt are the Australian hardwoods with the same bushfire rating. Grey ironbark and Grey Box are the hardest-wearing boards, and Silvertop Ash is the pale, lighter option.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many lineal metres of decking per square metre?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAbout 11 lineal metres per square metre for 86 to 90 mm boards with a 4 mm gap, and about 7 for 135 to 140 mm boards. Add 5 to 10% for cutting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat joist spacing does 19 mm hardwood decking need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e450 mm centres for boards laid square to the joists, or 350 mm when the boards run at 45 degrees.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a permit to build a deck in Victoria?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMost decks do. Small, low decks can be exempt, but anything attached to the house or more than 800 mm off the ground generally needs a building permit. Our \u003ca href=\"\/blogs\/guides\/deck-permit-rules-victoria\"\u003edeck permit guide\u003c\/a\u003e walks through the rules.\u003c\/p\u003e\n\u003cp\u003eNot sure which species? Our \u003ca href=\"\/blogs\/guides\/decking-timber-comparison-melbourne\"\u003edecking timber comparison\u003c\/a\u003e puts hardness, durability, bushfire rating and price per metre side by side.\u003c\/p\u003e","products":[{"product_id":"merbau-timber-decking-set-lengths","title":"Merbau Decking 140 x19 Set Length","description":"\u003cp\u003eMerbau decking, 140 × 19 mm in set lengths from 1.8 m to 5.7 m: a kiln-dried, Standard and Better grade imported hardwood with a smooth face and reeded reverse, Class 1 durable above ground, and on the AS 3959 bushfire-resisting timber list for decks up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths:\u003c\/strong\u003e set lengths from 1.8 m to 5.7 m in 300 mm steps, so you order exactly what the deck plan needs; also sold in \u003ca href=\"\/products\/merbau-decking-140x19-random\"\u003erandom lengths\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Merbau (\u003cem\u003eIntsia bijuga\u003c\/em\u003e and \u003cem\u003eI. palembanica\u003c\/em\u003e), imported from Southeast Asia and the Pacific; orange-brown when cut, darkening with age; about 830–860 kg\/m³, Janka hardness 8.5 kN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 4–5 mm between boards at installation for 140 mm seasoned hardwood (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e with a 4.5 mm gap, each m² takes about 6.9 lineal metres, so a 20 m² deck needs about 140 lineal metres plus about 10% for offcuts, and roughly 31 fixings per m² on 450 mm joists\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill: WoodSolutions notes Merbau tends to split unless pre-bored. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReeded reverse:\u003c\/strong\u003e WoodSolutions says either face can go up. Reeds add grip across the board but hold moisture, so keep a reeded-up deck clean in damp spots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTannin:\u003c\/strong\u003e Merbau can bleed tannin and gum that stains concrete, paving and brickwork. Seal all faces and cut ends, and to oil new boards straight away, draw the tannin out first with \u003ca href=\"\/products\/intergrain-ultraprep-tannin-oil-remover\"\u003eIntergrain UltraPrep Tannin \u0026amp; Oil Remover\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompare every size, length and price in our \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003e140 x 19mm Merbau Decking Set Lengths\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe \u003cstrong\u003e140 x 19mm Merbau Decking\u003c\/strong\u003e is a premium hardwood that combines natural beauty with exceptional durability. Its wide profile creates a modern, seamless look, making it ideal for decks, pool surrounds, outdoor entertaining areas and boardwalks.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eKiln-dried for added strength and stability, Merbau is built to handle Australia's harsh outdoor conditions. Its rich brown colour and attractive natural grain add warmth and character to any project, while the Standard and Better grade boards provide a clean, consistent appearance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003eKiln-Dried for added strength and stability\u003c\/li\u003e\n\u003cli\u003eStandard and Better grade hardwood\u003c\/li\u003e\n\u003cli\u003eClass 1 Durability (Above Ground)\u003c\/li\u003e\n\u003cli\u003eNaturally termite resistant\u003c\/li\u003e\n\u003cli\u003eWide 140mm profile for a modern finish\u003c\/li\u003e\n\u003cli\u003eRich brown colour with beautiful natural grain\u003c\/li\u003e\n\u003cli\u003eSmooth face with reeded reverse\u003c\/li\u003e\n\u003cli\u003eSuitable for residential and commercial decking\u003c\/li\u003e\n\u003cli\u003eIdeal for decks, pool surrounds, boardwalks and outdoor entertaining areas\u003c\/li\u003e\n\u003cli\u003eCan be oiled, stained or left to naturally weather\u003c\/li\u003e\n\u003cli\u003eAvailable pre-oiled for added protection (top coat required after installation)\u003c\/li\u003e\n\u003cli\u003eAvailable in random and set lengths\u003c\/li\u003e\n\u003cli\u003eSuitable for BAL-29 bushfire-prone areas\u003c\/li\u003e\n\u003cli\u003eComplies with Australian Standard AS3959\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003ca href=\"\/blogs\/guides\/why-choose-merbau-timber-decking\"\u003eWhy Choose Merbau?\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003eMerbau is one of Australia's most popular hardwood decking timbers thanks to its natural durability and long lifespan. It performs exceptionally well outdoors and requires minimal maintenance to keep it looking its best. Regular oiling or sealing will help protect the timber and maintain its rich colour for years to come.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Tip:\u003c\/strong\u003e Most decks are laid smooth face up with the reeded side down, though WoodSolutions notes either face can be used.\u003c\/p\u003e","brand":"Greenhill Timbers","offers":[{"title":"5.7","offer_id":68912075702306,"sku":"GHT-9758","price":76.38,"currency_code":"AUD","in_stock":true},{"title":"5.4","offer_id":68912075735074,"sku":"GHT-9757","price":72.36,"currency_code":"AUD","in_stock":true},{"title":"5.1","offer_id":68912075767842,"sku":"GHT-9756","price":64.77,"currency_code":"AUD","in_stock":true},{"title":"4.8","offer_id":68912075800610,"sku":"GHT-9755","price":60.96,"currency_code":"AUD","in_stock":true},{"title":"4.5","offer_id":68912075833378,"sku":"GHT-9754","price":57.15,"currency_code":"AUD","in_stock":true},{"title":"4.2","offer_id":68912075866146,"sku":"GHT-9753","price":51.66,"currency_code":"AUD","in_stock":true},{"title":"3.9","offer_id":68912075898914,"sku":"GHT-9752","price":47.97,"currency_code":"AUD","in_stock":true},{"title":"3.6","offer_id":68912075931682,"sku":"GHT-9751","price":44.28,"currency_code":"AUD","in_stock":true},{"title":"3.3","offer_id":68912075964450,"sku":"GHT-9750","price":37.62,"currency_code":"AUD","in_stock":true},{"title":"3.0","offer_id":68912075997218,"sku":"GHT-9749","price":34.2,"currency_code":"AUD","in_stock":true},{"title":"2.7","offer_id":68912076029986,"sku":"GHT-9748","price":27.81,"currency_code":"AUD","in_stock":true},{"title":"2.4","offer_id":68912076062754,"sku":"GHT-9747","price":24.72,"currency_code":"AUD","in_stock":true},{"title":"2.1","offer_id":68912076095522,"sku":"MB.D.90-2.1","price":20.48,"currency_code":"AUD","in_stock":true},{"title":"1.8","offer_id":68912076128290,"sku":"GHT-9745","price":17.55,"currency_code":"AUD","in_stock":true},{"title":"1.0","offer_id":68912076161058,"sku":"GHT-9744","price":7.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/Merbau_Set_lengths.png?v=1792365468"},{"product_id":"merbau-decking-140x19-long-length-random","title":"Merbau Decking 140x19 Long Length Random","description":"\u003cp\u003eMerbau decking, 140 × 19 mm in long random lengths from 4.2 m to 5.7 m: a kiln-dried, Standard and Better grade imported hardwood with a smooth face and reeded reverse, Class 1 durable above ground, and on the AS 3959 bushfire-resisting timber list for decks up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths: long random lengths from 4.2 m to 5.7 m, sold per lineal metre, for long runs with fewer end joins; also sold in \u003ca href=\"\/products\/merbau-decking-140x19-random\"\u003e1.8 to 5.7 m random\u003c\/a\u003e and \u003ca href=\"\/products\/merbau-timber-decking-set-lengths\"\u003eset lengths\u003c\/a\u003e\u003c\/strong\u003e random lengths from 1.8 m to 5.7 m, usually the better price per metre; also sold in \u003ca href=\"\/products\/merbau-timber-decking-set-lengths\"\u003eset lengths\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Merbau (\u003cem\u003eIntsia bijuga\u003c\/em\u003e and \u003cem\u003eI. palembanica\u003c\/em\u003e), imported from Southeast Asia and the Pacific; orange-brown when cut, darkening with age; about 830–860 kg\/m³, Janka hardness 8.5 kN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 4–5 mm between boards at installation for 140 mm seasoned hardwood (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e with a 4.5 mm gap, each m² takes about 6.9 lineal metres, so a 20 m² deck needs about 140 lineal metres plus about 10% for offcuts, and roughly 31 fixings per m² on 450 mm joists\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill: WoodSolutions notes Merbau tends to split unless pre-bored. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReeded reverse:\u003c\/strong\u003e WoodSolutions says either face can go up. Reeds add grip across the board but hold moisture, so keep a reeded-up deck clean in damp spots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTannin:\u003c\/strong\u003e Merbau can bleed tannin and gum that stains concrete, paving and brickwork. Seal all faces and cut ends, and to oil new boards straight away, draw the tannin out first with \u003ca href=\"\/products\/intergrain-ultraprep-tannin-oil-remover\"\u003eIntergrain UltraPrep Tannin \u0026amp; Oil Remover\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompare every size, length and price in our \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eMerbau decking 140 × 19 mm in long random lengths, 4.2 m to 5.7 m only. The same kiln-dried Standard and Better grade board as our \u003ca href=\"\/products\/merbau-decking-140x19-random\"\u003estandard random lengths\u003c\/a\u003e, sorted for the long end of the pack, so a wide deck, a boardwalk or a long run along a pool can be laid with far fewer end joins. Sold per lineal metre at $12.50.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBoard:\u003c\/strong\u003e 140 × 19 mm, smooth face with a reeded reverse, kiln-dried, Standard and Better grade Merbau (\u003cem\u003eIntsia bijuga\u003c\/em\u003e). Orange-brown when cut and darkening with age, about 830 to 860 kg\/m³, Janka hardness 8.5 kN.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurability and bushfire:\u003c\/strong\u003e Class 1 durable above ground with termite-resistant heartwood, and on the AS 3959 list of bushfire-resisting timbers, accepted for decks up to BAL-29.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much to order:\u003c\/strong\u003e at 140 mm wide with a 4 mm gap, allow about 7 lineal metres per square metre of deck, plus 5 to 10% for cutting. Joists at 450 mm centres, or 350 mm if the boards run at 45 degrees.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinishing:\u003c\/strong\u003e Merbau bleeds tannin for the first few months, so wash the boards down and oil every face before fixing. We stock \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e and \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e, and the \u003ca href=\"\/collections\/decking-accessories\"\u003escrews, joist hangers and stirrups\u003c\/a\u003e for the frame.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOther options:\u003c\/strong\u003e \u003ca href=\"\/products\/merbau-timber-decking-set-lengths\"\u003e140 × 19 set lengths\u003c\/a\u003e from 1.0 to 5.7 m, \u003ca href=\"\/products\/merbau-decking-90x19-random\"\u003e90 × 19 random\u003c\/a\u003e, or \u003ca href=\"\/collections\/timber-decking\"\u003eall hardwood decking\u003c\/a\u003e. Stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Call (03) 9465 9875 with your deck size and we will work out the metres.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"Default Title","offer_id":68913237721122,"sku":"MB.D.140-1-3","price":12.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/merbau-decking-140x19-long-length-random-4-2-5-7m.png?v=1792367422"},{"product_id":"190x19-merbau-decking","title":"Merbau Decking 190x19 Set Lengths","description":"\u003cp\u003eMerbau decking, 190 × 19 mm in set lengths of 1.8, 2.1 and 2.4 m: a kiln-dried, Standard and Better grade imported hardwood with a smooth face and reeded reverse, Class 1 durable above ground, and on the AS 3959 bushfire-resisting timber list for decks up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths:\u003c\/strong\u003e set lengths of 1.8 m, 2.1 m and 2.4 m, so you can plan joins and cut waste\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Merbau (\u003cem\u003eIntsia bijuga\u003c\/em\u003e and \u003cem\u003eI. palembanica\u003c\/em\u003e), imported from Southeast Asia and the Pacific; orange-brown when cut, darkening with age; about 830–860 kg\/m³, Janka hardness 8.5 kN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide boards:\u003c\/strong\u003e WoodSolutions’ gap table stops at 140 mm and notes that wider boards need more thickness to resist cupping, so give a 190 × 19 mm deck good airflow underneath and seal every face\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e each m² takes about 5 lineal metres of 190 mm board, so a 20 m² deck needs roughly 100 lineal metres plus about 10% for offcuts; tell us the deck size and we will work out the set lengths\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill: WoodSolutions notes Merbau tends to split unless pre-bored. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReeded reverse:\u003c\/strong\u003e WoodSolutions says either face can go up. Reeds add grip across the board but hold moisture, so keep a reeded-up deck clean in damp spots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTannin:\u003c\/strong\u003e Merbau can bleed tannin and gum that stains concrete, paving and brickwork. Seal all faces and cut ends, and to oil new boards straight away, draw the tannin out first with \u003ca href=\"\/products\/intergrain-ultraprep-tannin-oil-remover\"\u003eIntergrain UltraPrep Tannin \u0026amp; Oil Remover\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompare every size, length and price in our \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003e190 x 19mm Merbau Decking – Set Lengths\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe \u003cstrong\u003e190 x 19mm Merbau Decking\u003c\/strong\u003e is a premium hardwood designed to create a bold, modern outdoor living space. Its extra-wide profile delivers a clean, architectural appearance with fewer board joins, making it the perfect choice for large decks, pool surrounds, boardwalks and premium outdoor entertaining areas.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eSupplied in \u003cstrong\u003eset lengths\u003c\/strong\u003e, this profile makes planning your deck easier, helps minimise joins and waste, and creates a more consistent finish. Kiln-dried for enhanced strength and stability, Merbau is built to withstand Australia's harsh climate while showcasing its rich brown colour and beautiful natural grain.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003eKiln-Dried for superior strength and stability\u003c\/li\u003e\n\u003cli\u003eStandard and Better grade hardwood\u003c\/li\u003e\n\u003cli\u003eClass 1 Durability (Above Ground)\u003c\/li\u003e\n\u003cli\u003eNaturally termite resistant\u003c\/li\u003e\n\u003cli\u003eExtra-wide \u003cstrong\u003e190mm profile\u003c\/strong\u003e for a modern architectural finish\u003c\/li\u003e\n\u003cli\u003eSupplied in \u003cstrong\u003eset lengths\u003c\/strong\u003e for easier installation and fewer joins\u003c\/li\u003e\n\u003cli\u003eRich brown colour with attractive natural timber grain\u003c\/li\u003e\n\u003cli\u003eSmooth face with reeded reverse to improve drainage and reduce moisture retention\u003c\/li\u003e\n\u003cli\u003eSuitable for residential and commercial decking projects\u003c\/li\u003e\n\u003cli\u003eIdeal for decks, pool surrounds, boardwalks and outdoor entertaining areas\u003c\/li\u003e\n\u003cli\u003eCan be oiled, stained or left to naturally weather\u003c\/li\u003e\n\u003cli\u003eAvailable pre-oiled for added protection (final top coat recommended after installation)\u003c\/li\u003e\n\u003cli\u003eSuitable for BAL-29 bushfire-prone areas\u003c\/li\u003e\n\u003cli\u003eComplies with Australian Standard AS3959\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose 190 x 19mm Merbau?\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe \u003cstrong\u003e190 x 19mm profile\u003c\/strong\u003e is perfect for homeowners, builders and architects wanting a premium, contemporary decking finish. Its wider boards reduce the number of visible joins, creating a cleaner, more luxurious appearance while speeding up installation.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eMerbau remains one of Australia's most trusted hardwood decking timbers thanks to its exceptional durability, natural resistance to termites and decay, and long service life. With regular cleaning and oiling, your Merbau deck will maintain its rich colour and continue performing for many years.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGreenhill Timbers Recommendation:\u003c\/strong\u003e Before installation, we recommend oiling all sides of the boards, including the underside and cut ends, and applying joist protection tape to the subframe. These simple steps help minimise moisture absorption, improve stability and significantly extend the life of your deck.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"2.4m","offer_id":68913425743906,"sku":"GHT-11430","price":66.0,"currency_code":"AUD","in_stock":true},{"title":"2.1m","offer_id":68913425776674,"sku":"GHT-11429","price":57.75,"currency_code":"AUD","in_stock":true},{"title":"1.8m","offer_id":68913425809442,"sku":"GHT-11428","price":49.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/merbau190x19.png?v=1792367605"},{"product_id":"merbau-decking-90x19-set-length","title":"Merbau Decking 90x19 Set Length","description":"\u003cp\u003eMerbau decking, 90 × 19 mm in set lengths from 1.8 m to 5.7 m: a kiln-dried, Standard and Better grade imported hardwood with a smooth face and reeded reverse, Class 1 durable above ground, and on the AS 3959 bushfire-resisting timber list for decks up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths:\u003c\/strong\u003e set lengths from 1.8 m to 5.7 m in 300 mm steps; also sold in \u003ca href=\"\/products\/merbau-decking-90x19-random\"\u003erandom lengths\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Merbau (\u003cem\u003eIntsia bijuga\u003c\/em\u003e and \u003cem\u003eI. palembanica\u003c\/em\u003e), imported from Southeast Asia and the Pacific; orange-brown when cut, darkening with age; about 830–860 kg\/m³, Janka hardness 8.5 kN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 3–4 mm between boards at installation for 90 mm seasoned hardwood (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e with a 3.5 mm gap, each m² takes about 10.7 lineal metres, so a 20 m² deck needs about 215 lineal metres plus about 10% for offcuts, and roughly 48 fixings per m² on 450 mm joists\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill: WoodSolutions notes Merbau tends to split unless pre-bored. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReeded reverse:\u003c\/strong\u003e WoodSolutions says either face can go up. Reeds add grip across the board but hold moisture, so keep a reeded-up deck clean in damp spots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTannin:\u003c\/strong\u003e Merbau can bleed tannin and gum that stains concrete, paving and brickwork. Seal all faces and cut ends, and to oil new boards straight away, draw the tannin out first with \u003ca href=\"\/products\/intergrain-ultraprep-tannin-oil-remover\"\u003eIntergrain UltraPrep Tannin \u0026amp; Oil Remover\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompare every size, length and price in our \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2 class=\"isSelectedEnd\"\u003e\u003cstrong\u003e90 x 19mm Merbau Set Length\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003eis a premium Australian favourite, renowned for its exceptional durability, natural beauty and long-lasting performance. Featuring rich brown tones and distinctive timber grain, Merbau is ideal for creating stylish outdoor entertaining areas, decks, boardwalks, screening and other above-ground applications.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eEach board is kiln-dried for enhanced stability, reducing movement after installation while providing excellent resistance to everyday wear and the harsh Australian climate. Available with a smooth face and reeded reverse, 90 x 19mm Merbau offers flexibility in installation while maintaining a premium finish.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003eKiln-Dried for improved stability and reduced movement\u003c\/li\u003e\n\u003cli\u003eStandard and Better grade Merbau hardwood\u003c\/li\u003e\n\u003cli\u003eDressed All Round (DAR) finish\u003c\/li\u003e\n\u003cli\u003eClass 1 Durability (Above Ground)\u003c\/li\u003e\n\u003cli\u003eNaturally termite resistant\u003c\/li\u003e\n\u003cli\u003eSuitable for decking, screening, fencing and gates\u003c\/li\u003e\n\u003cli\u003eRich brown colour with attractive natural grain\u003c\/li\u003e\n\u003cli\u003eSmooth face with reeded reverse\u003c\/li\u003e\n\u003cli\u003eReady to oil, stain or leave to naturally weather\u003c\/li\u003e\n\u003cli\u003ePre-oiled option available (final top coat recommended after installation)\u003c\/li\u003e\n\u003cli\u003eAvailable in random lengths\u003c\/li\u003e\n\u003cli\u003eSuitable for BAL-29 bushfire-prone areas\u003c\/li\u003e\n\u003cli\u003eComplies with Australian Standard AS3959\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003eMerbau is naturally stable and highly durable, making it one of Australia's most trusted hardwoods for outdoor projects. To preserve its rich colour and maximise service life, we recommend applying a quality decking oil or timber sealer after installation and as part of ongoing maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e Most decks are laid smooth face up with the reeded side down, though WoodSolutions notes either face can be used.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"5.7m","offer_id":68913426300962,"sku":"GHT-11414","price":49.02,"currency_code":"AUD","in_stock":true},{"title":"5.4m","offer_id":68913426333730,"sku":"GHT-11413","price":42.12,"currency_code":"AUD","in_stock":true},{"title":"5.1m","offer_id":68913426366498,"sku":"GHT-11412","price":37.74,"currency_code":"AUD","in_stock":true},{"title":"4.8m","offer_id":68913426399266,"sku":"GHT-11411","price":32.78,"currency_code":"AUD","in_stock":true},{"title":"4.5m","offer_id":68913426432034,"sku":"GHT-11410","price":30.78,"currency_code":"AUD","in_stock":true},{"title":"4.2m","offer_id":68913426464802,"sku":"GHT-11409","price":28.98,"currency_code":"AUD","in_stock":true},{"title":"3.9m","offer_id":68913426497570,"sku":"GHT-11408","price":25.74,"currency_code":"AUD","in_stock":true},{"title":"3.6m","offer_id":68913426530338,"sku":"GHT-11407","price":24.84,"currency_code":"AUD","in_stock":true},{"title":"3.3m","offer_id":68913426563106,"sku":"GHT-11406","price":21.78,"currency_code":"AUD","in_stock":true},{"title":"3.0m","offer_id":68913426595874,"sku":"GHT-11405","price":19.44,"currency_code":"AUD","in_stock":true},{"title":"2.7m","offer_id":68913426628642,"sku":"GHT-11404","price":16.01,"currency_code":"AUD","in_stock":true},{"title":"2.4m","offer_id":68913426661410,"sku":"GHT-11403","price":14.25,"currency_code":"AUD","in_stock":true},{"title":"2.1m","offer_id":68913426694178,"sku":"GHT-11402","price":10.5,"currency_code":"AUD","in_stock":true},{"title":"1.8m","offer_id":68913426726946,"sku":"GHT-11401","price":9.54,"currency_code":"AUD","in_stock":true},{"title":"1","offer_id":68913426759714,"sku":"GHT-11400","price":5.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/Merbau90x19_setlength.png?v=1792367606"},{"product_id":"merbau-decking-90x19-random","title":"Merbau Decking 90x19 Random","description":"\u003cp\u003eMerbau decking, 90 × 19 mm in random lengths from 1.8 m to 5.7 m: a kiln-dried, Standard and Better grade imported hardwood with a smooth face and reeded reverse, Class 1 durable above ground, and on the AS 3959 bushfire-resisting timber list for decks up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths:\u003c\/strong\u003e random lengths from 1.8 m to 5.7 m; also sold in \u003ca href=\"\/products\/merbau-decking-90x19-set-length\"\u003eset lengths\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Merbau (\u003cem\u003eIntsia bijuga\u003c\/em\u003e and \u003cem\u003eI. palembanica\u003c\/em\u003e), imported from Southeast Asia and the Pacific; orange-brown when cut, darkening with age; about 830–860 kg\/m³, Janka hardness 8.5 kN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 3–4 mm between boards at installation for 90 mm seasoned hardwood (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e with a 3.5 mm gap, each m² takes about 10.7 lineal metres, so a 20 m² deck needs about 215 lineal metres plus about 10% for offcuts, and roughly 48 fixings per m² on 450 mm joists\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill: WoodSolutions notes Merbau tends to split unless pre-bored. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReeded reverse:\u003c\/strong\u003e WoodSolutions says either face can go up. Reeds add grip across the board but hold moisture, so keep a reeded-up deck clean in damp spots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTannin:\u003c\/strong\u003e Merbau can bleed tannin and gum that stains concrete, paving and brickwork. Seal all faces and cut ends, and to oil new boards straight away, draw the tannin out first with \u003ca href=\"\/products\/intergrain-ultraprep-tannin-oil-remover\"\u003eIntergrain UltraPrep Tannin \u0026amp; Oil Remover\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompare every size, length and price in our \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2 class=\"isSelectedEnd\"\u003e\u003cstrong\u003e90 x 19mm Merbau Decking\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003eis a premium Australian favourite, renowned for its exceptional durability, natural beauty and long-lasting performance. Featuring rich brown tones and distinctive timber grain, Merbau is ideal for creating stylish outdoor entertaining areas, decks, boardwalks, screening and other above-ground applications.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eEach board is kiln-dried for enhanced stability, reducing movement after installation while providing excellent resistance to everyday wear and the harsh Australian climate. Available with a smooth face and reeded reverse, 90 x 19mm Merbau offers flexibility in installation while maintaining a premium finish.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003eKiln-Dried for improved stability and reduced movement\u003c\/li\u003e\n\u003cli\u003eStandard and Better grade Merbau hardwood\u003c\/li\u003e\n\u003cli\u003eDressed All Round (DAR) finish\u003c\/li\u003e\n\u003cli\u003eClass 1 Durability (Above Ground)\u003c\/li\u003e\n\u003cli\u003eNaturally termite resistant\u003c\/li\u003e\n\u003cli\u003eSuitable for decking, screening, fencing and gates\u003c\/li\u003e\n\u003cli\u003eRich brown colour with attractive natural grain\u003c\/li\u003e\n\u003cli\u003eSmooth face with reeded reverse\u003c\/li\u003e\n\u003cli\u003eReady to oil, stain or leave to naturally weather\u003c\/li\u003e\n\u003cli\u003ePre-oiled option available (final top coat recommended after installation)\u003c\/li\u003e\n\u003cli\u003eAvailable in random lengths\u003c\/li\u003e\n\u003cli\u003eSuitable for BAL-29 bushfire-prone areas\u003c\/li\u003e\n\u003cli\u003eComplies with Australian Standard AS3959\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003eMerbau is naturally stable and highly durable, making it one of Australia's most trusted hardwoods for outdoor projects. To preserve its rich colour and maximise service life, we recommend applying a quality decking oil or timber sealer after installation and as part of ongoing maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e Most decks are laid smooth face up with the reeded side down, though WoodSolutions notes either face can be used.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"Default Title","offer_id":68913426923554,"sku":"GHT-11359","price":6.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/ChatGPT-Image-Jun-26-2026-02_51_01-PM.png?v=1792367607"},{"product_id":"merbau-decking-140x19-random","title":"Merbau Decking 140x19 Random","description":"\u003cp\u003eMerbau decking, 140 × 19 mm in random lengths from 1.8 m to 5.7 m: a kiln-dried, Standard and Better grade imported hardwood with a smooth face and reeded reverse, Class 1 durable above ground, and on the AS 3959 bushfire-resisting timber list for decks up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLengths:\u003c\/strong\u003e random lengths from 1.8 m to 5.7 m, usually the better price per metre; also sold in \u003ca href=\"\/products\/merbau-timber-decking-set-lengths\"\u003eset lengths\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Merbau (\u003cem\u003eIntsia bijuga\u003c\/em\u003e and \u003cem\u003eI. palembanica\u003c\/em\u003e), imported from Southeast Asia and the Pacific; orange-brown when cut, darkening with age; about 830–860 kg\/m³, Janka hardness 8.5 kN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 4–5 mm between boards at installation for 140 mm seasoned hardwood (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e with a 4.5 mm gap, each m² takes about 6.9 lineal metres, so a 20 m² deck needs about 140 lineal metres plus about 10% for offcuts, and roughly 31 fixings per m² on 450 mm joists\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill: WoodSolutions notes Merbau tends to split unless pre-bored. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReeded reverse:\u003c\/strong\u003e WoodSolutions says either face can go up. Reeds add grip across the board but hold moisture, so keep a reeded-up deck clean in damp spots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTannin:\u003c\/strong\u003e Merbau can bleed tannin and gum that stains concrete, paving and brickwork. Seal all faces and cut ends, and to oil new boards straight away, draw the tannin out first with \u003ca href=\"\/products\/intergrain-ultraprep-tannin-oil-remover\"\u003eIntergrain UltraPrep Tannin \u0026amp; Oil Remover\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompare every size, length and price in our \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cul data-start=\"0\" data-end=\"391\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1u2pthh\" data-start=\"0\" data-end=\"26\"\u003eKiln-Dried for Stability\u003c\/li\u003e\n\u003cli data-section-id=\"11okx0v\" data-start=\"27\" data-end=\"52\"\u003eDressed All Round (DAR)\u003c\/li\u003e\n\u003cli data-section-id=\"16z0jv2\" data-start=\"53\" data-end=\"76\"\u003eReady to Oil or Stain\u003c\/li\u003e\n\u003cli data-section-id=\"abekej\" data-start=\"77\" data-end=\"127\"\u003eSuitable for Decking, Fencing, Screening \u0026amp; Gates\u003c\/li\u003e\n\u003cli data-section-id=\"1l1unmh\" data-start=\"128\" data-end=\"151\"\u003eStandard and Better grade hardwood\u003c\/li\u003e\n\u003cli data-section-id=\"gylvfx\" data-start=\"152\" data-end=\"187\"\u003eClass 1 Durability (Above Ground)\u003c\/li\u003e\n\u003cli data-section-id=\"glvjgc\" data-start=\"221\" data-end=\"265\"\u003eSuitable for Bushfire Prone Areas (BAL-29)\u003c\/li\u003e\n\u003cli data-section-id=\"11z8419\" data-start=\"266\" data-end=\"312\"\u003eComplies with \u003cstrong data-start=\"282\" data-end=\"312\"\u003eAustralian Standard AS3959\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9yli55\" data-start=\"313\" data-end=\"361\"\u003eAvailable in random lengths from \u003cstrong data-start=\"345\" data-end=\"361\"\u003e1.8m to 5.7m\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zu4u6j\" data-start=\"362\" data-end=\"391\" data-is-last-node=\"\"\u003eNaturally Termite Resistant\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"Default Title","offer_id":68913426956322,"sku":"MB.D.140-1-2","price":10.45,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/Merbau140x19_Random.png?v=1792367607"},{"product_id":"silvertop-ash-timber-decking","title":"Silvertop Ash Decking","description":"\u003cp\u003eSilvertop Ash decking in 86 × 19 mm and 135 × 19 mm: a pale Australian hardwood with Janka hardness 9.7 kN and Class 2 durability above ground, rated for bushfire decking up to BAL-19 at this 19 mm thickness.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 86 × 19 mm and 135 × 19 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Silvertop Ash (\u003cem\u003eEucalyptus sieberi\u003c\/em\u003e), grown in NSW, eastern Victoria and north-east Tasmania; pale brown, sometimes with a pink tinge; about 820–850 kg\/m³\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 2 above ground, which the Queensland Government rates at 15–40 years’ expected life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTermites:\u003c\/strong\u003e the Queensland Government lists Silvertop Ash heartwood as not termite resistant, so keep the subframe termite-protected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement:\u003c\/strong\u003e it has the highest shrinkage of our decking species, so keep to the recommended gaps and seal every face\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e our 19 mm Silvertop Ash is rated for decking up to BAL-19; BAL-29 needs a thicker 22 mm board. For BAL-29 in 19 mm, choose Spotted Gum, Blackbutt or Merbau\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 3–4 mm between 86 mm boards and 4–5 mm between 135 mm boards at installation (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e a 20 m² deck needs about 140 lineal metres of 135 mm board or about 225 lineal metres of 86 mm, plus about 10% for offcuts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill this dense hardwood. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSilvertop Ash decking: sizes, lengths and prices\u003c\/h2\u003e\n\u003ctable class=\"ght-sizes\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLengths\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eAvailability\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e135 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003e$17.50 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e86 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003e$8.95 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSold in random lengths, cut to suit. Prices are our website prices on 14 October 2026, per lineal metre; a 20 m² deck needs about 140 lineal metres of 135 mm board or 225 of 86 mm, plus 10% for cuts.\u003c\/p\u003e\n\u003ch2\u003eWhat Silvertop Ash decking is like\u003c\/h2\u003e\n\u003cp\u003eSilvertop Ash, \u003cem\u003eEucalyptus sieberi\u003c\/em\u003e, is cut in eastern Victoria, southern NSW and north-east Tasmania, and is the lightest board in our range at about 850 kg\/m³. It is pale brown, sometimes with a pink tinge, and straight-grained, so it reads as a pale, even deck. WoodSolutions puts its seasoned hardness at 9.7 kN, above Blackbutt and Merbau.\u003c\/p\u003e\n\u003cp\u003eIts weak points are durability and movement. The Queensland Government tables rate the heartwood Class 2 above ground, the lowest in our decking range, and not termite resistant, and it has the highest shrinkage of our decking species, so it needs its gaps and a sealed back face. Priced right, it is a good deck for a dry, well-ventilated spot.\u003c\/p\u003e\n\u003ch2\u003eWhere it suits\u003c\/h2\u003e\n\u003cp\u003eUse it for a raised, open deck that dries quickly and where you want a pale timber at a lower price than Blackbutt. Keep it off the ground, out of permanent shade, and away from garden beds. Bushfire: our 19 mm Silvertop Ash is rated for decking up to BAL-19; BAL-29 needs a 22 mm board, or Spotted Gum, Blackbutt or Merbau in 19 mm.\u003c\/p\u003e\n\u003ch2\u003eFixing and finishing\u003c\/h2\u003e\n\u003cp\u003ePre-drill, two screws per board per joist, 450 mm joist centres, and keep the full 4–5 mm gap because of the shrinkage. Oil all faces before laying, including the back and ends, and recoat each spring. \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK Extreme CD50\u003c\/a\u003e; screws in \u003ca href=\"\/collections\/decking-accessories\"\u003edecking accessories\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThe same timber for other jobs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/blackbutt-timber-decking\"\u003eBlackbutt decking\u003c\/a\u003e – the other pale board, Class 1 and BAL-29\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/timber-decking\"\u003eHardwood decking\u003c\/a\u003e – all six species side by side\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompare the species\u003c\/h2\u003e\n\u003cp\u003eOur \u003ca href=\"\/blogs\/guides\/decking-timber-comparison-melbourne\"\u003edecking timber comparison\u003c\/a\u003e puts hardness, durability, bushfire rating and price per metre for all six hardwoods on one page; \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking\u003c\/a\u003e is the budget alternative.\u003c\/p\u003e\n\u003ch2\u003eQuestions we get asked\u003c\/h2\u003e\n\u003ch3\u003eHow much does Silvertop Ash decking cost?\u003c\/h3\u003e\n\u003cp\u003eOn our website on 14 October 2026, 86 × 19 mm is $8.95 per lineal metre and 135 × 19 mm $17.50 per lineal metre.\u003c\/p\u003e\n\u003ch3\u003eIs Silvertop Ash durable?\u003c\/h3\u003e\n\u003cp\u003eClass 2 above ground in the Queensland Government tables, a class below Spotted Gum, Blackbutt and Merbau, and the heartwood is not termite resistant. It lasts well on a raised deck that dries out; it is the wrong board for a damp, shaded one.\u003c\/p\u003e\n\u003ch3\u003eIs it BAL rated?\u003c\/h3\u003e\n\u003cp\u003eOur 19 mm boards are rated for decking up to BAL-19. BAL-29 needs 22 mm Silvertop Ash or one of the listed species in 19 mm.\u003c\/p\u003e\n\u003ch3\u003eWhy does it move more than other decking?\u003c\/h3\u003e\n\u003cp\u003eIts shrinkage figures are the highest of our decking timbers (WoodSolutions: 10.6% tangential), so it gains and loses more width with the seasons. The standard gaps allow for it.\u003c\/p\u003e\n\u003ch2\u003ePickup and delivery\u003c\/h2\u003e\n\u003cp\u003eStocked at 170 Settlement Road, Thomastown, Mon–Fri 7 am–4:30 pm and Sat 9 am–1 pm. We pack and load it for you, or deliver across Melbourne and regional Victoria; delivery is quoted with the order. Call (03) 9465 9875 with your sizes and we will work out the lineal metres and the price.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"135 x 19mm","offer_id":68913496621090,"sku":"ST.D.135","price":17.5,"currency_code":"AUD","in_stock":true},{"title":"86x 19mm","offer_id":68913496653858,"sku":"S.TOP86","price":8.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/Silvertop-wide-Photoroom.jpg?v=1792367681"},{"product_id":"iron-bark-timber-decking","title":"Iron Bark Decking","description":"\u003cp\u003eGrey ironbark decking in 86 × 19 mm and 135 × 19 mm: one of the hardest Australian hardwoods, with Janka hardness 16 kN, Class 1 durability both above ground and in-ground, and rated for bushfire decking up to BAL-19.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 86 × 19 mm and 135 × 19 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e grey ironbark (\u003cem\u003eEucalyptus paniculata\u003c\/em\u003e and \u003cem\u003eE. drepanophylla\u003c\/em\u003e), grown in NSW and Queensland; reddish-brown to dark brown; about 1105–1120 kg\/m³, the densest timber in our decking range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; Class 1 in-ground too; the heartwood is termite resistant and the sapwood isn’t susceptible to lyctid borer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e qualifies under AS 3959’s high-density rule for BAL-12.5 and BAL-19, but it is not on the bushfire-resisting timber list, so it can’t be used for decking at BAL-29. For BAL-29, choose Spotted Gum, Blackbutt or Merbau\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 3–4 mm between 86 mm boards and 4–5 mm between 135 mm boards at installation (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e a 20 m² deck needs about 140 lineal metres of 135 mm board or about 225 lineal metres of 86 mm, plus about 10% for offcuts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill this dense hardwood. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGrey ironbark decking: sizes, lengths and prices\u003c\/h2\u003e\n\u003ctable class=\"ght-sizes\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLengths\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eAvailability\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e135 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003e$15.90 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e86 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003e$10.62 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSold in random lengths, cut to suit. Prices are our website prices on 14 October 2026, per lineal metre; a 20 m² deck needs about 140 lineal metres of 135 mm board or 225 of 86 mm, plus 10% for cuts.\u003c\/p\u003e\n\u003ch2\u003eWhat Grey ironbark decking is like\u003c\/h2\u003e\n\u003cp\u003eGrey ironbark, mainly \u003cem\u003eEucalyptus paniculata\u003c\/em\u003e with \u003cem\u003eE. drepanophylla\u003c\/em\u003e and \u003cem\u003eE. siderophloia\u003c\/em\u003e, is the heaviest timber in our decking range at about 1,106 kg\/m³ seasoned, and the hardest: WoodSolutions gives a seasoned hardness of 16 kN, roughly double Merbau. The colour is light grey to light chocolate with darker red and brown boards mixed through, and the grain is interlocked and dull rather than figured.\u003c\/p\u003e\n\u003cp\u003eDurability is Class 1 both above ground and in the ground, which is why the same timber is sold as posts and bridge timber. The heartwood is termite resistant and the sapwood is not susceptible to lyctid borer, so there is little that needs to be cut out of a pack.\u003c\/p\u003e\n\u003ch2\u003eWhere it suits\u003c\/h2\u003e\n\u003cp\u003eThis is the board for decks that get punished: commercial walkways, pool surrounds, shaded decks that stay damp, anywhere a dropped tool or a dragged chair would mark a softer timber. The limit is bushfire: grey ironbark qualifies under the AS 3959 density rule for BAL-12.5 and BAL-19 but is not on the bushfire-resisting timber list, so it cannot be used for decking at BAL-29. For BAL-29 choose Spotted Gum, Blackbutt or Merbau.\u003c\/p\u003e\n\u003ch2\u003eFixing and finishing\u003c\/h2\u003e\n\u003cp\u003ePre-drill everything and expect to replace drill bits; at 16 kN the timber blunts tools quickly. Two stainless or Class 3 galvanised screws per board per joist, 450 mm joist centres, 4–5 mm gaps on the wide board. Being so dense it takes oil slowly, so apply thin coats of \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK Extreme CD50\u003c\/a\u003e or \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e and wipe off the excess. Screws are in \u003ca href=\"\/collections\/decking-accessories\"\u003edecking accessories\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThe same timber for other jobs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/grey-ironbark-timber-flooring\"\u003eGrey Ironbark solid floorboards\u003c\/a\u003e – 130 × 14 mm Feature grade in stock, other sizes ordered in\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/iron-bark-timber-cladding\"\u003eIronbark cladding\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/timber-decking\"\u003eHardwood decking\u003c\/a\u003e – all six species side by side\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompare the species\u003c\/h2\u003e\n\u003cp\u003eOur \u003ca href=\"\/blogs\/guides\/decking-timber-comparison-melbourne\"\u003edecking timber comparison\u003c\/a\u003e puts hardness, durability, bushfire rating and price per metre for all six hardwoods on one page; \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking\u003c\/a\u003e is the budget alternative.\u003c\/p\u003e\n\u003ch2\u003eQuestions we get asked\u003c\/h2\u003e\n\u003ch3\u003eHow much does ironbark decking cost?\u003c\/h3\u003e\n\u003cp\u003eOn our website on 14 October 2026, 86 × 19 mm is $10.62 per lineal metre and 135 × 19 mm $15.90 per lineal metre, the same price per metre as Grey Box and below Blackbutt in the wide board.\u003c\/p\u003e\n\u003ch3\u003eIs ironbark the hardest decking timber?\u003c\/h3\u003e\n\u003cp\u003eOf the species we stock, yes: 16 kN seasoned hardness against 15 for Grey Box, 10.1 for Spotted Gum and 8.5 for Merbau.\u003c\/p\u003e\n\u003ch3\u003eCan I use it at BAL-29?\u003c\/h3\u003e\n\u003cp\u003eNo. It is not on the AS 3959 bushfire-resisting timber list, so it stops at BAL-19 for decking, which it meets on density.\u003c\/p\u003e\n\u003ch3\u003eIs it red or grey?\u003c\/h3\u003e\n\u003cp\u003eBoth come through in a pack: light grey and light chocolate boards with some darker red-brown ones. Oiled, the mix evens out.\u003c\/p\u003e\n\u003ch3\u003eWhy is it harder to lay?\u003c\/h3\u003e\n\u003cp\u003eWeight and density. A 5.4 m 135 × 19 board is about 15 kg, every screw needs a pilot hole, and saw blades dull faster.\u003c\/p\u003e\n\u003ch2\u003ePickup and delivery\u003c\/h2\u003e\n\u003cp\u003eStocked at 170 Settlement Road, Thomastown, Mon–Fri 7 am–4:30 pm and Sat 9 am–1 pm. We pack and load it for you, or deliver across Melbourne and regional Victoria; delivery is quoted with the order. Call (03) 9465 9875 with your sizes and we will work out the lineal metres and the price.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"135 x 19mm","offer_id":68913571004450,"sku":"GHT-9802","price":15.9,"currency_code":"AUD","in_stock":true},{"title":"86 x 19mm","offer_id":68913571037218,"sku":"GHT-9801","price":10.62,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/Ironbark.jpg?v=1792367718"},{"product_id":"spotted-gum-timber-decking","title":"Spotted Gum Timber Decking","description":"\u003cp\u003eSpotted Gum decking in 86 × 19 mm and 135 × 19 mm: a dense Australian hardwood with Class 1 durability above ground, Janka hardness 10.1 kN and a place on the AS 3959 bushfire-resisting timber list, so it can be used for decking up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes and lengths:\u003c\/strong\u003e 86 × 19 mm and 135 × 19 mm in random lengths, plus 135 × 19 mm long lengths of 5.7–6.0 m for fewer joins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Spotted Gum (\u003cem\u003eCorymbia maculata\u003c\/em\u003e, \u003cem\u003eC. citriodora\u003c\/em\u003e and \u003cem\u003eC. henrii\u003c\/em\u003e), grown from north-east Victoria to Queensland; light brown to dark red-brown; about 990–1010 kg\/m³\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; Class 2 in-ground; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTannin:\u003c\/strong\u003e WoodSolutions says Spotted Gum is less prone to tannin bleed than other species\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 3–4 mm between 86 mm boards and 4–5 mm between 135 mm boards at installation (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e a 20 m² deck needs about 140 lineal metres of 135 mm board or about 225 lineal metres of 86 mm, plus about 10% for offcuts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill this dense hardwood. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsing Spotted Gum inside as well? See \u003ca href=\"\/collections\/spotted-gum-flooring\"\u003eSpotted Gum flooring\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eSpotted Gum decking: sizes, lengths and prices\u003c\/h2\u003e\n\u003ctable class=\"ght-sizes\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLengths\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eAvailability\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e135 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eLong Lengths (5.7-6.0m)\u003c\/td\u003e\n\u003ctd\u003e$140.36 per board\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e135 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom Length\u003c\/td\u003e\n\u003ctd\u003e$16.50 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e86 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom Length\u003c\/td\u003e\n\u003ctd\u003e$9.60 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eRandom lengths are the usual way to buy it and the cheapest per metre: packs run from about 1.8 m up to 5.4 m and you cut to suit. The 135 × 19 mm long-length boards are 5.7–6.0 m pieces for decks where you want a run with no joins. Prices are our website prices on 14 October 2026 and are per lineal metre unless marked per board; a 20 m² deck needs about 140 lineal metres of 135 mm board or 225 of 86 mm, plus 10% for cuts.\u003c\/p\u003e\n\u003ch2\u003eWhat Spotted Gum decking is like\u003c\/h2\u003e\n\u003cp\u003eSpotted Gum is the hardwood most Melbourne builders reach for when a customer wants an Australian species rather than Merbau. It is a group of three closely related trees, \u003cem\u003eCorymbia maculata\u003c\/em\u003e, \u003cem\u003eC. citriodora\u003c\/em\u003e and \u003cem\u003eC. henryi\u003c\/em\u003e, cut from Queensland down to the NSW south coast. The boards run from pale brown to a dark red-brown, often in the same pack, with a wavy grain that shows the figure once it is oiled. At about 990 kg\/m³ seasoned it is heavy; a 5.4 m length of 135 × 19 weighs around 14 kg.\u003c\/p\u003e\n\u003cp\u003eWoodSolutions puts its seasoned hardness at 10.1 kN, above Blackbutt (8.9) and Merbau (8.5), and rates the heartwood durability Class 1 above ground and Class 2 in the ground, with natural termite resistance. It is also the lowest-bleed hardwood we sell: WoodSolutions describes it as less prone to tannin bleed than other species, so it is the safer pick next to pale paving or render. The sapwood can be attacked by lyctid borer, which is why decking is cut from heartwood.\u003c\/p\u003e\n\u003ch2\u003eWhere it suits\u003c\/h2\u003e\n\u003cp\u003eSpotted Gum is on the AS 3959 list of bushfire-resisting timbers, so at 19 mm it can be used for decking up to BAL-29 without any treatment; BAL-40 and Flame Zone need a tested system. That, the hardness and the low bleed make it the all-round choice: house decks, pool surrounds, steps and commercial outdoor areas. The one place we would steer you elsewhere is a deck that stays wet and shaded most of the year, where grey ironbark or Grey Box, both Class 1 in the ground as well, give more margin.\u003c\/p\u003e\n\u003ch2\u003eFixing and finishing\u003c\/h2\u003e\n\u003cp\u003ePre-drill every fixing: at this density screws will snap or split the board end otherwise. Use two stainless or Class 3 galvanised screws per board at each joist, 450 mm joist centres, and a 4–5 mm gap on the 135 mm board (3–4 mm on 86 mm). Coat all faces and cut ends before laying, then once or twice a year. The \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK Extreme CD50\u003c\/a\u003e and \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e on our shelves both suit it; left bare it silvers within a year. Screws, joist tape and stirrups are in \u003ca href=\"\/collections\/decking-accessories\"\u003edecking accessories\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThe same timber for other jobs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/spotted-gum-flooring\"\u003eSpotted Gum flooring\u003c\/a\u003e – solid, engineered, hybrid and laminate floors in the same timber\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/spotted-gum-timber-flooring\"\u003eNSW Spotted Gum solid floorboards\u003c\/a\u003e – 83 × 14, 130 × 14 and 130 × 19 mm\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/qld-spotted-gum-timber-flooring\"\u003eQLD Spotted Gum solid floorboards\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/timber-decking\"\u003eHardwood decking\u003c\/a\u003e – all six species side by side\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompare the species\u003c\/h2\u003e\n\u003cp\u003eOur \u003ca href=\"\/blogs\/guides\/decking-timber-comparison-melbourne\"\u003edecking timber comparison\u003c\/a\u003e puts hardness, durability, bushfire rating and price per metre for all six hardwoods on one page; \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking\u003c\/a\u003e is the budget alternative.\u003c\/p\u003e\n\u003ch2\u003eQuestions we get asked\u003c\/h2\u003e\n\u003ch3\u003eHow much does Spotted Gum decking cost?\u003c\/h3\u003e\n\u003cp\u003eOn our website on 14 October 2026, 86 × 19 mm random lengths are $9.60 per lineal metre and 135 × 19 mm $16.50 per lineal metre, so a 20 m² deck is roughly $2,400–$2,550 in boards including 10% for cuts, before fixings and oil.\u003c\/p\u003e\n\u003ch3\u003eIs Spotted Gum better than Merbau for decking?\u003c\/h3\u003e\n\u003cp\u003eIt is harder (10.1 kN against 8.5), bleeds far less tannin, and is Australian-grown; Merbau is cheaper per metre and comes in more widths. Both are Class 1 above ground and both are BAL-29 timbers.\u003c\/p\u003e\n\u003ch3\u003eCan I use Spotted Gum decking in a BAL-29 area?\u003c\/h3\u003e\n\u003cp\u003eYes. It is on the bushfire-resisting timber list in AS 3959, so 19 mm boards can be used for decking up to BAL-29. BAL-40 and Flame Zone need a tested deck system.\u003c\/p\u003e\n\u003ch3\u003eWhat colour does it go?\u003c\/h3\u003e\n\u003cp\u003eOiled, the boards keep their light-brown to red-brown range and the grain shows. Left uncoated it weathers to silver-grey in about a year and can be brought back with a deck cleaner and oil.\u003c\/p\u003e\n\u003ch3\u003eDoes it need pre-drilling?\u003c\/h3\u003e\n\u003cp\u003eYes, every screw. It is dense enough to shear screws and split board ends if you drive straight in.\u003c\/p\u003e\n\u003ch2\u003ePickup and delivery\u003c\/h2\u003e\n\u003cp\u003eStocked at 170 Settlement Road, Thomastown, Mon–Fri 7 am–4:30 pm and Sat 9 am–1 pm. We pack and load it for you, or deliver across Melbourne and regional Victoria; delivery is quoted with the order. Call (03) 9465 9875 with your sizes and we will work out the lineal metres and the price.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"Random Length \/ 135 x 19mm","offer_id":68913643257890,"sku":"GHT-9972","price":16.5,"currency_code":"AUD","in_stock":true},{"title":"Random Length \/ 86 x 19mm","offer_id":68913643290658,"sku":"GHT-9971","price":9.6,"currency_code":"AUD","in_stock":true},{"title":"Long Lengths (5.7-6.0m) \/ 135 x 19mm","offer_id":68913643323426,"sku":"GHT-9970","price":140.36,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/spotted-gum-135-19-img.jpg?v=1792367796"},{"product_id":"blackbutt-timber-decking","title":"Blackbutt Decking","description":"\u003cp\u003eBlackbutt decking in 86 × 19 mm and 135 × 19 mm: a pale, golden Australian hardwood with Class 1 durability above ground, Janka hardness 8.9 kN and a place on the AS 3959 bushfire-resisting timber list, so it can be used for decking up to BAL-29.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 86 × 19 mm and 135 × 19 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Australian Blackbutt (\u003cem\u003eEucalyptus pilularis\u003c\/em\u003e), grown from Bega in NSW to Maryborough in Queensland; golden yellow to pale brown; about 900–930 kg\/m³\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; Class 2 in-ground; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e on the AS 3959 list of bushfire-resisting timbers, so it can be used for decking up to BAL-29 (BAL-40 and Flame Zone need tested systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Blackbutt:\u003c\/strong\u003e some suppliers sell other species under the name “Blackbutt”, which can differ in colour, durability and bushfire rating. Ours is Australian Blackbutt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 3–4 mm between 86 mm boards and 4–5 mm between 135 mm boards at installation (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e a 20 m² deck needs about 140 lineal metres of 135 mm board or about 225 lineal metres of 86 mm, plus about 10% for offcuts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill this dense hardwood. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBlackbutt decking: sizes, lengths and prices\u003c\/h2\u003e\n\u003ctable class=\"ght-sizes\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLengths\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eAvailability\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e135 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003e$19.90 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e86 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003e$10.36 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth widths are sold in random lengths, usually 1.8–5.4 m, cut to suit. Prices are our website prices on 14 October 2026, per lineal metre; a 20 m² deck needs about 140 lineal metres of 135 mm board or 225 of 86 mm, plus 10% for cuts.\u003c\/p\u003e\n\u003ch2\u003eWhat Blackbutt decking is like\u003c\/h2\u003e\n\u003cp\u003eBlackbutt, \u003cem\u003eEucalyptus pilularis\u003c\/em\u003e, grows along the coast from Bega in NSW to Maryborough in Queensland and is the paler of the Australian decking hardwoods: golden yellow to pale brown, with a straight grain and, now and then, a slight pink cast. It is about 900 kg\/m³ seasoned, with a WoodSolutions seasoned hardness of 8.9 kN, heartwood that is naturally termite resistant, and sapwood that lyctid borer does not attack.\u003c\/p\u003e\n\u003cp\u003eIts durability is Class 1 above ground, which the Queensland Government tables put at more than 40 years, and Class 2 in the ground. Be aware that some yards sell other species under the name \"Blackbutt\"; ours is Australian \u003cem\u003eE. pilularis\u003c\/em\u003e, which is what the bushfire listing applies to.\u003c\/p\u003e\n\u003ch2\u003eWhere it suits\u003c\/h2\u003e\n\u003cp\u003eBlackbutt is on the AS 3959 list of bushfire-resisting timbers, so 19 mm boards can be used for decking up to BAL-29. The pale colour is the reason most people choose it: it stays cooler underfoot than the dark timbers and suits modern houses with pale render or light cladding. It bleeds more tannin than Spotted Gum in its first months, so hose it down before oiling and keep it off unsealed pale paving until it settles.\u003c\/p\u003e\n\u003ch2\u003eFixing and finishing\u003c\/h2\u003e\n\u003cp\u003ePre-drill, two screws per board per joist, 450 mm joist centres, 3–4 mm gaps on 86 mm boards and 4–5 mm on 135 mm. Coat every face and end before laying. Blackbutt takes a clear oil well and keeps its light colour better under a UV-filtered product such as \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK Extreme CD50\u003c\/a\u003e; \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e is the budget option. Screws and joist tape are in \u003ca href=\"\/collections\/decking-accessories\"\u003edecking accessories\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThe same timber for other jobs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/blackbutt-flooring\"\u003eBlackbutt flooring\u003c\/a\u003e – solid, engineered, hybrid and laminate floors\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/blackbutt-timber-flooring\"\u003eBlackbutt solid floorboards\u003c\/a\u003e – 83 × 14, 130 × 14 and 130 × 19 mm, Select and Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/blackbutt-engineered-flooring\"\u003eBlackbutt engineered flooring\u003c\/a\u003e – for slabs and underfloor heating\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/blackbutt-timber-cladding\"\u003eBlackbutt cladding\u003c\/a\u003e – the same timber on the wall\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/timber-decking\"\u003eHardwood decking\u003c\/a\u003e – all six species side by side\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompare the species\u003c\/h2\u003e\n\u003cp\u003eOur \u003ca href=\"\/blogs\/guides\/decking-timber-comparison-melbourne\"\u003edecking timber comparison\u003c\/a\u003e puts hardness, durability, bushfire rating and price per metre for all six hardwoods on one page; \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking\u003c\/a\u003e is the budget alternative.\u003c\/p\u003e\n\u003ch2\u003eQuestions we get asked\u003c\/h2\u003e\n\u003ch3\u003eHow much does Blackbutt decking cost?\u003c\/h3\u003e\n\u003cp\u003eOn our website on 14 October 2026, 86 × 19 mm is $10.36 per lineal metre and 135 × 19 mm $19.90 per lineal metre.\u003c\/p\u003e\n\u003ch3\u003eIs Blackbutt decking BAL-29 rated?\u003c\/h3\u003e\n\u003cp\u003eYes. Australian Blackbutt is on the AS 3959 bushfire-resisting timber list, so 19 mm decking can be used up to BAL-29.\u003c\/p\u003e\n\u003ch3\u003eBlackbutt or Spotted Gum?\u003c\/h3\u003e\n\u003cp\u003eBlackbutt is paler and cooler underfoot; Spotted Gum is harder (10.1 kN against 8.9), bleeds less and is cheaper per metre in the wide board here. Both are Class 1 above ground.\u003c\/p\u003e\n\u003ch3\u003eDoes Blackbutt bleed?\u003c\/h3\u003e\n\u003cp\u003eSome tannin in the first wet weeks. Wash the deck down before the first oil and keep run-off away from pale, unsealed surfaces until it stops.\u003c\/p\u003e\n\u003ch3\u003eWill it stay that pale colour?\u003c\/h3\u003e\n\u003cp\u003eUnder a UV-filtered oil, mostly; under a plain oil it goes a deeper honey; left bare it silvers.\u003c\/p\u003e\n\u003ch2\u003ePickup and delivery\u003c\/h2\u003e\n\u003cp\u003eStocked at 170 Settlement Road, Thomastown, Mon–Fri 7 am–4:30 pm and Sat 9 am–1 pm. We pack and load it for you, or deliver across Melbourne and regional Victoria; delivery is quoted with the order. Call (03) 9465 9875 with your sizes and we will work out the lineal metres and the price.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"135 x 19mm","offer_id":68913643388962,"sku":"GHT-9960","price":19.9,"currency_code":"AUD","in_stock":true},{"title":"86 x 19mm","offer_id":68913643421730,"sku":"GHT-9959","price":10.36,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/blackbutt-135-19-img.jpg?v=1792367797"},{"product_id":"greybox-timber-decking","title":"Greybox Decking","description":"\u003cp\u003eGrey Box decking in 86 × 19 mm and 135 × 19 mm: one of the hardest, most durable Australian decking timbers, with Janka hardness 15 kN and Class 1 durability both above ground and in-ground, rated for bushfire decking up to BAL-19.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 86 × 19 mm and 135 × 19 mm in random lengths\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber:\u003c\/strong\u003e Grey Box (\u003cem\u003eEucalyptus moluccana\u003c\/em\u003e), grown from Jervis Bay in NSW to the Atherton Tableland; usually pale brown, sometimes yellowish; about 1105 kg\/m³\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Class 1 above ground, which the Queensland Government rates at more than 40 years’ expected life; Class 1 in-ground too; the heartwood is termite resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushfire:\u003c\/strong\u003e qualifies under AS 3959’s high-density rule for BAL-12.5 and BAL-19, but it is not on the bushfire-resisting timber list, so it can’t be used for decking at BAL-29. For BAL-29, choose Spotted Gum, Blackbutt or Merbau\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e 450 mm centres, as WoodSolutions recommends for decking; its deck design guide allows up to 500 mm for 19 mm hardwood, or 350 mm if the boards run at 45°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaps:\u003c\/strong\u003e 3–4 mm between 86 mm boards and 4–5 mm between 135 mm boards at installation (WoodSolutions deck design guide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow much for a deck:\u003c\/strong\u003e a 20 m² deck needs about 140 lineal metres of 135 mm board or about 225 lineal metres of 86 mm, plus about 10% for offcuts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow decks:\u003c\/strong\u003e under 400 mm off the ground, WoodSolutions suggests 5–6 mm gaps and at least 40 mm between the deck and the house, for airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e two fixings per board at every joist, at least 12 mm from edges and ends. Pre-drill this dense hardwood. Use stainless steel within 1 km of the coast or 1 m of a pool. See our \u003ca href=\"\/collections\/decking-accessories\"\u003edecking screws\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing:\u003c\/strong\u003e coat every face and cut end, ideally before fixing, then recoat at least once a year or as the oil maker directs (WoodSolutions); left bare, it weathers to silver-grey. Oils we stock: \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK CD50\u003c\/a\u003e, \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e or \u003ca href=\"\/products\/sceneys-timber-decking-oil\"\u003eSceney’s Timber Decking Oil\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAt Greenhill:\u003c\/strong\u003e stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. Compare species on our \u003ca href=\"\/collections\/timber-decking\"\u003ehardwood decking\u003c\/a\u003e page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGrey Box decking: sizes, lengths and prices\u003c\/h2\u003e\n\u003ctable class=\"ght-sizes\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eLengths\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eAvailability\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e135 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003e$15.90 per lineal metre\u003c\/td\u003e\n\u003ctd\u003ein stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e86 × 19 mm\u003c\/td\u003e\n\u003ctd\u003eRandom length\u003c\/td\u003e\n\u003ctd\u003ecall for price\u003c\/td\u003e\n\u003ctd\u003eordered in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSold in random lengths, cut to suit. The 86 × 19 mm board is ordered in; call for a price. Prices are our website prices on 14 October 2026, per lineal metre; a 20 m² deck needs about 140 lineal metres of 135 mm board, plus 10% for cuts.\u003c\/p\u003e\n\u003ch2\u003eWhat Grey Box decking is like\u003c\/h2\u003e\n\u003cp\u003eGrey Box, \u003cem\u003eEucalyptus moluccana\u003c\/em\u003e, grows from Jervis Bay in NSW up to the Atherton Tableland and is one of the hardest Australian decking timbers: WoodSolutions gives a seasoned hardness of 15 kN at about 1,105 kg\/m³, with durability Class 1 above ground and in the ground and a termite-resistant heartwood. The boards are pale yellowish-brown to light brown, plainer and more even than Spotted Gum, with a fine interlocked grain.\u003c\/p\u003e\n\u003cp\u003eThe sapwood is susceptible to lyctid borer, so decking is cut from heartwood. It moves less than Silvertop Ash and Blackbutt once seasoned, which helps a wide deck stay flat.\u003c\/p\u003e\n\u003ch2\u003eWhere it suits\u003c\/h2\u003e\n\u003cp\u003eChoose Grey Box where ironbark would do the job but you want a lighter colour: pool decks, commercial areas and decks that stay damp. Like ironbark it qualifies for BAL-12.5 and BAL-19 under the AS 3959 density rule but is not on the bushfire-resisting timber list, so it cannot be used for decking at BAL-29; for that, choose Spotted Gum, Blackbutt or Merbau.\u003c\/p\u003e\n\u003ch2\u003eFixing and finishing\u003c\/h2\u003e\n\u003cp\u003ePre-drill, two stainless or Class 3 galvanised screws per board per joist, 450 mm joist centres, 4–5 mm gaps on the 135 mm board. It takes oil slowly, so brush thin coats of \u003ca href=\"\/products\/cutek-oil-extreme-cd50\"\u003eCUTEK Extreme CD50\u003c\/a\u003e or \u003ca href=\"\/products\/intergrain-universal-timber-oil\"\u003eIntergrain Universal Timber Oil\u003c\/a\u003e and wipe off what does not soak in. Screws and joist tape are in \u003ca href=\"\/collections\/decking-accessories\"\u003edecking accessories\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThe same timber for other jobs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/iron-bark-timber-decking\"\u003eGrey ironbark decking\u003c\/a\u003e – the other 15–16 kN board, darker in colour\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/timber-decking\"\u003eHardwood decking\u003c\/a\u003e – all six species side by side\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompare the species\u003c\/h2\u003e\n\u003cp\u003eOur \u003ca href=\"\/blogs\/guides\/decking-timber-comparison-melbourne\"\u003edecking timber comparison\u003c\/a\u003e puts hardness, durability, bushfire rating and price per metre for all six hardwoods on one page; \u003ca href=\"\/collections\/merbau\"\u003eMerbau decking\u003c\/a\u003e is the budget alternative.\u003c\/p\u003e\n\u003ch2\u003eQuestions we get asked\u003c\/h2\u003e\n\u003ch3\u003eHow much does Grey Box decking cost?\u003c\/h3\u003e\n\u003cp\u003eOn our website on 14 October 2026, 135 × 19 mm is $15.90 per lineal metre. The 86 × 19 mm board is ordered in; call for a price.\u003c\/p\u003e\n\u003ch3\u003eGrey Box or ironbark?\u003c\/h3\u003e\n\u003cp\u003eAlmost the same hardness and durability. Grey Box is paler and more even in colour; ironbark runs grey to chocolate with red boards. Neither can be used at BAL-29.\u003c\/p\u003e\n\u003ch3\u003eIs it termite resistant?\u003c\/h3\u003e\n\u003cp\u003eThe heartwood is, in the WoodSolutions and Queensland Government tables. Treat the subframe anyway if it is in contact with the ground.\u003c\/p\u003e\n\u003ch3\u003eDoes it bleed?\u003c\/h3\u003e\n\u003cp\u003eLess than Merbau and Blackbutt. Wash it down before the first oil as with any hardwood.\u003c\/p\u003e\n\u003ch2\u003ePickup and delivery\u003c\/h2\u003e\n\u003cp\u003eStocked at 170 Settlement Road, Thomastown, Mon–Fri 7 am–4:30 pm and Sat 9 am–1 pm. We pack and load it for you, or deliver across Melbourne and regional Victoria; delivery is quoted with the order. Call (03) 9465 9875 with your sizes and we will work out the lineal metres and the price.\u003c\/p\u003e\n","brand":"Greenhill Timbers","offers":[{"title":"135 x 19mm","offer_id":68913649549346,"sku":"GHT-9773","price":15.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/greybox-135-19-img.jpg?v=1792367798"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/collections\/Merbau-Timber-Decking_2509975093.webp?v=1792373177","url":"https:\/\/greenhilltimbers.com.au\/collections\/timber-decking.oembed","provider":"Greenhill Timbers","version":"1.0","type":"link"}