{"product_id":"yellow-tongue-flooring","title":"STRUCTAflor Yellow Tongue 19mm Particleboard Flooring","description":"\u003cp\u003eSTRUCTAflor Yellow Tongue is 19 mm structural particleboard flooring for joists at up to 450 mm centres, in 3600 × 800 mm tongue-and-groove sheets, sold per sheet. It is the standard subfloor for a timber-framed house; the thicker Red Tongue (22 mm) and Blue Tongue (25 mm) are for 600 mm joist centres.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 19 mm — yellow tongue means 19 mm, red tongue 22 mm, blue tongue 25 mm (Borg \/ Australian Panels)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheet size:\u003c\/strong\u003e 3600 × 800 mm, tongue and groove on the long edges, square-cut ends; about 38 kg per sheet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoist spacing:\u003c\/strong\u003e up to 450 mm centres for residential floors; for 600 mm centres use 22 or 25 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow many sheets:\u003c\/strong\u003e each sheet covers 2.88 m², so a 60 m² floor takes 21 sheets plus cuts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixing:\u003c\/strong\u003e glue and screw — STRUCTAflor requires a 5 mm bead of construction adhesive on every joist, with screws preferred over nails\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather:\u003c\/strong\u003e can be exposed for up to five months during construction, then must be covered; not for permanently exposed floors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e Class 1 particleboard flooring to AS\/NZS 1860.1, made in Australia from plantation pine; ask us for the H2 termite-treated version if your site needs it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoes with:\u003c\/strong\u003e framing pine and \u003ca href=\"\/products\/joist-hangers\"\u003ejoist hangers\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. See all our \u003ca href=\"\/collections\/framing-timber\"\u003eframing timber\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch2\u003eWhat is Yellow Tongue Flooring?\u003c\/h2\u003e\n\u003cp\u003eYellow tougue flooring refers to a 19 mm-thick structural particleboard sheet, used as a subfloor over joists or bearers. It gets its name from the coloured strip along the edge, which helps builders identify sheet thickness easily during installation. These boards are designed to support general domestic and light commercial builds.\u003c\/p\u003e\n\n\u003ch3\u003eWhere It’s Used\u003c\/h3\u003e\n\u003cp\u003eThis product suits both platform flooring (where sheets are laid before walls go up) and traditional fitted flooring. Sheets have a tongue-and-groove profile, which allows them to interlock neatly and reduces movement between boards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical specs include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3600 x 800 mm sheet size\u003c\/li\u003e\n\u003cli\u003e19 mm thickness\u003c\/li\u003e\n\u003cli\u003eDesigned for 450 mm joist centres\u003c\/li\u003e\n\u003cli\u003eCan be nailed or screwed directly to framing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMoisture and On-Site Durability\u003c\/h3\u003e\n\u003cp\u003eEach board has a resin-coated surface and wax added throughout to help resist moisture. The edges are also wax sealed to help reduce moisture uptake at joins. While not waterproof, they hold up well under typical site exposure, especially when stored flat and covered.\u003c\/p\u003e\n\u003ch3\u003eOptions for Different Conditions\u003c\/h3\u003e\n\u003cp\u003eIn areas prone to termites, H2-treated variants are available (STRUCTAflor Terminator). These include a safe termite treatment that’s built into the board.\u003c\/p\u003e\n\u003cp\u003eIf thermal performance is a priority, R-flor® boards come with a reflective backing to improve insulation under suspended floors, particularly useful in cooler regions.\u003c\/p\u003e\n\u003ch3\u003eTrade Supply and Support\u003c\/h3\u003e\n\u003cp\u003eAt \u003ca href=\"\/\"\u003eGreenhill Timbers\u003c\/a\u003e, we supply yellow tongue flooring across Melbourne and beyond. If you’re not sure which variant suits your project, or you need help with quantities, we can assist. We stock standard yellow tongue along with H2 and R-flor® options, all available for delivery.\u003c\/p\u003e\n\u003cp class=\"ght-related\"\u003e\u003cstrong\u003eRelated:\u003c\/strong\u003e \u003ca href=\"\/products\/90x45-untreated-framing-mgp10\"\u003e90x45 Framing Pine MGP10 Radiata\u003c\/a\u003e, \u003ca href=\"\/products\/70x35-pine-merch-grade\"\u003e70x35 Pine Merch Grade\u003c\/a\u003e and \u003ca href=\"\/products\/70x45-pine-merch-grade\"\u003e70x45 Pine Merch Grade\u003c\/a\u003e. \u003cstrong\u003eGoes with:\u003c\/strong\u003e \u003ca href=\"\/collections\/lvl-timber\"\u003elvl timber\u003c\/a\u003e and \u003ca href=\"\/collections\/treated-pine\"\u003etreated pine\u003c\/a\u003e. \u003cstrong\u003eRange:\u003c\/strong\u003e \u003ca href=\"\/collections\/framing-timber\"\u003eframing timber\u003c\/a\u003e in \u003ca href=\"\/collections\/structural-timber\"\u003eStructural Timbers\u003c\/a\u003e. \u003cstrong\u003eBrand:\u003c\/strong\u003e \u003ca href=\"\/collections\/structaflor\"\u003eall STRUCTAflor products\u003c\/a\u003e. \u003cstrong\u003eGuides:\u003c\/strong\u003e \u003ca href=\"\/blogs\/guides\/h3-treated-pine-in-thomastown-the-2026-guide-to-durable-outdoor-timber\"\u003eH3 Treated Pine in Thomastown\u003c\/a\u003e.\u003c\/p\u003e\n","brand":"STRUCTAflor","offers":[{"title":"Default Title","offer_id":68913489838114,"sku":"GHT-6492","price":50.05,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/3981\/5970\/files\/structaflor-general-purpose-02.jpg?v=1792367672","url":"https:\/\/greenhilltimbers.com.au\/products\/yellow-tongue-flooring","provider":"Greenhill Timbers","version":"1.0","type":"link"}