Iron Bark Cladding

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SKU: GHT-1773 Categories: Cladding / Screening, External Cladding Melbourne Brand: Greenhill Timbers Common Name: Ironbark Botanical Name: Eucalyptus paniculata Size (mm): 90 x 19, 135 x 19, 190 x 19 Appearance: Moderately coarse and even, Straight grain, Occasionally interlocked Colour: Light grey, Light chocolate, Darker reds and browns Grades: Standard & Better Product Brand: Green Hill Timbers Janka Rating: 14.0

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Grey ironbark cladding: one of the hardest and most durable Australian hardwoods, in 50, 70 and 120 mm boards, in VJ, shadow line or VJ shadow line profiles, with a dressed or sawn brushed face.

Sizes and profiles: 50 mm, 70 mm and 120 mm boards in VJ, shadow line or VJ shadow line, each with a dressed or sawn brushed face
Timber: grey ironbark (Eucalyptus paniculata, E. drepanophylla), reddish-brown to dark brown, about 1105–1120 kg/m³ and Janka 16 kN
Durability: Class 1 above ground and Class 1 in-ground; the heartwood is termite resistant and the sapwood isn’t susceptible to lyctid borer
Bushfire: grey ironbark meets AS 3959’s high-density rule to BAL-19; for a BAL-29 wall use Blackbutt
Fixing: pre-drill this dense hardwood, and use stainless steel fixings within 1 km of the coast
Finishing: coat every face and cut end before fixing, then recoat, or leave it to weather to silver-grey
At Greenhill: stocked at 170 Settlement Road, Thomastown, with pickup or delivery across Melbourne and regional Victoria. See all our timber cladding.

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Product Description

Ironbark is very high strength and durable timber and very hard and heavy. The heartwood presents a stunning array of colours, ranging from pale grey or light chocolate to darker reds and brown

It is generally even in texture and can have some attractive grain figure.

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Janka Rating

Iron Bark Cladding — Janka hardness: 14.0 kN

What Is the Janka Rating?

The Janka rating is a way to measure how hard a timber is, specifically, how much force it takes to push a small steel ball halfway into the wood. The number you get is shown in kilonewtons (kN). A higher Janka score means a harder, more durable timber. Builders and floor installers use it to work out which timbers hold up better in busy areas.

Here’s a rough guide to how some timbers sit on the scale:

Brazilian Walnut – around 16.0 kN
Spotted Gum – roughly 11.0 kN
Tasmanian Oak – about 5.5 kN
Radiata Pine – close to 3.0 kN

Keep in mind: these values can vary depending on moisture content and grain direction.

It's One Part of the Decision

Hardness is useful to know, but it’s just one factor. Janka doesn’t tell you how a timber reacts to heat or humidity, how stable it is, or how easy it is to cut and install.

Some of the hardest woods can be difficult to work with. Others, even if softer, might be more stable or forgiving on-site.

At Greenhill Timbers, we look at the whole picture, not just the numbers. All our timbers are structurally graded and covered by a 25-year guarantee. We'll help you pick something that works for your project, not just on paper.

Delivery Options

Melbourne-Wide Delivery

We carefully prepare your order and organise pick-up or delivery that suits your schedule, ensuring your satisfaction when you choose to purchase from us. If you're located in Melbourne and its surrounding areas, you can collect your order from our Thomastown Showroom at 170 Settlement Road. Otherwise, we can facilitate delivery by leveraging our strong partnerships with various sub-contractors to get you the most competitive delivery rate and suitable time frame. For more information, get in touch with us.

Why Choose Us

Get Your Timber Packed

We pack, wrap and load your products into your vehicle on-site. As a Green Hill customer, you won’t have to pack your timber or lug it into your vehicle after you’ve purchased it.

One Stop Shop

We are a one-stop shop for all your timber needs. Get dozens of types of wood, both imported and local, and the right cuts for your decking, flooring, cladding and fencing projects.

Competitive Pricing

In most cases, we can help you save hundreds or even thousands of dollars on the same materials compared to other timber suppliers.

Expert Staff

Our expert staff will assist you in finding the perfect timber to match your projects based on a relaxed chat to find what you need.

Transparent Quotes

We give you the whole picture when we quote you. So you can avoid any nasty surprises down the line.