Hardwood Specified and Sourced for Australia's Toughest Outdoor Conditions
Durable Hardwoods is a family-owned outdoor hardwood timber supplier in SA, with over 100 years of combined expertise. We consult first, then source the right species, grade and cut from our mill network, provenanced and delivered to your site.
What we do
We specialise in hardwoods for outdoor and high-exposure applications. Every job follows the same three steps.
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Consult and advise
We work through your project with you and help you choose the right timber for the conditions it will face.
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Source and supply
We source provenanced timber to order from our network of mills in Australia and around the world.
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Deliver to site
We arrange delivery to where you need it, when you need it, across SA, VIC, NSW and QLD.
Popular hardwoods
The six species we specify most often, with ratings from our Australian Hardwoods poster. Many other specialist hardwoods and timbers are supplied to order.
| Species | Durability class | Stress grade | BAL rating |
|---|---|---|---|
| Merbau | Class 1 | F11–F14 | BAL-29 |
| Cypress Pine | Class 1 | F7 | BAL-12.5 to BAL-19 |
| Blackbutt | Class 2–3 | F8–F14 | BAL-19 |
| Spotted Gum | Class 2 | F11–F17 | BAL-19 to BAL-29 |
| Tallowwood | Class 1 | F11–F17 | BAL-29 |
| Tasmanian Oak | Class 3 | F7–F17 | BAL-12.5 |
* Cypress Pine is a softwood, but its natural durability puts it in Class 1.
Typical uses
- Piers and jetties
- Benches, posts and retaining walls
- Design projects and playgrounds
- Timber construction
- Architectural features
- Flooring and cladding
- Dunnage for transport
Who we are
Consultants first, suppliers second.
Durable Hardwoods is an Australian family-owned timber firm. We don't sell what's on the shelf. We learn about your project, then source the right hardwood for it.
We specialise in the toughest outdoor conditions. With over 100 years of combined expertise and a mill network that reaches across Australia and overseas, we supply timber specified to last.
Government and council projects
We specify and supply hardwood for council and government projects, including playgrounds, park furniture, boardwalks and jetty decking.
- Registered and panel supplier to government
- Fully insured
- Treatment certificates, grading stamps and provenance records supplied
- Advice on durability class, stress grade, treatment and BAL
The right hardware for every hardwood project
Durable Hardware supplies marine grade fixings, fasteners, brackets and fittings for external use, specified to work with the timber we supply. One supplier, one conversation, everything you need to finish the project.
Explore Durable HardwareResources and the free poster
Practical guides that make timber specification simpler: durability classes, treatment levels, structural grades, BAL ratings and maintenance.
- Introduction to Timber
- Timber Ratings & Classifications
- Timber Care & Maintenance
- Sustainability & Provenance
- The Environmental Case for Wood
- Our Commitment to the Community
Australian Hardwoods poster
A one-page technical reference: common species with durability class, stress grade, hazard level, BAL rating and typical uses.
Get the free poster
Get a free assessment & quote
Tell us what you are building, where, and the conditions it has to handle. Matt will come back with the right species, grade and sizes, priced for your job.