12/05/2026
With local green sawn Jarrah and Karri no longer available, builders and engineers are turning to an alternative solid structural hardwood. 🪵
CertiStruct22 is a premium F22-graded Merbau structural timber and is now a preferred timber for constructing and repairing jetties, wharves, boardwalks, bridge decks, heavy structural frames… you name it.
It's hard, has strong joint holding and is sustainably sourced.
💪 What to know about the timber:
✅ F22 structural grade
✅ Janka hardness of 7.6 kN
✅ Class 1 natural durability above ground
✅ Termite & bushfire resistant
✅ Low shrinkage and movement
🌱 The peace of mind:
✅ 100% FSC® Certified C-008096 – sourced from sustainable forests
✅ Pre-oiled with Intergrain Universal Oil - ready to go on site
✅ Available in a range of post, beam and heavy decking sizes
Austim have CertiStruct22 in stock ready for pick up or can deliver direct to your worksite anywhere across WA. 🚚
👉 Find out more about CertiStruct22. https://austim.com.au/certistruct22-merbau-structural-timber-perth/