🎄 We’re taking a Christmas break from Tue 23 December – back Mon 12 January 2026. Orders can still be placed online and will be processed on our return.

🎄 We’re taking a Christmas break from Tue 23 December – back Mon 12 January 2026.

Orders can still be placed online and will be processed on our return.

Trex Decking Sydney Reseller

LowDeck H4 Treated Substrate

LOWDECK is Australia’s first GL8 Structural engineered bearers & joists treated to H4 for On-Ground use. Finally a timber subfloor solution made for Ultra-Low Decks.

Treated to H4 with Koppers Micro® Timber Treatment Technology, Lowdeck is protected from fungal decay, termites and insect attack. Suitable for in ground use and supported by a treatment warranty of 50 years. Engineered GL8 structural grade (roughly F7 equivalent) and double sealed with a high-quality oil-based primer to provide further protection. LOWDECK is an affordable, easy to work with alternative to steel or aluminium and is a smart upgrade from regular H3 Treated pine joists.

We will be closed from Friday 20th December and Re-open Monday 13th January.  All orders placed will be despatched on return.          Thank you for your continued support this year. Merry Christmas, the MWT Team