Merbau timber decking

Australia’s favourite hardwood for decks

Contact me about Merbau

Merbau decking

Also referred to as Kwilla, Merbau decking is the most popular choice for Melbourne decks. Merbau is grown in New Guinea, Indonesia and North Queensland.

At Deck-Max, we only supply you timber from Government regulated supply chains and carry certified proof of origin for all of our timbers. With well established relationships with the best suppliers, Deck-Max has steady, constant access to the highest quality Merbau.

Naturally, the colour is reddish brown, with the highest grades characterised by golden spots. Ultimately though, the final colour is influenced by your choice of coating.

Preparation of Merbau

To ensure you get the best results from using merbau timber decking, special attention is required in the preparation of your timber. By doing this, Deck-Max is able to provide you with the best results in terms of board straightness, resin stability and longevity.

Kiln drying

To produce the best stability and sustained straightness of your merbau, the core moisture needs to be 15-18%.

By kiln drying over many weeks, alternated with air drying, this can be achieved in a reliable manner.

Board sizing

For maximum straightness, Deck-Max will have your timber cut as straight boards before the final sizing cuts are made.

Board lengths are also capped at 3.6m to ensure that tolerances are kept within 0.2mm, providing highly accurate sizing and improves transport options for your boards.

Proof of origin

By only supplying merbau from regulated sources, your timber is only harvested in compliance with the strictest guidelines and highest quality controls.

This ensures that you can enjoy the peace of mind, knowing that you’ll only be supplied with the best quality hardwood for your deck. This protects you, the environment and the timber industry.


Size: 110mm or 135mm wide x 19mm high. Lengths 2.4m / 2.7m /3m

Fixings: Pre-grooved for Deck-Max “Pro” biscuit and End Match.

Tolerance: +/- 0.2mm

Grain: Light, consistent grain

Colour: Red, brown, some honey

Durability: high

Hardness: Janka rating 9.0

Strength: Load tested and performance guaranteed

merbau timber decking
merbau deck

Applications for Merbau Timber Decking:

Suited for: Australia wide, including fire rated zones

Stability: Very stable, minimal expansion or contraction. More like to shrink slightly than expand.

Care of your Merbau decking timber

Moisture is the primary cause of hardwood damage. Decking is delivered with plastic covering to minimise surface marks from moisture. Store stacked and covered until laying, then clean all marks after laying (resin bleed, dirt, etc), then coat immediately with recommended penetrating oil

After laying and before coating, it is recommended that you either:
  • Clean down with Deck-Max Pro Clean to remove marks and dirt.
  • Or, run a polyvac (lightly sands the surface) before vacuuming and oiling as soon as possible

To find out more or get a quote on merbau timber decking for your project, simply enquire in the form below.

Merbau decking timber

Contact a decking specialist