Composite Decking in Port Stephens NSW

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Budget Friendly

GRT Building Supplies is your local one stop shop for all things decking. Based in Salamander Bay, we service engineers, architects and builders from across Port Stephens, Central Coast, Newcastle and more. From timber to composite decking, we’ve got something to suit every budget.  

Composite timber is a great alternative to using natural wood. Not only is it less likely to split or crack, they’re also easier to install, engineered to be stain and faderesistant, and doesn’t require oiling and maintenance. With a selection including leading brands such as ModWoodTrexMillboard and Eva-Last, we can help you achieve any design and style. 

So, if you’re looking for a simple decking solution, then our composite range is perfect for you. Give us a call today to request a quote for your delivery! 



When it comes to decking, you need a material that can withstand the intense Australian climate. ModWood manufactures a stunning range with various colours, sizes and finishes, with minimal maintenance required.  



Trex products is often considered to be the world’s number 1 brand, and for good reason. Their composite timber range is engineered to be resistant to scratches, stains, mould and fading – making them the ideal material for decks.  



Moulded from hand-selected aged timber pieces, and reinforced with mineral fibres, fibreglass, as well as a coating of polyurethane lastane, Millboard products offer some of the most durable decking materials in the market.  

Eva last


Want to give your backyard a makeover? Our Eva-Last range has everything you need. Their composite decking is made from specialised bamboo plastic, offering a lightweight product that looks stunning and is easy to install.