Composite Decking for Sale in NSW: The Complete 2026 Buyer's Guide
A deck is one of the best places to enjoy the NSW outdoors, from summer barbecues in Western Sydney to quiet mornings on the Central Coast. But timber decks need sanding, oiling and repairs year after year. That is why more homeowners are choosing composite decking in NSW: the warm look of timber with far less maintenance.
In this guide, we explain what composite decking is, how it compares with timber, where to use it, board sizes and prices, and how to work out how many boards you need.
What Is Composite Decking?
Composite decking boards are made from a blend of materials designed to look like timber but resist the problems timber has outdoors. Our boards have a textured woodgrain surface, so they look natural and feel good underfoot.
Composite Decking vs Timber Decking
|
|
Composite decking |
Timber decking |
|---|---|---|
|
Maintenance |
Wash with soap and water |
Sand and re-oil every 1–2 years |
|
Splinters |
No splinters |
Can splinter and crack over time |
|
Rot and termites |
Resists rot and insects |
Can rot; hardwoods need treatment |
|
Colour |
Even colour, fades less |
Greys in the sun without oiling |
|
Upfront cost |
Similar to or higher than timber |
Lower for basic pine, higher for hardwood |
|
Long-term cost |
Lower, with almost no upkeep |
Higher, because of oil, labour and repairs |
For busy families and investors, the time and money saved on maintenance usually outweigh the higher upfront price.
Where to Use Composite Decking
- Backyard decks: a low-maintenance space for barbecues, kids and pets.
- Alfresco and outdoor dining areas: pairs well with brickwork, sandstone and cream façades common in NSW homes.
- Around pools: no splinters for bare feet, and no oiling after every summer.
- Garden paths and entertaining zones: a clean, modern finish for outdoor living.
- Rental and investment properties: less upkeep between tenants and a look that adds appeal.
Always check fixing requirements and suitability for your site before you build, especially for raised decks, balconies or bushfire-prone areas.
Composite Decking Colours, Board Size and Price
Our composite decking boards measure 5400 × 140 × 22 mm, with a textured woodgrain finish and a grooved edge.
|
Colour |
Look |
Pairs well with |
Price per board (AUD) |
|---|---|---|---|
|
Warm brown timber tone |
Brick, sandstone, timber furniture |
$43.00 |
|
|
Soft, modern grey |
White and cream homes, coastal styles |
$43.00 |
|
|
Bold, contemporary black |
Modern homes, black metal details |
$43.00 |
Prices are correct at the time of writing. Colours can look different on screen, so ask us for a sample before you order.
How Many Decking Boards Do You Need?
Each board covers about 0.78 m² once you allow a small gap between boards, so you need roughly 1.3 boards per square metre. Add about 10% for cuts and offcuts.
Example: a 4 × 5 m deck is 20 m². That is 20 × 1.3 = 26 boards, plus 10% = about 29 boards, or around $1,247 in boards.
This covers the boards only. You will also need a frame (joists), fixings and trims.
Installing Composite Decking: The Basics
- Build or check a level, well-drained frame with joists at the spacing the board requires.
- Leave space under the deck for airflow.
- Fix the boards with the recommended clips or screws, leaving gaps between boards and at the ends for expansion.
- Finish the edges with fascia boards or trims.
Always confirm joist spacing and fixings with us before you build. For raised decks, balconies or large projects, use a licensed builder.
Caring for Composite Decking
Sweep regularly and wash with warm soapy water and a soft brush. There is no sanding, staining or oiling.
Why Buy Composite Decking from Sun Trade?
- NSW-focused supplier: we help customers across Sydney and NSW plan their decks.
- Long 5.4 m boards: fewer joins and a cleaner finish.
- One simple price: every colour is $43 per board, listed online.
- Samples available: check the real colour against your home before you order.
- Complete outdoor look: match your deck with our outdoor wall panels for fences and feature walls.
Ready to build a deck you can enjoy, not maintain? Shop composite decking now, call +61 466 889 715, or send us your deck size on WhatsApp and we will help you work out a quote.
Frequently Asked Questions
Where can I buy composite decking in NSW? You can order composite decking boards online from Sun Trade at shop.sun-trade.com.au. Contact us with your postcode to check stock and delivery.
How much does composite decking cost? Our composite decking boards are $43.00 each for a 5400 × 140 × 22 mm board. A 20 m² deck needs about 29 boards, or roughly $1,247 in boards before the frame and fixings.
Is composite decking better than timber? For most homes, yes, if you want low maintenance. Composite does not need sanding or oiling and does not splinter. Timber costs less upfront but more to maintain.
Does composite decking get hot in the sun? All decking warms up in direct summer sun, and darker colours get hotter. For sunny, exposed areas, a lighter colour like grey or teak is a good choice.
Can I install composite decking myself? Confident DIYers can, if the frame is level and built to the right joist spacing. For raised decks or balconies, use a licensed builder.
Can I get a sample before I buy? Yes. Contact us by phone or WhatsApp to request a sample.