Choosing the right composite decking is a major investment for any Australian home. While timber has been the traditional go-to, the harsh UV rays and moisture levels in Victoria have made low-maintenance composite brands like Trex, NewTechWood, and TimberTech the top contenders for 2026.

This guide compares these three giants to help you decide which material belongs in your backyard.

Trex is often the first name people think of when they hear "composite decking." Known for its massive market presence and eco-friendly manufacturing, it offers a reliable, mid-to-high-end solution.

• Composition: 95% recycled materials (reclaimed wood and plastic film/bags).
• Capping: Most lines feature a 3-sided "shell" that protects the top and sides while allowing the bottom to breathe.
• Best For: Homeowners seeking a reputable, environmentally-conscious brand with a consistent, modern look.
• Pros: * Unrivaled sustainability story.
  • Transcend Lineage includes heat-mitigating technology (critical for North-facing Aussie decks).
  • Strong 25–50 year warranties against fading and staining.
• Cons: The 3-sided cap means the underside is slightly more vulnerable to moisture if drainage isn't perfect.

NewTechWood has gained a massive following in Australia because of its "UltraShield" technology. It is often cited as the most balanced option for durability and aesthetics.

• Composition: Recycled plastic and wood fibers (including rice husks).
• Capping: 4-sided 360-degree capping. Every inch of the board, including the grooves, is protected by a polymer shell.
• Best For: High-moisture areas, pool surrounds, or homes in bushfire-prone areas (many lines are BAL-29 rated).
• Pros: * The 360-degree cap provides maximum protection against rot and swelling.
  • Highly realistic, multi-chromatic colors that mimic natural Australian hardwoods like Spotted Gum.
  • Hidden clip systems make for a very clean, screw-free finish.
• Cons: Can be slightly more expensive than entry-level Trex lines.

TimberTech (often grouped with its AZEK line) is the high-performance athlete of the group. If you want the most realistic "timber look" or a board that contains zero wood, this is it.

• Composition: Offers both capped composite (PRO line) and Capped Polymer (AZEK line) which is 100% PVC (no wood fibers).
• Capping: 4-sided protection on most premium lines.
• Best For: Luxury builds, coastal properties (salt air), and anyone who wants a "zero-wood" product to eliminate moisture risk entirely.
• Pros: * TimberTech AZEK is 100% moisture-resistant (perfect for lakeside or pool-side).
  • Stays cooler than traditional composite on hot days.
  • Industry-leading 50-year fade and stain warranties.
• Cons: Generally the most expensive option on the list.

FeatureTrexNewTechWoodTimberTechPrimary MaterialWood/Plastic CompositeWood/Plastic CompositePolymer (PVC) or CompositeCapping3-Sided4-Sided (360°)4-SidedRecycled Content95%95%Up to 85%Moisture ResistanceHighSuperiorExtreme (PVC lines)AestheticsModern/UniformMulti-tonal/NaturalHighly Realistic GrainWarranty25–50 Years25 Years30–50 Years

You want a world-renowned brand with a heavy focus on sustainability. The Transcend range is a "set and forget" choice that looks great in modern architectural homes and offers excellent fade resistance.

You live in a high-moisture area or want the best protection against the Australian elements. Its 360-degree capping makes it a "bulletproof" choice for pool decks, and the BAL-29 rating is a major plus for regional Victorian builds.

Budget is less of a concern than absolute performance and realism. If you want a deck that looks exactly like real timber but will literally never rot—even if submerged—the TimberTech AZEK series is the gold standard.

Expert Tip: Before buying, always request physical samples. Composite colors can shift significantly depending on the time of day and whether your deck is under a pergola or in full Victorian sun.