Composite Deck Installation

Composite decking has become the fastest-growing segment of the Metro Vancouver deck market, driven by homeowners who want the appearance of natural wood without the annual maintenance cycle of staining, sealing, and sanding that wood decks demand in Vancouver's relentlessly wet climate.

Composite decking is manufactured from a blend of wood fibres and plastic polymers (typically polyethylene or polypropylene), capped with a protective polymer shell that resists moisture absorption, UV fading, scratching, and staining.

The three dominant brands in Metro Vancouver — Trex, TimberTech, and Fiberon — all offer capped composite products with 25-year to lifetime limited warranties against structural defects, fading, and staining, making composite decking a long-term investment that eliminates the ongoing maintenance costs associated with natural wood.

The performance advantages of composite decking are particularly pronounced in Metro Vancouver's marine climate. Unlike wood, composite decking does not absorb water, which means it will not rot, warp, cup, split, or develop mould and mildew — the primary failure modes for wood decks exposed to Vancouver's 1,200mm+ annual rainfall and months of persistent dampness. Composite boards maintain their colour and structural integrity year after year without staining or sealing.

Cleaning is limited to periodic washing with soap and water or a pressure washer on a low setting. The colour and texture options available in modern composite decking are extensive — realistic woodgrain patterns that replicate cedar, tropical hardwoods, and weathered barn wood, in colour palettes ranging from warm browns and greys to contemporary charcoals and blacks.

Multi-tonal colour streaking in premium lines creates a natural variation that is virtually indistinguishable from real wood at a glance.

Composite decking installs over the same structural framing as wood decking — pressure-treated posts, beams, and joists sized per BC Building Code requirements. Most composite manufacturers specify a maximum joist spacing of 16 inches on centre for residential decking (12 inches for diagonal or herringbone patterns and for stair treads), and hidden fastener systems that attach boards from the side or underneath create a clean, screw-free surface.

Thermal expansion is the primary installation consideration unique to composite — boards expand and contract with temperature changes more than wood, and installers must leave manufacturer-specified gaps at butt joints and perimeter edges to accommodate seasonal movement. Composite railing systems are available from all major brands to match the decking, and many now incorporate integrated LED lighting for evening ambiance. WorkSafeBC coverage should be confirmed for all contractors.

Composite deck installation in Metro Vancouver typically costs $55 to $100 per square foot installed, depending on the brand and product tier, deck size, framing requirements, railing system, and site access.