Composite Decking Cost in Calgary: Prices, Materials and Where to Buy

The question that comes up on every site visit once composite enters the conversation: just give me a rough range. Installed, composite decking runs $45 to $70 per square foot in this market, materials and labour together. A basic pressure-treated deck starts cheaper. Composite starts higher and stops asking for anything after that, which is the trade homeowners are actually weighing when they call.

This guide breaks down what drives that price, what a 12×12 or 20×20 composite deck actually costs, where Calgary homeowners buy the material, and the one or two things about composite the brand websites never quite say out loud.

What Composite Decking Is Made Of

Wood fibre and recycled plastic, pressed and extruded into a board. Most composite boards on the market today also get a plastic cap layer bonded around the core, the part that actually resists moisture, fading, and staining. Uncapped composite exists and costs less, but it absorbs water at the edges over time the way capped boards do not.

Trex, TimberTech, Fiberon, MoistureShield: different recipes, same basic idea. Wood fibre content, cap thickness, and colour-fade technology are what separate an entry-level composite board from a premium one, and that difference shows up directly in the price per square foot.

Composite Decking Cost Per Square Foot

$45 to $70 per square foot installed, in Calgary, covers substructure, decking, hardware, and labour together. Board profile, brand, and fastener type move a project within that band. A basic solid-core board with visible face screws sits at the low end. Premium capped boards with hidden fasteners and a wider colour range sit near the top.

US material-only pricing floating around online, $10 to $27 per square foot for the boards alone, is not the same number. That figure skips substructure, skips labour, and skips the exchange rate. Homeowners who quote a Calgary composite deck off a US material calculator usually end up short by half the real budget.

What Actually Moves the Price

Size sets the baseline, obviously, but four other things do most of the real work on a quote:

Board tier. Entry-level capped boards cost less than premium colour-blended lines. The gap between the cheapest and most expensive composite product on the market can run $10 or more per square foot on the board alone.

Fastener system. Hidden fastener clips add labour time and hardware cost over face screws. Most homeowners choosing composite want the clean look enough to pay for it, still.

Substructure. Framing typically makes up a third or more of the total job. A deck built over uneven grade, or one that needs taller posts for a walkout basement, costs more before a single composite board goes down.

Design. Multi-level layouts, picture-frame borders, curved edges, built-in benches: every one of those adds labour hours a straightforward rectangular deck never needs.

What a Composite Deck Actually Costs by Size

Rough numbers, straightforward single-level build, no upgrades. 12×12 (144 square feet): $6,500 to $10,000. 14×20 (280 square feet): $12,600 to $19,600. 20×20 (400 square feet): $18,000 to $28,000. Roughly 500 square feet, a size that shows up often in quote requests, prices out around $22,500 to $35,000 installed.

Those figures track the same per-square-foot math used across every deck material in Calgary. The full size-by-size breakdown across pressure-treated, cedar, composite, and vinyl, plus how site access and foundation type shift the numbers, lives on our deck cost page.

Is the Composite Premium Worth It?

Depends what a homeowner values more, time or money upfront. Wood wins on day one, every time. Composite starts winning around year eight or nine, once the staining weekends a cedar or pressure-treated deck demands start adding up against a composite surface that needed nothing but an occasional hose-down.

We have composite decks twelve years old that still look nearly new. That is the argument that eventually settles most homeowners on the higher number, once they’ve done the maintenance math for themselves. Our deck lifespan guide covers the full comparison across every deck material, cedar through composite.

What Is the Downside of Composite Decking?

Two things worth knowing before ordering, and neither shows up on a brand’s product page. Colour-matching a replacement board years later almost never works cleanly. Composite boards fade slightly and consistently across a batch, and a board bought from a different dye lot two or three years later, even the same product line, rarely matches perfectly once it sits next to the original run.

The second: you can’t sand or refinish composite the way you can wood. A deep gouge or a burn mark from a fire pit stays there. Wood takes a sander and a fresh coat of stain; composite takes a board swap.

Neither is a reason to skip composite. Both are worth knowing going in, rather than finding out on the first repair call.

Where to Buy Composite Decking Near Calgary

Three real options: a specialty decking or building supply yard, a big-box hardware store, or ordering direct through a contractor. The specialty yards carry the widest colour and profile selection and usually know each brand’s fastener system cold. Big-box stores stock a narrower range, often just one or two colours per line, and inventory shifts by season.

Costco does not carry composite boards as a regular stocked item in Canada. It shows up occasionally as a seasonal online listing, not something to plan a project around. Homeowners chasing a Costco deal usually end up back at a specialty yard once the seasonal listing disappears mid-project.

Sungreen sources and installs composite decks across Calgary and the surrounding communities through our deck building service, with board and brand selection built into the same free estimate as the rest of the quote. No separate materials trip required.

Tanzite Composite Decking Cost

Tanzite is a smaller composite brand that shows up in search fairly often for a product with limited Calgary distribution. Pricing runs comparable to mid-tier composite lines generally, in the same $45 to $70 per square foot installed range once labour and substructure get added in. Availability is the real constraint, though. Fewer local yards stock it compared to Trex or TimberTech, which means longer lead times on colour-matched replacement boards down the road, the same colour-matching issue that applies to every composite brand.

PVC vs Composite Decking

PVC is fully synthetic, no wood fibre at all, and it costs more than composite on average. It handles moisture better at the core since there’s no wood content to absorb it, which matters more on a ground-level deck near a pool or hot tub than a standard elevated deck. Most Calgary homeowners choosing between the two land on composite anyway, once the price gap and the wood-look preference both factor in.

Frequently Asked Questions

Which brand of composite decking is the cheapest?

Entry-level lines from any major brand price close together, generally the bottom of the $45 to $70 per square foot installed range. Trex Enhance and TimberTech’s base collections both sit near the low end. Premium colour-blended lines from either brand run well above that.

Where can I buy the cheapest Trex decking?

Big-box stores occasionally run seasonal pricing on base-tier Trex boards, though the colour selection stays thin, one or two shades typically. A specialty decking yard usually beats big-box on the full colour range even if the sticker price runs slightly higher, since substructure and installation get quoted together rather than as a separate materials trip.

What is better, PVC or composite deck boards?

Composite for most Calgary homes, mainly on price and the wood-grain look most homeowners want. PVC pulls ahead only where moisture exposure is constant, a ground-level deck right next to a hot tub or pool.

How long will composite decking last?

20 to 25 years is the typical range, longer with routine cleaning. Our deck lifespan guide covers the full detail by brand and board type, plus what shortens it.

How much is 500 sq ft of composite decking?

Around $22,500 to $35,000 installed, at the same $45 to $70 per square foot band used across every composite quote in this market. Add-ons and site conditions move it from there.

How much does a 14×20 deck cost in Canada?

In composite, $12,600 to $19,600 installed for a straightforward single-level build. Pressure-treated and cedar run lower for the same footprint; the full material-by-material breakdown is on our deck cost page.

Does Costco sell composite decking?

Not as a regular stocked product in Canada. It surfaces occasionally as a seasonal online listing. Specialty decking yards are the more reliable source for consistent stock and colour matching.

Composite pricing moves with brand, board tier, and site conditions more than most homeowners expect walking in. A free estimate settles the real number for a specific lot and material choice before anything gets ordered.