Composite decking in Ottawa starts at $7,495 for a 12x12 Gold package (Fiberon GoodLife, TimberTech Prime, or Eva-Last Infinity boards, plus HST, without railings) and runs to $19,895 for a 20x20 Gold. Every build carries a 5-year labour warranty. Composite is our Gold tier and up: the balance between performance and value, engineered for Ottawa's climate.
Luxury Decking is a premium custom deck builder serving Greely, Manotick, Barrhaven, Kanata, Orleans, Westboro, Stittsville and Ottawa East. We publish package prices for every standard size at every tier, and composite is the material most of our Ottawa clients choose. This guide covers what composite decking is, what it costs, how it handles Ottawa winters, and which brands we install.
Composite decking is an engineered hybrid designed to eliminate the inherent weaknesses of natural lumber. Organic wood fibres are encapsulated in a protective polymer cap, producing a board that resists rot, insects and water absorption. That cap matters in Ottawa, where heavy snow load and more than 60 freeze-thaw cycles a year break down unprotected wood surfaces.
The numbers behind the cap tell the story. Standard SPF lumber can absorb roughly 25 percent moisture; capped composite stays below 2 percent. Because water never penetrates the core, the freeze-thaw cracking cycle that splits wood boards never gets started. The result is a service life of 25 to 50 years with maintenance limited to a wash: no staining, no sanding, no sealing, ever.
A composite deck in Ottawa starts at $7,495 for a 12x12 Gold package. Published Gold pricing (base package, no railings, plus HST): 12x12 $7,495, 12x16 $9,995, 12x20 $11,995, 16x16 $12,995, 16x20 $15,995, 20x20 $19,895. That works out to roughly $50 to $52 per square foot.
Stepping up the composite range: Platinum packages (Fiberon Sanctuary or TimberTech Terrain on a 2x10 frame with dug cement footings and DeckGuard joist protection) run $12,495 to $31,995 depending on size, roughly $80 to $87 per square foot. Diamond packages (Fiberon Concord, Paramount or Promenade, or TimberTech Reserve on helical piles with an integrated LED lighting package) run $15,495 to $39,495, roughly $99 to $108 per square foot, with the 10-year extended labour warranty included. The full 6-size by 4-tier matrix is on our pricing page, and the InstaQuote calculator prices custom dimensions in about 30 seconds. For the complete market breakdown, read the Ottawa deck cost guide for 2026.
Composite is engineered for the -30°C to +30°C cycle Ottawa puts a deck through every year. Three performance areas matter most in our climate.
Moisture stability. The capped surface prevents internal water absorption, halting the freeze-thaw cracking cycle before it begins. No rot, no swelling, no spring surprises when the snow melts.
Colour retention. UV inhibitors are baked into the polymer cap, so the deck looks the same in year 10 as it did on day 1. No silvering, no chalking, no annual staining to hold the colour.
Safety and texture. Engineered surface textures deliver consistent slip resistance even when boards are wet from melting snow or pool splash, and there is nothing to splinter under bare feet in July.
Two trade-offs are worth knowing before you buy. First, upfront cost: composite starts at roughly $50 per square foot versus about $28 to $31 for our Silver pressure-treated packages, based on our published package prices. Over a 25-plus year service life the near-zero maintenance closes that gap, but the initial invoice is higher. Second, heat: darker composite colours run warmer than natural wood in full afternoon sun. On south-facing decks we steer clients toward lighter board colours, with 8 colour options at Gold, 18 at Platinum and 23 at Diamond.
We install composite matched to tier. Gold tier: Fiberon GoodLife, TimberTech Prime, or Eva-Last Infinity in 8 colours with a 25 to 30 year material warranty. Platinum tier: Fiberon Sanctuary or TimberTech Terrain in 18 colours on an upgraded 2x10 frame. Diamond tier: Fiberon Concord, Paramount or Promenade, or TimberTech Reserve in 23 colours on helical piles with LED lighting. Every tier carries our 5-year labour warranty on top of the manufacturer's material warranty. For a board-by-board comparison, see the best composite decking brands in Ottawa for 2026.
Composite is the balance between performance and value, and it is the right call for most Ottawa homeowners. PVC contains zero organic material, making it completely immune to moisture-driven decay, and it is the pick for low-clearance decks, pool surrounds and clients who want the lowest possible maintenance cycle at Platinum and Diamond tiers. We cover the decision in detail in our composite vs PVC comparison and on the PVC decking page.
How much does a 12x12 composite deck cost in Ottawa? $7,495 for our Gold package with Fiberon GoodLife, TimberTech Prime, or Eva-Last Infinity boards, plus HST, without railings. The same footprint runs $12,495 in Platinum and $15,495 in Diamond.
How long does composite decking last in Ottawa? 25 to 50 years. Gold tier boards carry a 25 to 30 year material warranty, and every Luxury Decking build includes a 5-year labour warranty with a 10-year extended option.
Does composite decking fade in the sun? No. UV inhibitors are baked into the polymer cap, so the colour holds without silvering or chalking. The deck looks the same in year 10 as it did on day 1.
Do you have to stain composite decking? No. Maintenance is limited to a wash. There is no staining, sanding or sealing at any point in the deck's life.
Is composite decking slippery in winter? No more than any outdoor surface. Engineered textures provide consistent slip resistance even when the boards are wet from melting snow.
Can composite decking rot? No. The capped surface keeps moisture absorption below 2 percent, compared with roughly 25 percent for standard SPF lumber, so the rot and freeze-thaw cracking that destroy wood decks never get started.
Run your dimensions through the InstaQuote calculator for an instant price, or book a free assessment and our mobile showroom brings actual Fiberon, TimberTech and Eva-Last boards to your backyard so you can see the colours against your home. Call 613 707-3060 or email info@luxurydecking.ca. We build across Greely, Manotick, Barrhaven, Kanata, Orleans, Westboro, Stittsville and Ottawa East.
Explore more: Deck Pricing Packages | InstaQuote Calculator | Ottawa Deck Cost 2026 | Best Composite Brands 2026 | Composite vs PVC