Custom cedar, larch, composite and Duradek decks engineered for Canmore snow load, freeze-thaw, and alpine UV. Designed, permitted, and built by a local family-owned crew - backed by a lifetime workmanship guarantee.
Engineered ground-up builds - frost-proof helical piles, kiln-dried framing, premium decking. Permits handled.
View service →Western Red Cedar - the Bow Valley classic. Naturally rot-resistant, beautifully grained, ages to silver.
View service →Alberta larch - locally sourced, dense, dimensionally stable. Premium alternative to Ipe at a friendlier cost.
View service →Zero-stain, UV-stable, 25–50 year warranty. The best low-maintenance choice for our high-altitude sun exposure.
View service →100% waterproof - the right call for second-storey decks, rooftop spaces, and anything over living area.
View service →Heavy-timber pergolas in Douglas Fir or cedar. Shade, snow shelter, and the anchor of your outdoor room.
View service →Sagging joists, heaved piers, loose railings, rot. Fixed properly - not patched. Often same-week.
View service →A filled hot tub adds 4,000+ lb to a 7' × 7' footprint. We engineer the support so your existing deck can take it safely.
View service →Tempered, wind-load engineered for Chinook gusts. Frameless or post-and-rail. The right call for view-maximizer Bow Valley homes.
View service →Every Canmore Deck Builders structure is sized for the Town of Canmore's 2.5 kPa ground snow load using 12" o.c. joist spacing and stainless or hot-dip galvanized fasteners rated for freeze-thaw cycling. Our standard ledger detail uses through-bolted Simpson DTT2Z tension ties - overkill for most Bow Valley homes, exactly right for the snow loads they actually see.
0 structural callbacks since 2015 · internal dataWe carry a 12-material standard catalog: Western Red Cedar, Alberta larch, pressure-treated SPF, Ipe, Cumaru, Trex Transcend, TimberTech AZEK, Duradek, DeckRite, plus three composite tiers. Every quote includes a side-by-side comparison so you can see which option actually fits your maintenance tolerance, budget, and elevation.
12 decking materials in our standard catalogWe handle 100% of the development and building permit process with the Town of Canmore - drawings, structural engineering coordination, lot setback checks, and inspections. For Banff homes we manage Parks Canada applications. We've never had a final inspection fail.
14-day average permit approval · 100% pass rate"Our 600 sq ft cedar deck has been through five winters now, including the heavy 2023 snow year, and it's still dead-flat with zero squeak. The crew handled our development permit, the engineering letter, the inspection - we just signed and got out of the way."James M.Three Sisters, Canmore
"We went with Trex Transcend after they walked us through what cedar maintenance actually looks like at this elevation. Glass railings, hidden fasteners, the whole nine yards. Three years in, no fading, no warping. Money well spent."Sarah J.Spring Creek, Canmore
"Reinforced our existing deck for a six-person hot tub. Other quotes wanted to rebuild the whole thing - these guys engineered a structural upgrade in place. Saved us probably $18k and the crew was respectful, on time, and cleaned up every day."Robert L.Cougar Creek, Canmore
The Bow Valley climate is hard on outdoor wood. Between the snow load, the freeze-thaw cycles, and 1,400 m of unfiltered alpine UV, decks here age faster than the same structure in Calgary. These are the four issues we're called out for most often.
The Town of Canmore design snow load is 2.5 kPa. Decks built before the 2010 NBCC update were often sized to 1.9 kPa - enough margin lost that we see visible mid-span sag after a normal winter. We sister or replace joists and add mid-span beams where needed.
2.5 kPa · current code minimumCanmore's frost line is 1.2 m. Concrete pads or short sonotubes set above that depth heave and tip every spring, pulling the deck out of square. We retrofit with helical piles driven below frost - installable year-round, including mid-winter.
1.2 m · Canmore frost depthAt 1,400 m elevation the UV index runs roughly 20% higher than Calgary at the same latitude. Untreated softwoods grey out in 18 months and start checking. We sand, brighten, and apply two-coat penetrating oil rated for alpine exposure - typically a 2–3 year cycle, not annual.
+20% UV vs. Calgary · NRC dataAlberta Building Code requires 42" rail height with a 200 lb concentrated load capacity. Pre-2006 decks are commonly 36" - non-compliant for resale. We modernize the railing system to current code with through-bolted posts and tested-system infill.
42" · current rail-height minimumFrom a 12' × 14' sun deck off a townhouse in Spring Creek to a 1,200 sq ft multi-level entertaining deck on a Silvertip slope, we build across the full residential range.
250–600 sq ft, one elevation, integrated bench seating, optional fire-table cutouts. Our most-requested build - typically 10–14 days on site.
~$95–140/sq ft · cedar buildTwo- or three-tier builds that follow Canmore's typical slope lots. Each level zoned for a use - dining, lounge, hot tub. Stair runs always to code.
3-tier average · 18-day buildAlways Duradek or another waterproof membrane over a sloped substrate. We coordinate with your roofer on the warranty interface so neither system voids the other.
20-year Duradek warranty pass-throughFilled 7-person hot tub = 4,000+ lb. We engineer the substructure to support concentrated point loads with steel beams or doubled LVLs where needed.
4,000+ lb · typical hot tub live load
Canmore Deck Builders was founded in 2015 by a small crew of Bow Valley tradespeople who were tired of seeing decks built for Calgary delivered to a mountain town. We live where we build - same snow load, same freeze-thaw, same alpine sun - and we design every structure for the conditions it'll actually face.
Today we run a permanent crew of seven, take on roughly 35–45 builds a year, and turn down work that doesn't fit. Every project is overseen end-to-end by the same lead carpenter from quote to final inspection. That's how we keep our zero-structural-callback record intact.
Read our story →Our service radius covers everything from Banff to the eastern edge of the Bow Valley. On-site consultations are free within this area - we don't charge a quote fee, and we'll come to you for a no-pressure walkthrough of your existing space.
Outside the Bow Valley? We've taken occasional referral work in Cochrane and the Springbank area when the project fit. Get in touch and we'll let you know.
Book a site visitA standard 250–400 sq ft deck typically takes 10–14 working days after permits are approved. Multi-level builds, rooftop decks, or projects involving structural reinforcement run 3–4 weeks. We schedule winter helical-pile installs so the structure is ready the moment frost lifts.
Yes. We prepare the drawings, submit the development and building permit applications to the Town of Canmore (or Parks Canada for Banff), and coordinate any structural engineering stamps required for decks over 0.6 m off grade. Average turnaround is 14 business days.
For low maintenance under intense alpine UV and freeze-thaw, capped composite (Trex Transcend, TimberTech AZEK) and Duradek vinyl membrane perform best. For warmth and authenticity, Alberta larch and Western Red Cedar are excellent - they require a maintenance stain every 2–3 years at our elevation.
We back every deck with a lifetime workmanship guarantee on the structural frame and connections we install. Material warranties (decking, fasteners, membrane) are passed through from the manufacturer at full retail terms - typically 25–50 years on composite and 20 years on Duradek.
Yes - we partner with Financeit, the leading Canadian home-improvement lender. Approval is typically same-day and monthly payments can start under $150/mo on a mid-range build, with terms from 6 to 120 months.
Town of Canmore and Banff require decks to be designed for a ground snow load of 2.5 kPa (≈52 psf). We exceed this on every build by using closer joist spacing (12" o.c.) and engineered ledger connections, which adds margin for the 1-in-50 winter that occasionally hits 3.0+ kPa.