Waterproof Vinyl Decking, Built for Cranbrook
In the East Kootenays a deck takes a true four-season beating — snowy mountain winters, then dry, high-UV summers. Valordek is a continuous waterproof vinyl membrane tested from -40°C to 80°C, built to flex through the whole swing. Canadian-made and shipped across the Kootenays.
Four hard seasons in the mountains
The Kootenay climate is a full continental swing — deep snowy winters and hot, dry, high-UV summers. A deck here gets worked from both ends of the thermometer.
Snowy mountain winters
Cranbrook sits high in the Rockies and gets a real winter — sustained cold and snow load on the deck for months. Rigid coatings and wood go brittle and crack; the membrane stays flexible to -40°C.
Hard freeze-thaw
The mountain shoulder seasons swing across the freezing point again and again. That repeated freeze-thaw pries open board gaps and splits coatings. A heat-welded continuous membrane moves with the cycle instead of cracking.
High-elevation UV
Cranbrook is one of BC's sunniest spots, and at elevation the summer UV is intense. It bleaches stain and dries out wood fast. UV-stable vinyl holds its colour for the life of the deck.
Dry-then-snow swings
Bone-dry summers check and split wood; winter snow then soaks it. A sealed vinyl surface doesn't drink up moisture or move with the humidity, so it skips the seasonal damage cycle entirely.
Two membranes. Built for two jobs.
Valordek bonds directly to your substrate and heat-welds into one continuous waterproof surface. No board gaps, no fasteners through the surface, nothing for meltwater to find.
68mil Fuzzy-Back
The standard for residential balconies and decks over living space. Contact-adhered with heat-welded seams for a fully sealed, walkable waterproof surface.
60mil Smooth-Back
Built for rooftop and amenity decks. PVC flashing on open decks plus heat-welded seams. Class A & C fire rated and Intertek tested.
Serving Cranbrook and the East Kootenays
Cranbrook is the hub of the East Kootenays, and the surrounding region — Kimberley, Fernie, Invermere, and the Columbia Valley — runs on mountain homes, recreation properties, and a strong second-home and retirement market. These are decks built for big mountain views and used hard in summer, then buried in snow all winter. They need a surface that takes both without complaint.
The National Building Code treats any deck or balcony over occupied space as a roof — it has to be waterproofed to CGSB 37.54 standards, not just surfaced. Valordek's membranes carry CCMC and Intertek certification confirming they meet code 37.54.95.
Why wood and coatings fail here first
The Kootenay swing is brutal on a deck: dry summer heat checks and splits the wood, intense UV greys it, then winter snow load and freeze-thaw finish the job. Coatings crack in the cold and chalk in the sun. A continuous heat-welded vinyl membrane flexes to -40°C, won't fade, doesn't absorb water, and has no seams to split — one sealed sheet for all four seasons.
Built for snow and mountain decks
The 68mil Fuzzy-Back gives open mountain sundecks a seamless, walkable waterproof surface; the 60mil Smooth-Back seals decks over a suite or carport with PVC flashing and a fire rating. Both shed snowmelt across one continuous sheet rather than letting it work into joints.
Snow and winter maintenance
Clear snow with a plastic shovel or soft-bristle broom — never a metal blade or ice scraper on the membrane. Calcium-chloride de-icers are safe, and the membrane stays flexible at -40°C, so a winter of snow removal won't crack it the way it cracks a coated or wood deck.
Want a number for your deck? Try the cost calculator or reach out for a quote.
The technical detail
| Specification | Balcony (68mil) | Rooftop patio (60mil) |
|---|---|---|
| Installation | Contact adhesive + heat-welded seams | Adhesive + PVC flashing + heat-welded seams |
| Waterproofing warranty | 10 years | 15 years |
| Fire rating | — | Class A & C |
| Temperature range | -40°C to 80°C | -40°C to 80°C |
| Certification | CCMC, code 37.54.95 | Intertek, code 37.54.95 |
| Price (membrane only) | $3.74/sq ft | $3.74/sq ft |
A finish for every Cranbrook home
Wood Look, Stone Look, and Classic — all stocked and ready to ship from our Surrey, BC warehouse.
Walnut Plank
Smoke Grey
Marble Grey
River Rock
Grey Stone
Beige StoneValordek on real decks
Valordek's membrane is made in Surrey, BC and ships across British Columbia, Alberta, Saskatchewan, and Washington — with dealers and installers in communities throughout the region.
Explore all service areasCommon questions
Can vinyl decking handle Kootenay winters?
Yes. Valordek is rated to -40°C and stays flexible instead of going brittle, so it holds its waterproofing through Cranbrook's sustained cold, heavy snow load, and the repeated freeze-thaw of the mountain shoulder seasons.
Will it fade in the high-elevation summer sun?
No. The vinyl is UV-stable, built to hold its colour through the intense high-elevation UV that greys wood and bleaches stain in one of BC's sunniest regions. No annual re-stain.
Can I shovel snow off it all winter?
Yes — use a plastic shovel or soft-bristle broom and avoid metal blades or ice scrapers on the membrane. Calcium-chloride de-icers are safe, and because it stays flexible at -40°C, a winter of snow removal won't crack it.
What does vinyl decking cost in Cranbrook?
The membrane starts at $3.74 per square foot for material. Total installed cost depends on deck size, substrate condition, and complexity. Size your project with the cost calculator, or reach out for a quote.
Do you ship to Cranbrook and the Kootenays?
Yes. Valordek is Canadian-made and ships across the East Kootenays — Cranbrook, Kimberley, Fernie, Invermere, and the Columbia Valley. Contact us for samples, pricing, and to be connected with a local installer.
Get Valordek in Cranbrook
Tell us about your deck or balcony and we'll connect you with your nearest dealer for samples, pricing, and a quote.