Waterproof Vinyl Decking, Built for Seattle
Seattle decks live under the Pacific Northwest's long grey rain — and the city builds up, with rooftop terraces and condo balconies everywhere. Valordek is a continuous, fully sealed waterproof vinyl membrane, North American made and stocked just across the border. From $2.75/sq ft.
On Puget Sound, water never lets up
Seattle doesn't beat a deck with cold — it beats it with moisture, nine months a year. That's a different fight, and the one a vinyl membrane was built for.
The long grey rain
Seattle sees rain across roughly 150 days a year — a steady, soaking drizzle from fall through spring. Any deck with seams, board gaps, or fastener holes eventually lets it through. A continuous membrane gives water nowhere to go.
Rooftop + condo decks
Density means a huge share of Seattle's outdoor space is elevated — rooftop terraces, podium decks, and condo balconies over living space. A leak there isn't a rotted board, it's water in the unit below. A sealed membrane prevents it.
Moss and rot
Constant Pacific Northwest damp grows moss on timber and composite and rots the structure beneath. Vinyl doesn't absorb water, so the surface and the framing under it stay dry.
Standing water
Flat balconies and low-slope roof decks pool water through the wet season. Heat-welded seams and proper flashing keep that water sitting on a sealed surface instead of soaking in.
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 water 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 Seattle and the Puget Sound
Seattle is a city of decks you can't see from the street — rooftop terraces in Capitol Hill and Ballard, view decks on the hillsides of Queen Anne and West Seattle, and condo and townhome balconies stacked across South Lake Union and the Eastside. Add the steady tech-fueled renovation market and you have a region full of elevated outdoor space, almost all of it over living space that has to stay dry through a long wet season.
That's the heart of it: a deck or balcony over an occupied room is a roof, and it has to be waterproofed, not just surfaced. Valordek is a continuous heat-welded membrane, Intertek tested and code-compliant, so the space below stays dry — the standard that matters most on a stacked balcony or rooftop unit.
Why wood and coatings fail here first
A timber or composite deck in Seattle is in a constant fight with moisture. Water sits in board gaps and fastener holes, soaks into the wood, and feeds rot and moss; paint-on coatings blister and peel once water gets underneath. A continuous vinyl membrane doesn't absorb water and has no gaps, fasteners, or seams to fail — one sealed sheet that sheds the rain.
Right across the border
Valordek is manufactured in Surrey, BC, a short drive north of the line, and ships into Washington regularly. That keeps Seattle projects close to the source for material, samples, and support — the same membrane used on code-mandated balconies across the Lower Mainland, now on Puget Sound decks.
Installing around the rain
Contact adhesive needs a dry substrate above 50°F, so the trick in Seattle is timing the dry windows rather than a fixed season. The dry mid-summer stretch is prime, and shoulder-season installs are scheduled around clear spells.
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 | Intertek tested | Intertek tested |
| Price (membrane only) | $2.75/sq ft | $2.75/sq ft |
A finish for every Seattle 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
Is vinyl decking good for Seattle's wet climate?
It's built for it. Valordek is a continuous, fully waterproof PVC membrane — no board gaps, fastener holes, or open seams for the Pacific Northwest rain to get through, and it doesn't absorb water, rot, or grow moss the way wood and composite do over a long wet season.
Is it suitable for rooftop decks and condo balconies?
Yes — it's one of the best uses for it. A continuous heat-welded membrane fully seals a deck or balcony over living space so water can't track into the room below. The 60mil membrane is Intertek tested and fire rated for rooftop and podium decks.
What does vinyl decking cost in Seattle?
The membrane starts at $2.75 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.
Where is Valordek made, and do you ship to Seattle?
Valordek is North American made in Surrey, BC — a short drive north of the border — and ships into Washington regularly. Contact us for samples, pricing, and to be connected with an installer in the Seattle area.
Will moss grow on it like my old deck?
No. Vinyl has no grain or open surface for moss to take hold and doesn't hold moisture. A periodic rinse and soft-brush wash keeps it clean through the wet months — no sanding or re-staining.
Get Valordek in Seattle
Tell us about your deck or balcony and we'll connect you with your nearest dealer for samples, pricing, and a quote.