Vinyl Membranes for Decks in Olympia, WA
Olympia is one of the wettest cities in Washington, with deep tree cover that keeps decks damp long after the rain stops. A vinyl deck membrane is one continuous waterproof sheet with no seams or fastener holes for that water to find. North American made, from $2.75 USD/sq ft.
More rain, more shade, slower drying
Olympia gets more annual rainfall than Seattle and sits under heavy tree canopy. Decks here stay wet longer than almost anywhere else in the state.
A longer, heavier wet season
The south Sound catches more rain than the Seattle metro, spread across a long season. Every gap and fastener hole in a board deck is an entry point for months at a time.
Deep shade, slow drying
Olympia's tree cover means decks often don't see direct sun for days. Surfaces that stay damp grow moss and algae and never get the chance to dry out.
Historic housing stock
The downtown and Eastside neighborhoods are full of older homes with original porches, balconies, and stair landings that have been patched and re-coated for decades.
Low-slope porches
Flat and low-slope porches pool water all winter. A heat-welded membrane with proper flashing keeps that water sitting on a sealed surface instead of soaking into old framing.
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.
Vinyl deck membranes across Olympia and Thurston County
Olympia mixes a historic capital-city core with waterfront property on Budd Inlet and newer neighborhoods spreading toward Lacey and Tumwater. Many of the homes are old enough to have had several rounds of deck repair already — porches re-coated, flashing re-done, rot cut out and patched. Under the region's heavy rainfall and dense shade, surface-level fixes tend not to last.
A deck or balcony over an occupied room is a roof, and it needs waterproofing rather than resurfacing. A vinyl deck membrane is a continuous heat-welded sheet, Intertek tested and code-compliant, so the room below stays dry through the wet season.
What a vinyl deck membrane actually is
It's a single PVC sheet bonded to your prepared substrate with every seam heat-welded, turning the whole deck into one waterproof surface. No fasteners penetrate it and there are no joints to fail.
Built for shade and moss, not just rain
Because vinyl doesn't absorb water, moss and algae sit on the surface rather than rooting into it — they wash off. That matters far more in Olympia's shade than it does in an open, sunny yard.
Made in North America, shipped locally
Valordek membrane is manufactured in Surrey, BC and ships into Washington regularly, so Olympia projects stay close to the source for material, samples, and support.
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 | 15 years | 15 years |
| Fire rating | — | Class A & C |
| Temperature range | -40°F to 176°F | -40°F to 176°F |
| Certification | Intertek tested | Intertek tested |
| Price (membrane only) | $2.75 USD/sq ft | $2.75 USD/sq ft |
A finish for every Olympia home
Wood Look, Stone Look, and Classic — all stocked and ready to ship from our Surrey, BC warehouse.
Walnut Plank
Smoke Grey
Marble Beige
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
What is a vinyl membrane for a deck?
It's a single continuous PVC sheet bonded to your deck substrate, with all seams heat-welded so the surface becomes fully waterproof. Unlike boards or coatings, there are no gaps, joints, or fastener holes for water to get through.
Does a vinyl deck membrane handle Olympia's rainfall?
It's built for exactly this. The membrane is fully waterproof with no seams or fastener holes, and it doesn't absorb water — so a long wet season and constant shade don't degrade it the way they do wood.
Will moss grow on a vinyl deck membrane?
Moss can settle on any damp surface, but it can't root into vinyl the way it does into wood grain or composite. On a membrane it washes off rather than holding water against the deck.
Can it go over my older Olympia porch?
Often, yes. If the structure is sound and the substrate can be prepared properly, the membrane bonds over it for a permanent waterproof finish. Contact us and we'll assess yours.
What do vinyl membranes for decks cost in Olympia?
The membrane starts at $2.75 USD per square foot for material. Installed cost depends on deck size, substrate condition, and complexity. Size it with the cost calculator, or reach out for a quote.
Get a vinyl deck membrane in Olympia
Tell us about your deck or balcony and we'll connect you with your nearest dealer for samples, pricing, and a quote.