Vinyl Membranes for Decks in Kennewick, WA
Kennewick sits in the high desert of the Columbia Basin — 100°F summers, hard freezes, and relentless UV. A vinyl deck membrane is tested from -40°F to 176°F and stays one continuous waterproof sheet through all of it. North American made, from $2.75 USD/sq ft.
Heat, UV, and freeze-thaw — not rain
The Tri-Cities get only a few inches of rain a year. Here the enemy is temperature: brutal summer sun, sub-freezing winters, and the daily swing between them.
Extreme summer heat
Columbia Basin summers run past 100°F for weeks. Wood dries, splits and cups; coatings soften and chalk. The membrane is tested to 176°F and holds its surface.
Relentless UV
Clear skies and high sun hours fade and degrade surfaces faster than on the coast. The membrane carries UV screens and stabilizers built into the material rather than a topcoat that wears off.
Freeze-thaw winters
Winter drops well below freezing. Any water sitting in a joint or crack expands and levers the surface apart — which is why a surface with no joints matters even in a dry climate.
Irrigation, not rainfall
Most deck moisture here comes from sprinklers, hot tubs and snowmelt rather than rain, and it tends to sit in exactly the same spots. A sealed surface sheds it instead of soaking it up.
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 Kennewick and the Tri-Cities
Kennewick, Pasco and Richland sit in the Columbia Basin, and the conditions here have almost nothing in common with the west side of the state. Annual rainfall is measured in single-digit inches. What decks face instead is heat — long stretches above 100°F, intense UV off clear skies, and a daily temperature swing that expands and contracts a surface every single day. Then winter arrives and the same deck is asked to handle hard freezes.
That cycle is what destroys deck surfaces here. Boards split and cup, coatings chalk and crack, and any joint that lets water in during a freeze gets levered apart. A vinyl deck membrane is a continuous heat-welded sheet tested from -40°F to 176°F, with no joints for water to enter in the first place.
What a vinyl deck membrane actually is
It's a single PVC sheet bonded to your prepared substrate with every seam heat-welded, so the whole deck becomes one continuous surface. No fasteners pass through it, and there are no joints for freeze-thaw to work on.
Why the dry climate still needs waterproofing
It's a fair question when it barely rains. The answer is that the water which does arrive — sprinklers, hot tubs, snowmelt — lands in the same places repeatedly and then freezes. And a deck over a living space still needs to be a roof regardless of annual rainfall.
Made in North America, shipped locally
Valordek membrane is manufactured in Surrey, BC and ships into Washington regularly, so Tri-Cities 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 Kennewick 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 hold up to Kennewick summers?
It's tested from -40°F to 176°F, which covers the Columbia Basin at both ends. UV screens and stabilizers are built into the material itself rather than applied as a topcoat that wears away.
Why would I need a waterproof membrane in a dry climate?
Two reasons. Sprinklers, hot tubs and snowmelt put water on the same spots repeatedly, and in winter that water freezes and levers apart any joint it's sitting in. And any deck over a living space is a roof no matter how little it rains.
Does vinyl decking get hot underfoot here?
Any deck surface in full Columbia Basin sun gets hot, and darker colors more so. Color choice makes a real difference — talk to us about lighter options from the 12 available if your deck takes full afternoon sun.
What do vinyl membranes for decks cost in Kennewick?
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 Kennewick
Tell us about your deck or balcony and we'll connect you with your nearest dealer for samples, pricing, and a quote.