Deck Builders in Blaine, WA | Alpine Exteriors

Deck Building on Washington's Saltwater Border

Blaine is the last town before the Peace Arch, wrapped around Drayton Harbor with Semiahmoo Spit curling out into the bay. That geography is exactly why decks here fail differently than decks ten miles inland. Salt-laden air drifts off the harbor and quietly eats ordinary galvanized hardware, while the long Pacific Northwest wet season keeps framing damp from November clear through April. A deck built to a generic suburban specification will look fine for three summers and then start shedding fasteners.

Alpine Exteriors builds Blaine decks to a coastal standard by default: stainless or triple-coated structural screws, joist tape over every framing member, and ledger flashing detailed for wind-driven rain coming sideways off Semiahmoo Bay rather than rain that falls politely straight down.

Cedar or Composite Near Drayton Harbor

Western red cedar is the traditional Whatcom County choice, and it still makes a beautiful deck if the owner accepts a maintenance rhythm — a wash and reseal every couple of years to slow the silvering and keep moss from rooting in the grain. Composite decking has taken over much of our Blaine work, though, especially on homes out toward Semiahmoo and Birch Bay where owners are often seasonal and nobody is around in October to do the fall scrub.

Housing stock matters too. The older houses in the blocks around downtown and the harbor often carry decks added in the 1980s and 1990s, sitting on undersized footings in soft coastal soil. We routinely replace those with properly sized concrete piers, and where the ground is poor, helical piles that will not heave or settle. Every project begins with a free on-site estimate, because no two Blaine lots drain, settle, or catch the wind the same way.

What You Get With Alpine Exteriors

• Coastal-grade hardware — stainless and coated fasteners specified for salt air, not just wet weather.
• Framing that outlives the boards — joist tape, correct ledger flashing, and ventilation under low decks.
• Honest material guidance — cedar, composite, or PVC matched to how you will actually use and maintain the deck.
• Clean permits and inspections — drawings and load details handled for City of Blaine and Whatcom County review.

After 25 years in business and more than 2,000 completed exterior projects across the county, we have learned that a deck on the border coast is really a small piece of marine construction. We back that thinking with a 25-year workmanship warranty — a promise that only makes sense if the structure underneath was built for the salt, the wind, and the nine-month wet season. If your deck is graying, bouncing underfoot, or simply too small for summer evenings watching boats come into Drayton Harbor, we would be glad to walk the site with you and lay out options that fit both the house and the budget. Whether the project is a modest replacement behind a bungalow near the harbor or a full outdoor living space above the water at Semiahmoo, the details that decide its lifespan are set on day one, in the framing package nobody sees.