Alpine Exteriors
Siding · Bellingham, WA & Whatcom County

Roofing Contractors Serving Puget Sound, WA

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25 Years in Business2,000+ Projects Completed25-Year Workmanship Warranty5-Star RatedLicensed & Insured

Roofing Built for the Puget Sound Convergence

Weather on Puget Sound rarely arrives politely. Systems roll in off the Strait of Juan de Fuca, split around the Olympics, and collide again over the Sound, driving rain sideways into ridgelines from Bellingham Bay down to Everett. A roof here is not just shedding water from above; it is fighting wind-driven moisture at every flashing, valley, and vent penetration, often for two hundred days a year.

Add the region's long gray season and you get the Northwest's signature roof problem: moss. North-facing slopes shaded by Douglas fir stay damp from October through June, and moss pads lift shingle edges until capillary action pulls water underneath. On the split-levels and ranches built around the Sound in the 1960s through 1980s, we routinely find decking rot that started as a harmless-looking green fringe along the eaves.

What we do

Alpine siding, roofing, windows & decking.

What We Install, and Why

Alpine Exteriors has spent 25 years replacing roofs in this marine climate, and the systems we recommend reflect that experience. Architectural composition shingles with algae-resistant granules handle most homes well. For exposed waterfront and bluff properties that take the brunt of the southerlies, standing-seam metal sheds water and moss alike and shrugs off gusts that peel lesser roofs apart at the rake edge.

Every tear-off gets the same treatment:

  • Full removal down to the deck, with rotten sheathing replaced rather than covered over
  • Ice-and-water membrane at eaves, valleys, and around every penetration
  • New flashing at chimneys, skylights, and sidewalls — never reused metal
  • Balanced intake and ridge ventilation to dry the attic from the inside

Ventilation deserves special mention. Puget Sound attics trap humid interior air against cold sheathing all winter, and condensation can rot a roof from below while the shingles above still look fine. Correcting airflow is part of every roof evaluation we perform, not an upsell tacked on afterward.

Salt Air and Metal Fastenings

Homes within a mile or two of saltwater face one more quiet enemy: corrosion. Salt-laden wind attacks exposed nail heads, valley metal, and bargain-grade galvanized flashing years before the shingles themselves wear out. On shoreline work we specify stainless or coated fasteners and heavier-gauge flashing as a matter of course, because replacing corroded metal on a ten-year-old roof is money nobody should have to spend twice.

A Crew That Works This Water Year-Round

From Anacortes and the Skagit flats to Snohomish County's commuter towns, our crews have completed more than 2,000 exterior projects around the Sound. We schedule around the weather windows this region actually gives us, protect landscaping and cedar decks during tear-off, and back the finished roof with a 25-year workmanship warranty — coverage on the labor, not just the manufacturer's paper on the shingles.

If your roof is streaked, mossy, or moving into its third decade, we will walk it, photograph what we find, and give you a straight answer about repair versus replacement. We provide free on-site estimates with no pressure attached — just an honest read on what the Sound has done to your roof so far.

Recent work

Craftsmanship you can see.

Free, no-pressure estimate

Ready to get started?

Tell us about your project and we'll follow up — usually the same day — to schedule a free on-site estimate anywhere in Whatcom, Skagit & Snohomish County.

(360) 543-4799

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