Siding Contractors on San Juan Island, WA

Island homes age differently. San Juan Island sits in the rain shadow of the Olympic Mountains, so Friday Harbor actually sees far less rainfall than Bellingham — but what the island lacks in rain it makes up for in salt-laden wind off Haro Strait and long hours of unfiltered summer sun. Siding out here fades, checks, and corrodes at its fasteners in ways that mainland walls rarely do, and it deserves a contractor who has seen those failure patterns before.

Siding That Stands Up to Salt Air and Island Wind

We work on the full range of island housing: shingled cottages within walking distance of the Friday Harbor ferry landing, working farmhouses out along San Juan Valley Road, and newer custom homes above Roche Harbor and Westcott Bay. Southwest-facing walls take the brunt of winter storms rolling up from the Strait of Juan de Fuca, and near Cattle Point the wind exposure is relentless. We routinely find rusted nail heads, cupped boards, and blown-out caulk joints concentrated on one weather wall while the rest of the house still looks respectable.

For most island projects we recommend fiber cement or properly finished cedar installed over a ventilated rainscreen, with stainless or hot-dipped galvanized fasteners throughout. Salt air is unforgiving to bare steel, and the single most common shortcut we correct on San Juan Island is the wrong nail in the right board. Alpine Exteriors has spent 25 years in business learning exactly where marine-exposure siding fails first, and we build those lessons into every wall we wrap.

How We Handle the Ferry — So You Do Not Have To

Working on the island means planning around the Anacortes ferry, and that is our problem to solve, not yours. We stage material deliveries and crew days in blocks so your project never stalls waiting on a missing bundle of trim, and we confirm quantities before anything rolls onto the boat. Here is what an island re-side with us includes:

• A full tear-off inspection of sheathing and weather barrier, not a cover-over
• Stainless-grade fasteners and flashing matched to marine exposure
• Factory-finished or site-finished cladding rated for high UV
• A jobsite left broom-clean between every crew rotation

Because crews commit to the island for full working blocks, projects tend to move faster than homeowners expect once materials land.

Free On-Site Estimates, Anywhere on the Island

Estimates are free and genuinely on-site — we ride the ferry, walk your walls, probe the suspect spots, and give you a written scope, whether you are in town, near American Camp, or up at the north end. With more than 2,000 projects completed across northwest Washington, we price from experience rather than guesswork.

Every installation is backed by our 25-year workmanship warranty, which matters more on an island where calling a contractor back is never a five-minute favor. We would rather flash it, seal it, and fasten it correctly the first time — and then put that promise in writing. If your siding is chalking, cracking, or bleeding rust streaks below the nail lines, let us take a look before another storm season tests it.