Siding Contractor · San Juan County, WA
Siding & Window Vault works San Juan County's harbor-town homes, island farmsteads, and view builds from right across the water — our Anacortes showroom (opening soon) sits at the mainland end of every sailing. A James Hardie Elite Contractor, not a franchise dispatching from out of state.
Request a free, no-obligation estimate at your San Juan County home — measured on site, itemized, specific to your house.
4.9/5 average across all platforms — many from San Juan County addresses
Every San Juan County home is marine-exposed on some axis — southwesterly weather works up the channels into south- and west-facing walls, salt rides the air well inland of the beach, and the islands' shaded cedar lots hold the moisture that feeds moss. There's no leeward side of the county to hide a house on; the exposure just changes name from island to island — Haro Strait, San Juan Channel, Rosario Strait.
The housing stock is three islands' worth of eras: harbor-town homes and storefronts in Friday Harbor, resort-era and view construction on Orcas, farmsteads and cabins on Lopez, and newer builds scattered along the shorelines and ridges of all three. Each era fails differently, and each gets a different plan.
What we see most in San Juan County: cedar and shingle siding rotted at the bottom courses on weather-facing walls, LP-era siding from the '80s and '90s swelling at the seams, and salt-corroded fasteners and hardware failing years before the boards they hold. None of it is cosmetic — by the time siding shows these signs, water is usually getting behind it.
…and every community in between, county-wide.
San Juan County's housing market rewards exterior condition — buyers compare street by street, and appraisers see siding before they see anything else. National cost-vs-value data consistently ranks fiber cement siding replacement among the highest-returning exterior projects at resale, and in a wet-climate market, "recently re-sided" answers the first question every inspector asks.
What your project costs depends on material, home size, and stories — and on what we find under the old siding. That's why every bid is measured on site and itemized: the number you approve is the number you pay, with rot repair priced transparently if we find it.
For most San Juan County homes, fiber cement — it shrugs off all-sides salt and a century of island repairs without cedar's repaint cycle. On the harbor-town and farmstead stock, lap and shingle profiles keep the period look in a material that doesn't rot at the bottom course.
One thing we don't install: vinyl siding. In this climate it traps moisture against the wall and fails in ways we're not willing to warranty. If budget is the driver, we'd rather show you an engineered-wood option that actually holds up here.
One local contractor for the whole exterior — each service has its own San Juan County page with local details.
Real SWV projects from across our five-county service area — ask to see finished work near your own neighborhood at your estimate.
See All Projects →We install several siding materials, and we recommend fiber cement — James Hardie specifically — for nearly every home we work on in San Juan County. In a wind-driven-rain state, fiber cement doesn’t rot, doesn’t feed moss, doesn’t warp, and shrugs off the freeze-thaw cycles that crack lesser boards. It carries a 30-year substrate warranty, and ColorPlus factory finishes hold their color for 15 warranted years without repainting.
As a James Hardie Elite Contractor we install to the spec that keeps that warranty valid — fastening, clearances, and flashing details checked on every wall. If a different material genuinely fits your project better, we’ll say so plainly in the bid — but for most San Juan County homes, Hardie is the answer we’d put on our own house.
Most single-family whole-home siding replacements typically land between $20,000 and $60,000, driven mainly by home size and stories. Window replacement typically runs $900–$2,500 per window installed depending on brand, type, and size — and typically 25%+ less per window when replaced during a re-side, since demolition, disposal, and administrative overhead are already carried by the siding project.
Nationally, fiber cement siding replacement is one of the best-returning exterior projects at resale — recent Cost vs. Value Report data puts its cost recoup above 100% (a national figure; local results vary). Every bid is measured at your home and itemized line by line — the ranges are for orientation, not quotes. Financing options are available.
James Hardie siding carries a 30-year substrate warranty, with ColorPlus finishes warranted for 15 years. Windows carry the full manufacturer warranty.
On top of the product coverage, our own workmanship warranty is included on every project; the terms are spelled out in your bid.
A full home siding replacement typically runs one to four weeks on site depending on size, sheathing condition, rot, and whether we're painting. A whole-home window replacement typically runs three to seven days — full-frame nail-flange replacement, not pocket inserts, which takes longer and is worth it.
Your schedule is in the bid before work starts, and the final inspection is part of it.
Ranges are typical figures for orientation — every bid is measured at your home. Financing options →
No good-better-best games — every project gets the full scope, spelled out line by line in your bid.
If our installation fails, we come back and make it right. The warranty terms are spelled out in your bid — ask us for the current details.
San Juan County ZIP codes served: 98250 · 98245 · 98243 · 98279 · 98280 · 98261
A free on-site estimate anywhere in San Juan County — measured at your home, itemized, and honest about what needs work now and what can wait.
