Exterior Work for a Unique Corner of Whatcom County
Point Roberts sits in a spot unlike almost anywhere else we work. It's a small peninsula community cut off from the rest of Washington State by geography, surrounded on three sides by water and bordered by Canada on the fourth. That location makes it beautiful, but it also means homes there take a steady beating from the marine environment year-round. If you own a house in Point Roberts, you already know the drill: salt air, wind-driven rain off the Strait of Georgia, and long stretches of gray, damp weather that keep exterior surfaces wet for days at a time.
Blaine Exterior Co works throughout Whatcom County, and Point Roberts is part of that service area. We understand that a community this geographically distinct needs a crew that shows up prepared for its specific conditions, not a one-size-fits-all approach borrowed from drier inland jobs.

What the Climate Does to Exterior Surfaces Here
A few things define exterior wear in Point Roberts:
- Salt air: Being surrounded by water means airborne salt is a constant. Salt accelerates corrosion of metal fasteners and flashing, and it can degrade paint finishes and some siding materials faster than in areas farther from the coast.
- Driving rain: Storms coming off the water often arrive with real wind behind them, pushing rain sideways into siding, window seams, and roof edges rather than just falling straight down. That kind of exposure finds every weak point in flashing, caulking, and siding laps.
- A long moss season: Cool, damp, shaded conditions for much of the year create ideal growing conditions for moss and algae on roofs and on north-facing siding. Left unchecked, moss holds moisture against surfaces and shortens the life of roofing material.
None of this means a home in Point Roberts is destined for problems. It means the materials and installation details matter more here than they would in a sheltered, dry inland setting.
Siding: Why We Only Install James Hardie
Blaine Exterior Co installs James Hardie fiber cement siding exclusively. We don't install vinyl, LP SmartSide, cedar, primed spruce, or other fiber cement brands. That's a deliberate standard, not a limitation on options we happen to offer.
In a salt-air, high-moisture environment like Point Roberts, siding choice matters. Wood-based products, including engineered wood siding, rely on their outer coating staying fully intact to keep moisture out — any gap at a cut edge, fastener, or seam becomes a place where water can get in and start breaking the material down from the inside. Vinyl holds up to moisture reasonably well but can become brittle and warp under prolonged sun and temperature swings, and it's not a fire-resistant material.
James Hardie fiber cement is non-combustible and manufactured to hold its factory-applied ColorPlus finish for years without the frequent repainting that wood siding demands. Hardie's HZ5 product line in particular is engineered for harsher climate exposure, which fits a location like Point Roberts. It also carries a strong transferable warranty when installed correctly — and correct installation, with proper flashing, gapping, and fastening, is what actually determines how well any siding performs against wind-driven coastal rain over the long run.
Roofing, Windows, and Decks Built for This Location
Siding is only part of the picture. We also handle roofing, windows, and decks, and each one has to account for the same conditions.
| Component | What Point Roberts conditions demand |
|---|---|
| Roofing | Proper ventilation and moss-resistant material choices to reduce buildup during the long damp season, plus flashing details that hold up to wind-driven rain |
| Windows | Tight, correctly flashed installation so salt-laden wind and rain don't find their way behind trim and into wall assemblies |
| Decks | Fastener and framing choices that resist corrosion from salt air, and decking materials suited to near-constant moisture exposure |
A roof, window, or deck that's technically sound in a drier climate can still underperform here if the installation doesn't account for the salt exposure and constant moisture. That's the detail work we focus on.
Why a Local Crew Matters
Point Roberts' location — separated from the rest of Whatcom County by water and by an international border crossing — means it doesn't always get the same attention from contractors based farther away. A crew that regularly works the Blaine and Point Roberts area understands the access logistics, the weather patterns, and what actually fails on homes out here versus what fails inland. That familiarity shows up in fewer callbacks and exterior work that's built for the conditions it actually has to survive, not generic conditions.
Get a Straightforward Look at Your Home's Exterior
If you're dealing with moss buildup, aging siding, a roof that's taken a beating from coastal storms, or windows that let in drafts and moisture, we're glad to take a look. Reach out for a free, no-pressure estimate — we'll walk the exterior with you, explain what we see, and lay out honest options for your home in Point Roberts.
Blaine Exterior