Blaine Siding Siding Built for Custer's Climate
Custer sits in that stretch of northern Whatcom County where farmland, river bottom, and coastline all meet, close enough to the Strait of Georgia and Drayton Harbor that salt-laden air is a constant fact of life for anyone maintaining a home's exterior. Add in the long, wet Pacific Northwest winters and the shoulder seasons where moisture just sits, and you've got a climate that is genuinely hard on siding. We've worked enough homes in this corner of the county to know which materials hold up here and which ones start showing problems within a few years.
What Custer Homes Are Up Against
Three things drive most of the exterior wear we see out here:
- Salt air: Even a few miles inland from Semiahmoo Bay and Drayton Harbor, airborne salt accelerates corrosion on fasteners, trim, and any siding material that isn't built to resist it.
- Driving rain: Storms coming off the water don't fall straight down, they hit siding at an angle, working into laps, seams, and butt joints if the material and the installation aren't both up to the job.
- Moss and prolonged dampness: Between the tree cover common on rural Custer lots and the sheer number of overcast, wet days each year, north-facing walls and shaded siding runs stay damp longer than homeowners often realize. That's exactly the environment moss, mildew, and rot organisms need.
None of that is unique to Custer, it's true across most of Whatcom County, but the combination of salt exposure and rural tree cover shows up here in a specific way: siding that looks fine from the road can be quietly failing on the shaded, weather-facing sides of the house.
Why We Install Only James Hardie Siding
We made a decision early on to standardize on James Hardie fiber cement siding and not install vinyl, LP SmartSide, or other wood-based composite products. That's not a marketing position, it's a practical one based on what actually holds up under Whatcom County conditions.
Vinyl siding can work fine in a lot of climates, but it's a plastic product that expands, contracts, and can become brittle over time, and it doesn't offer much resistance to the kind of driving, wind-blown rain we get near the coast. Wood-based products like LP SmartSide use engineered wood strand cores, which perform reasonably well when everything about the installation and maintenance schedule is followed to the letter, but any wood-based product is fundamentally vulnerable to sustained moisture exposure, and a shaded, damp lot in Custer is not a forgiving environment for a product with a wood core.
James Hardie fiber cement doesn't have those weaknesses. It's non-combustible, it doesn't swell or rot the way wood-based siding can, and it holds up to sustained damp conditions far better than composite alternatives. The ColorPlus factory finish resists the fading and chalking that salt air and UV exposure cause on field-painted surfaces, which matters a lot for homes that don't get repainted often. Hardie also engineers specific product lines (their HZ5 line, for example) for exactly this kind of climate, cold, wet Pacific Northwest winters combined with coastal moisture. It's a system built for this region, not a generic product we're applying here anyway.
What a Siding Project Looks Like Out Here
Every Custer property is a little different. Some are close-in lots near town, some are set back on acreage with more tree cover and more shade exposure. Before we quote anything, we look at:
- Which walls take the brunt of the weather (usually the sides facing the water or open exposure)
- Where moss and moisture are already showing on the current siding or trim
- The condition of the weather barrier and flashing underneath the existing siding, not just the siding itself
- Fastener and trim materials, since corrosion-resistant hardware matters as much as the siding material in a salt-air environment
Correct installation matters just as much as the product choice. Fiber cement siding installed with the wrong fastener spacing, without proper clearances at grade, or with gaps in the water-resistive barrier will still have problems no matter how good the material is. We install to James Hardie's specifications because that's what the warranty requires and, more importantly, it's what actually keeps water out of the wall assembly over the long run.
Roofing, Windows, and Decks Too
Siding rarely fails in isolation. A roof that's letting moisture into the attic, windows with failed seals, or a deck ledger board holding water against the house all put stress on the same exterior envelope that siding is supposed to protect. We handle roofing, window replacement, and deck work alongside siding so we can look at a Custer home's exterior as one connected system rather than a list of separate projects, and so any moisture problem gets traced back to its actual source instead of just covered over.
Why a Local Crew Matters
A crew that works Whatcom County regularly knows the difference between a Custer lot buffered by trees and one sitting more exposed to open wind off the water, and that difference changes how we approach flashing, ventilation, and even which side of the house needs the most attention. It also means we're not guessing at what this climate does to a house over ten or twenty years, we're watching it happen on projects across the same weather patterns, year after year.
If you're dealing with aging, failing, or moss-covered siding on a Custer home, or just want an honest read on what condition your exterior is really in, we're glad to take a look. Reach out for a free, no-pressure estimate and we'll walk the property with you and tell you straight what we see.