Blaine Siding Siding for Custer Homes in Whatcom County
Custer sits in the stretch of Whatcom County between Ferndale and Blaine, close enough to the coast that homes here deal with the same marine climate that shapes exterior wear all along this part of the county. It's a mix of rural properties, farmland, and residential lots, and the houses on them share a common set of problems: siding that stays damp for long stretches, wood trim that goes soft at the corners, and roofs and north walls that grow moss faster than anyone would like.
What the Climate Does to Siding Here
Whatcom County's marine air brings moisture in from Puget Sound and the Strait of Georgia, and Custer gets its share of that salt-tinged air along with the rain. The combination matters because it's not just about how much rain falls — it's about how long a wall stays wet afterward. Salt air holds moisture longer against a surface, driving rain pushes water into seams and laps that stay dry in calmer climates, and the shaded, tree-lined lots common around Custer slow down drying even more. That's a tough combination for any siding material, but it's especially hard on wood-based products and anything with a paint or coating layer that depends on staying dry to hold up.
The long moss season is the most visible symptom. Moss doesn't just grow on roofs — it takes hold on north-facing siding, under eaves, and anywhere sun doesn't reach for months at a time. Left alone, it holds moisture against the surface and accelerates whatever decay process is already underway, whether that's rot in wood trim or coating failure on painted siding.
Why We Install James Hardie Fiber Cement — and Nothing Else
We install James Hardie fiber cement siding exclusively. We don't install vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar, and that's a deliberate standard, not a limitation of what we're capable of installing. Fiber cement is non-combustible and dimensionally stable in a way wood and wood-composite products aren't, which matters directly in a climate like Whatcom County's where materials stay wet for extended periods. Hardie's ColorPlus factory-applied finish is baked on under controlled conditions rather than field-applied, which gives it better adhesion and fade resistance than site-applied paint has to work against — especially useful in an area where crews can't always paint or caulk under ideal dry conditions.
Hardie also engineers its product lines by climate zone (HZ5 for our region), which accounts for the moisture exposure that's normal here rather than treating the Pacific Northwest the same as a dry inland market. That, plus a strong transferable warranty, is why we standardized on it rather than offering a menu of lower-cost alternatives that carry more maintenance risk in this specific climate.
Where Other Products Fall Short Here
- Vinyl can warp and its seams loosen with the temperature swings and driving rain typical of Whatcom County, and it doesn't offer the fire-resistance profile of fiber cement.
- Wood and primed spruce require ongoing paint and caulk maintenance to keep moisture out — maintenance that's harder to keep up with when the material stays damp for months out of the year.
- Cedar is a good-looking natural product, but it needs consistent upkeep to resist rot and moss in a climate this wet, and that upkeep cost adds up over the life of a home.
- Other fiber cement brands may be a reasonable product on paper, but we've standardized on Hardie's factory finish and warranty structure rather than mixing installation standards across brands.
Roofing, Windows, and Decks
Siding doesn't fail in isolation — the same moisture and moss pressure that wears on walls in Custer also shows up on roofs, around window flashing, and on deck boards and framing. We handle all four: siding, roofing, windows, and decks, because a home's exterior envelope works as a system. A new siding job with a leaking roof valley or failed window flashing behind it doesn't solve the underlying moisture problem, so we look at the whole exterior, not just one component, when we're out at a property.
Why a Local Crew Matters
Installation quality is what determines whether any siding product performs the way it's rated to. Flashing details, starter strips, joint treatment, and clearances all have to be done correctly, and those details are more forgiving in a dry climate than they are here. A crew that works in Whatcom County regularly knows to build in the margins this climate demands — proper drainage planes, correct fastener patterns, and attention to the transitions where water actually gets in. That local familiarity, paired with a material engineered for this specific moisture zone, is what keeps a paint-your-once-and-forget-it project from turning into a recurring maintenance headache.
Get a Free Estimate
If you're in Custer and dealing with tired siding, moss buildup, or you're just planning ahead for a home that can handle Whatcom County's weather without constant upkeep, we're happy to take a look. Estimates are free and there's no pressure — just an honest assessment of what your home needs.