Blaine Siding Siding Built for Custer's Climate
Custer sits in the northern reach of Whatcom County, close enough to the Salish Sea that salt-laden air is a constant factor for anything installed on the outside of a home, and far enough into the agricultural flats that homes also take on open exposure to wind and driving rain off the water. Add in the long, gray moss season that stretches from fall through spring in this part of Washington, and you have a combination that is genuinely hard on exterior building materials. We've built our siding, roofing, window, and deck work around exactly this kind of exposure.
What Custer Homes Are Up Against
A few things show up again and again on homes in this area:
- Salt air corrosion — proximity to the water accelerates the breakdown of fasteners, trim, and lower-grade siding materials over time.
- Wind-driven rain — open exposure means rain doesn't just fall straight down here, it gets pushed sideways into wall assemblies, seams, and butt joints.
- Persistent moss and algae growth — shaded north faces and anything under tree cover stay damp for months at a stretch, which is exactly the environment moss and mildew need to take hold.
- Freeze-thaw cycling — Whatcom County winters aren't extreme, but repeated freezing and thawing still stresses any siding material that absorbs moisture.
None of this is unique to Custer, but the combination of salt exposure and sustained dampness is more pronounced here than it is further inland, and it's a big part of why we're selective about what we put on a home in this area.
Why We Install James Hardie and Nothing Else
We install James Hardie fiber cement siding exclusively — we don't install vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar. That's a standard we hold ourselves to, not a knock on every homeowner who has one of those products already on their house.
Fiber cement is non-combustible and dimensionally stable, meaning it doesn't expand and contract with moisture the way wood-based products do. That matters directly in a climate like Custer's: wood siding and trim absorb moisture during our wet months and release it during drier stretches, and that cycle is what eventually leads to swelling, cupping, and rot at seams and fastener points. Vinyl handles moisture differently but tends to become brittle with age and UV exposure, and it can't be repainted to refresh its appearance once it fades.
James Hardie's ColorPlus factory-applied finish is baked on under controlled conditions rather than sprayed on-site, which gives it better adhesion and color consistency than field-applied paint, and it holds up well against the kind of salt air and grime buildup that's common this close to the water. Hardie also makes climate-engineered HZ product lines specifically formulated for different moisture and temperature conditions, and the company backs its siding with a strong transferable warranty — which matters if you sell the home down the road.
We're not saying every other product is a bad choice for every homeowner. We're saying that when we looked at what actually holds up over decades in this specific climate, with this specific exposure to salt air, wind-driven rain, and moss, fiber cement from James Hardie is what we were willing to put our name behind.
Roofing, Windows, and Decks in the Same Conditions
Siding isn't the only part of a home dealing with Custer's weather. Roofing takes the brunt of wind-driven rain and needs proper underlayment and flashing detail to keep water out at valleys, penetrations, and eaves. Windows need tight, correctly flashed installation to avoid the slow water intrusion that shows up years later as rot in the framing around them. Decks — especially anything shaded or facing north — deal with the same moss and moisture issues as siding, and material choice and drainage detailing make a real difference in how long they last. We handle all four of these trades, and we think about them together, because on most homes they interact at the same corners, eaves, and transitions.
Why a Local Crew Matters Here
A contractor who mostly works drier, more sheltered parts of the state won't necessarily flash a wall assembly, detail a butt joint, or vent a roof the same way someone who works Whatcom County's coastal exposure every week will. The difference shows up years later, not on installation day — in whether water finds its way behind the siding, whether moss takes over a north-facing wall, or whether fasteners start showing rust streaks. Working this area regularly means we see what actually happens to different products and installation details after a few Custer winters, not just what a spec sheet says should happen.
If you're weighing a siding, roofing, window, or deck project for your Custer home, we're happy to take a look and walk you through what we're seeing and what we'd recommend. Reach out for a free, no-pressure estimate — there's no obligation, just a straight answer about your home's exterior.
