Lynden Siding Siding Built for Custer's Coastal Exposure
Custer sits close enough to the water and open farmland north of Lynden that homes here take a different kind of beating than houses tucked further inland in Whatcom County. Salt-laden air off the Strait, wind-driven rain that comes in sideways during winter storms, and long stretches of gray, damp weather where moss and algae never really stop growing all add up. Siding in this area doesn't just need to look good on installation day — it needs to hold up through decades of that cycle without trapping moisture or breaking down at the seams.
We install James Hardie fiber cement siding exclusively. That's not a marketing angle — it's a decision we made after years of watching how different siding materials actually perform in Whatcom County conditions, and it's why homeowners in Custer call us specifically for Hardie installation rather than a general contractor who installs whatever's cheapest that month.
What Custer Homes Are Up Against
A few things show up consistently on homes in this part of the county:
- Salt air corrosion: Proximity to the water means airborne salt settles on exterior surfaces and accelerates the breakdown of fasteners, coatings, and lower-grade siding materials over time.
- Driving rain: Open exposure with fewer windbreaks than you'd find in a denser neighborhood means rain gets pushed into laps, seams, and trim joints that would stay dry in more sheltered spots.
- Extended moss season: Cooler, wetter months here stretch long, and north-facing walls or shaded elevations can stay damp for weeks at a time, which is exactly the environment moss and algae need to establish themselves on siding surfaces.
- Wind exposure: Custer's more open terrain means siding and trim take more direct wind load than a home surrounded by mature trees or tightly packed structures.
Why We Only Install James Hardie
We used to install other siding products. We don't anymore, and the reasons come down to how materials actually behave in this climate over 10, 20, and 30 years — not just how they look going up.
James Hardie fiber cement is non-combustible and dimensionally stable, meaning it doesn't expand, contract, warp, or absorb water the way wood-based or wood-adjacent products can. Its ColorPlus factory-applied finish is baked on under controlled conditions, which gives it far better resistance to fading and moisture intrusion at the surface than field-applied paint. For a location dealing with salt air and constant damp, that combination matters more than it does in a drier climate.
Hardie also engineers specific product lines (their HZ5 line, for example) for regions that see more moisture and temperature swing, which lines up well with what a place like Custer actually experiences. And because Hardie backs its products with a strong, transferable warranty when installed to their specifications, homeowners get real protection — not just a manufacturer claim that sounds good on a brochure.
None of this means other siding products are without merit. Vinyl is inexpensive and low-maintenance in some regards; engineered wood products have their own advantages. But we made a professional call to standardize on one material we trust to perform correctly here, install correctly every time, and back with a warranty that holds up. That's the whole reason we don't offer a menu of siding options — we'd rather do one thing right than several things adequately.
Installation Details That Matter Here
Fiber cement siding is only as good as the installation behind it, and that's especially true in a climate like Custer's. Correct installation includes:
- Proper water-resistive barrier and flashing details at every window, door, and penetration so wind-driven rain has nowhere to get behind the siding
- Correct fastener spacing and clearance per Hardie's specifications, which affects both wind performance and long-term durability
- Adequate ground clearance and drainage planning so the bottom courses aren't sitting in standing moisture
- Attention to caulking and joint treatment at trim boards, since gaps are where moss and algae growth tends to start first
These aren't optional extras — they're the difference between siding that lasts and siding that needs attention again in a few years.
More Than Siding
We also handle roofing, windows, and decks, which matters in Custer because these systems don't work in isolation. Flashing at a roofline ties directly into how siding sheds water above it; window installation quality affects how much moisture ever reaches the wall assembly behind your siding in the first place. A crew that understands how all four systems interact tends to catch problems that a siding-only installer might miss, and it means one point of contact if you're tackling more than one part of your exterior at once.
Working With a Local Crew
Being based near Lynden means we've seen how Whatcom County's specific mix of coastal exposure, farmland wind, and long wet seasons plays out on real homes, not just in a training manual. That local knowledge shapes decisions on the job — where extra flashing attention is warranted, which elevations need more focus on drainage, and what's realistic to expect from a given installation given Custer's particular exposure.
If your Custer home's siding is showing its age, or you're planning ahead for a replacement, we're happy to take a look and talk through what we're seeing. Reach out for a free, no-pressure estimate — there's no obligation, just an honest assessment of where things stand.