Ferndale Exterior Contractor Serving Kendall, Washington
Kendall sits in the rural stretch of Whatcom County between Ferndale and the Mount Baker foothills, where forest canopy, creek-fed moisture, and a long, wet Pacific Northwest winter shape how homes age. Houses out here don't fail because owners neglect them. They fail because the exterior products on them were never built for this specific combination of shade, standing moisture, and salt-tinged marine air that moves inland off the Strait of Georgia and settles into these valleys for months at a time. We've built our business around one answer to that problem: James Hardie fiber cement siding, installed correctly, on every home we touch.
What Kendall's Climate Actually Does to a House
This part of Whatcom County doesn't get dramatic weather. It gets persistent weather, and persistent is what wears siding down. Three things matter most for homes in and around Kendall:
Driving Rain
Rain here rarely falls straight down. Wind off the water pushes it sideways into walls, corners, and window trim, which means siding has to shed water horizontally, not just vertically. Any product with weak seams, absorbent edges, or a finish that isn't fully cured through the material is going to take on moisture at exactly those pressure points.
Salt Air
Kendall is inland, but Whatcom County as a whole sits in a marine air pattern. Salt-bearing air moves up from Bellingham Bay and the Strait of Georgia and works its way into the valleys, carrying moisture and fine salt content that accelerates corrosion on fasteners, trim, and any siding finish that isn't engineered to resist it.
Moss and Shade
Tree cover keeps this area beautiful and keeps siding wet longer than open, sun-exposed lots. Shaded north and east walls stay damp for days after a storm, and that's exactly where moss, algae, and mildew take hold. On wood-based products, that damp surface is an invitation for rot underneath the growth you can see.
None of this is unusual for the region. What it means practically is that siding decisions made for a drier climate, or made purely on upfront cost, tend to show problems here faster than they would somewhere with less rain and less shade.
Why We Standardized on James Hardie
We get asked why we don't offer vinyl, LP SmartSide, or cedar as options. It's a fair question, and the honest answer is that we used to see the callbacks. Vinyl can warp and gap at the seams under sustained wet-dry cycling and doesn't hold color well over time in this light. LP SmartSide is a wood-strand product with an engineered coating, and while the coating works, any breach at a cut edge, fastener hole, or joint exposes wood strand to moisture, and moisture is the one thing this climate has in abundance. Cedar and primed spruce are honest, attractive materials, but they demand a maintenance schedule — recoating, caulking, moss treatment — that most homeowners don't keep up with once the novelty of a new exterior wears off.
James Hardie fiber cement is not wood and it is not vinyl. It's a cement, sand, and cellulose fiber composite that doesn't rot, doesn't feed moss the way organic material does, and is factory-rated non-combustible — a real consideration for homes near wooded lots in the wildfire-aware parts of Whatcom County. It's also engineered for exactly this climate: Hardie's HZ5 product line is formulated for cold, wet, coastal-influenced regions like the Pacific Northwest, which is the zone Whatcom County falls into.
The James Hardie System We Install
| Component | What It Does |
|---|---|
| HardiePlank lap siding | The primary wall covering — available in smooth or cedar-textured finishes |
| HardiePanel / board-and-batten | Vertical siding for accent walls, gables, or a more modern look |
| HardieTrim | Fiber cement trim boards at corners, windows, and fascia — no wood trim rotting against the siding |
| ColorPlus finish | Factory-baked, multi-coat color finish backed by its own finish warranty — not job-site paint |
ColorPlus matters more here than in a drier climate. A field-painted finish depends on ideal application conditions and regular repainting to hold up. A factory finish is cured under controlled conditions before it ever reaches Kendall, and it's engineered to resist the fading and moisture intrusion that a job-site paint job struggles with through wet Northwest winters.
Roofing, Windows, and Decks — One Crew, One Exterior
Siding doesn't work in isolation. On most Kendall homes we're asked to look at, the siding problem is connected to something else on the exterior:
- Roofing: A roof that's shedding granules or backing up at the valleys will send water behind siding at the roofline, no matter how good the siding is.
- Windows: Old aluminum or single-pane windows are a common source of the trim rot we find when we pull old siding off — the window flashing, not the siding, was the original failure point.
- Decks: Ledger boards and rim joists in this climate need the same moisture discipline as siding. A deck attached without proper flashing is a slow leak into the house wall behind it.
We handle all four trades so the flashing, water management, and sequencing between roof, walls, windows, and deck connections is planned as one system instead of four separate contractors hoping their work lines up.
What Correct Installation Looks Like on a Home Like Yours
James Hardie siding performs the way it's rated to only when it's installed to spec. That's not a footnote — it's the difference between a 30-plus-year exterior and a callback in five years. On Kendall jobs, the details we hold the line on include:
- Proper weather-resistive barrier and rainscreen or drainage plane behind the siding, so any moisture that gets past the surface has somewhere to go
- Correct nail placement and fastening pattern per Hardie's installation manual — not shortcuts that void the manufacturer's own warranty
- Factory-mitered or properly caulked joints, especially at window and door trim where driving rain hits hardest
- Clearance between the bottom of the siding and grade, decks, and roof lines, so standing water and splash-back don't sit against the material
- Flashing integration with windows, roof step-flashing, and deck ledgers as one continuous water path, not siding installed around problems left by other trades
Skip any of these and you don't just risk cosmetic issues — you risk moisture getting trapped behind a material that's otherwise excellent at keeping it out.
Why a Local Crew Matters in Kendall
A lot of exterior work in this part of Whatcom County gets scheduled around weather windows, not calendar dates. A crew that works this area regularly knows how much dry-day buffer to plan into a project, understands the shaded, slower-drying sides of a typical Kendall lot, and isn't guessing at how the county's permitting and inspection process works for siding and re-roof jobs. That local knowledge shows up in fewer surprises mid-project and a schedule that actually holds.
It also matters after the job is done. A contractor based in the area is the one you can actually reach if a question comes up two years later — not a call center for a company that did one job in your neighborhood and moved on.
Signs Your Siding Needs a Closer Look
| What You See | What It Usually Means |
|---|---|
| Persistent green or black growth on shaded walls | Moisture is staying on the surface longer than the material can handle |
| Soft spots or visible swelling at seams and corners | Water has gotten past the surface into wood-based substrate |
| Paint peeling in sheets rather than fading evenly | Moisture pressure pushing out from behind the siding, not just UV wear |
| Gaps or warping at panel seams | Material expanding and contracting beyond what the product tolerates |
| Rust streaking below fasteners | Salt-influenced corrosion on the fastener, sometimes the first visible sign of a bigger issue |
Simple Maintenance Checklist for Kendall Homeowners
- Rinse siding and trim once or twice a year, focusing on shaded north- and east-facing walls where moss builds up fastest
- Keep gutters clear so overflow doesn't run down the wall face
- Trim back branches and shrubs that keep siding shaded and damp against the surface
- Walk the exterior after a heavy storm season and look for the warning signs listed above
- Have flashing at windows, rooflines, and deck ledgers checked whenever you're having other exterior work done
If your Kendall home is due for new siding, or you're weighing James Hardie against other options before deciding, we're happy to walk the property with you and give it to you straight. Reach out for a free, no-pressure estimate using the form below.