Fairhaven Siding Siding Built for Sehome's Marine Climate
Sehome sits close enough to Bellingham Bay that salt-laden air is a fact of daily life, not an occasional nuisance. Combine that with the driving rain that rolls in off the water most of the year and the long stretch of damp, low-light months that let moss and algae get a foothold on north-facing walls and roof lines, and you've got a exterior envelope that's under more or less constant pressure. Homes in this neighborhood, many of them older and built before fiber cement was the standard, show the wear in predictable ways: paint that chalks and peels faster than it should, trim that stays soft to the touch after a wet winter, and green-black staining that keeps coming back no matter how many times it's pressure washed off.
Fairhaven Siding Company works this part of Whatcom County regularly, and Sehome's mix of older single-family homes and closer-in lots near Western Washington University gives us a good read on how different exteriors actually hold up here over time — not in a lab, but on real walls exposed to real Pacific Northwest weather.
Why We Only Install James Hardie
We made a deliberate decision as a company to install James Hardie fiber cement siding exclusively. We don't install vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar. That's not a marketing angle — it's a standard we hold because of what we've seen happen to other materials in exactly this kind of coastal, wet-winter climate:
- Moisture behavior: Wood-based and engineered wood products can absorb moisture at cut edges and fastener points, and in a climate where things rarely get a chance to fully dry out between rain events, that moisture has nowhere to go. Fiber cement doesn't swell, rot, or delaminate the way wood-based sidings can.
- Salt air exposure: Being this close to the bay means siding is dealing with airborne salt in addition to rain. Hardie's fiber cement composition and factory-applied ColorPlus finish are engineered to hold up to that combination far better than vinyl, which can become brittle, or wood-based products, which are more vulnerable to moisture intrusion at seams and edges.
- Moss and algae resistance: Nothing is moss-proof in this region, but a dense, factory-finished fiber cement surface sheds and resists organic growth better than porous or fibrous substrates, and it stands up to the periodic cleaning needed to keep it looking good.
- Non-combustible: Fiber cement doesn't burn, which matters to us as a standard regardless of the specific wildfire risk in any one neighborhood.
None of the products we chose not to install are bad products across the board — vinyl is affordable and low-maintenance in the right setting, and cedar has real aesthetic appeal. But for the specific combination of salt air, driving rain, and moss pressure that Sehome deals with, we think the trade-offs (maintenance burden, moisture sensitivity, installation tolerances, or shorter effective service life) aren't worth it. James Hardie's HZ10 product line is specifically engineered for climates like ours, and it's backed by a strong transferable warranty when installed to the manufacturer's specifications — which matters more here than in a drier climate, because installation mistakes show up faster in wet, coastal conditions.
What a Local Crew Means for a Sehome Job
Correct installation is what makes the difference between siding that performs for decades and siding that fails early despite being a good product. That means proper flashing and water-resistive barrier detailing, correct fastener placement and spacing, gaps sized for the region's humidity swings, and caulking practices suited to a climate that doesn't get long dry stretches to cure things properly. A crew that works Whatcom County regularly already knows how local wall assemblies, older housing stock, and moisture patterns behave, and doesn't have to relearn those lessons on your project.
Being local also means we're around after the job is done. If a question comes up during the next wet season, we're not a crew that drove in from out of the area and moved on — we're still working in Sehome, Fairhaven, and the rest of Bellingham.
Beyond Siding: Roofing, Windows, and Decks
Siding rarely fails in isolation. A roof that's letting moisture into the wall assembly, windows with failed seals letting water track down behind the cladding, or a deck ledger that's trapping water against the house can all undermine even a well-installed siding job. We handle roofing, window replacement, and deck work alongside siding so we can look at a home's exterior as one connected system rather than a set of unrelated projects, which matters in a climate where water finds every gap you leave for it.
Common Signs It's Time to Talk to Someone
- Paint that's peeling, bubbling, or chalking well before you'd expect
- Soft or spongy spots on siding or trim, especially near the bottom courses
- Persistent moss, algae, or dark staining that returns quickly after cleaning
- Visible gaps, warping, or separation at seams and corners
- Rising energy bills that suggest the exterior isn't sealing the way it used to
Get a Straightforward Look at Your Home
If you're in Sehome and dealing with any of the wear this climate causes, we're happy to come take a look, walk the exterior with you, and give you an honest read on what's going on and what your options are — no pressure, no obligation. Use the form below to request a free estimate.