Blaine Exterior Exterior Work Built for Ferndale's Climate
Ferndale sits close enough to the water and to the open farmland of Whatcom County that its homes take a real beating from the weather, year in and year out. Salt-laden air drifts in off the Strait of Georgia and Birch Bay, driving rain comes through sideways for months at a time, and the shaded, damp conditions common in this part of the county keep moss and algae growing on roofs and siding longer than almost anywhere else in the state. Blaine Exterior Co has worked on homes throughout this area long enough to know that generic exterior products and generic installation habits don't hold up here. What works in a dry climate doesn't necessarily work fifteen minutes from the water in Whatcom County.
What Ferndale Homes Actually Face
A few conditions show up again and again on homes in and around Ferndale:
- Salt air corrosion: Metal fasteners, flashing, and trim take longer to fail here than inland, and once corrosion starts on fasteners behind siding, it's a hidden problem until paint starts bubbling or panels start separating.
- Sustained wind-driven rain: Storms coming off the water don't just fall straight down — they drive moisture sideways into seams, laps, and any gap in flashing. Water management at every joint matters more here than in a typical inland neighborhood.
- Extended moss and algae season: Shade, moisture, and mild temperatures mean moss gets a long growing season on north-facing roof slopes and siding that doesn't get much sun. Left alone, it holds moisture against the surface and accelerates wear.
- Freeze-thaw swings: Whatcom County gets enough cold snaps that any water trapped behind or inside a wall assembly can freeze, expand, and do real damage over a few seasons.
Siding: Why We Only Install James Hardie
Blaine Exterior Co installs James Hardie fiber cement siding exclusively — we don't install vinyl, LP SmartSide, cedar, primed spruce, or other fiber cement brands. That's a deliberate standard, not a marketing line. In a climate like Ferndale's, siding has to hold up to constant moisture cycling, salt exposure, and long stretches without a real drying-out period. Wood-based and engineered-wood products are vulnerable to swelling, delamination, and rot when moisture gets past the surface finish, and vinyl can warp or fade under the combination of coastal humidity and UV exposure over the years.
James Hardie fiber cement is non-combustible and dimensionally stable, meaning it doesn't expand and contract the way wood-based products do when it gets wet and dries out repeatedly. The ColorPlus factory finish is baked on under controlled conditions, which holds up better against salt air and driving rain than field-applied paint. Hardie's HZ5 product line in particular is engineered for cold, wet climates like ours, and the color and texture options let us match the look homeowners want in Ferndale's mix of established neighborhoods and newer construction without giving up the performance the climate demands.
Roofing, Windows, and Decks — Same Standard
Siding is only part of the exterior envelope. Roofing in this area needs proper attention to moss-resistant materials, ventilation, and flashing details around valleys and penetrations — the spots where wind-driven rain finds its way in first. Windows need to be installed with correct flashing and sealing so that the same rain that tests siding doesn't find a path around the frame. Decks built in a climate this wet need materials and fastening details that account for near-constant moisture exposure rather than the occasional rain shower.
We treat all four of these — siding, roofing, windows, and decks — as one connected system. A roof that sheds water perfectly but dumps it against poorly flashed siding just moves the problem, not solves it.
Why a Local Crew Matters
Ferndale isn't identical to Blaine, and Blaine isn't identical to Bellingham or the rest of Whatcom County — microclimates along this stretch of coastline vary block to block depending on exposure to wind, water, and tree cover. A crew that works this specific area regularly understands where moss tends to build up fastest, which sides of a house take the worst of the wind-driven rain, and how much drying time to expect between storms during installation. That local knowledge shows up in the small decisions — flashing details, fastener choices, sequencing around weather windows — that determine whether an exterior actually performs over the next twenty or thirty years or just looks good on installation day.
Get a Free, No-Pressure Estimate
If you're noticing moss buildup, worn siding, or drafts around windows on your Ferndale home, we're happy to take a look and walk you through what we're seeing and what your options are — no pressure, no obligation. Reach out below to schedule a free estimate.