In a climate as consistently wet as ours, fiber cement is the better default choice for most homes in Bellingham, Ferndale, Lynden, Blaine and Birch Bay. It shrugs off the moisture, moss and algae that our long rainy stretches produce, and it holds paint far longer than wood. Cedar still has a real place here, though — on homes where the owner values the natural grain and warmth of real wood over decades-long low maintenance, and is willing to keep up with the finish schedule that wood siding demands in a marine climate. Neither product is wrong; they're built for different priorities.
Fiber cement is a blend of cement, sand and cellulose fiber, pressed into planks or panels and factory-primed or pre-finished. It doesn't rot, and it isn't a food source for the moss and algae that colonize damp, shaded siding on the north and west walls of homes near the water in Blaine and Birch Bay. Because it's dimensionally stable, it holds a straight reveal even after years of rain-soak-and-dry cycles, and factory finishes are formulated to resist the mildew growth that shows up on wood surfaces that stay damp for days at a time in a Whatcom County winter.
The tradeoffs are real, though. Fiber cement is heavy, so installation is more labor-intensive and requires more fasteners and more careful flashing details around windows and doors to keep wind-driven rain off the bay from finding its way behind the cladding. It also has to be cut with dust-controlled tools because of the silica content, which most reputable siding crews already handle correctly, but it's worth asking about. And while pre-finished color options have improved, it doesn't have the natural wood grain and depth that some owners specifically want on a Craftsman or farmhouse-style home.
Western red cedar is a Pacific Northwest classic for a reason — it's naturally resistant to decay, machines cleanly into bevel, shiplap or shingle profiles, and takes stain or paint in a way that shows off real wood grain instead of an embossed texture. On the right home, it's genuinely beautiful, and there's a long tradition of cedar siding across Whatcom County that some owners simply prefer to continue.
The honest drawback is maintenance. Cedar's natural rot resistance is a property of the heartwood; sapwood, end grain, and any spot where the finish has worn through are all vulnerable to moisture intrusion, and our region's persistent rain gives wood far more days of sustained dampness per year than a drier climate would. That means recoating on a real schedule — typically every few years for stain, longer for quality paint systems — plus regular attention to caulking, flashing and any area where two boards meet. Skip that maintenance in a wet year or two and you start seeing checking, cupping or soft spots, especially on north-facing walls that don't get much sun to dry out between storms. Cedar also tends to host moss and algae growth faster than fiber cement in shaded, low-airflow spots, which some owners find themselves pressure-washing or treating annually.
Cost. Material and installation costs vary a lot by profile, finish and the condition of the wall behind the old siding, so we won't invent numbers here — but as a general pattern, cedar's material cost is often lower up front, while fiber cement's higher material and labor cost is offset over time by lower repainting and repair frequency. The real cost comparison only makes sense over a 15-20 year horizon, not at the time of installation.
Lifespan. Properly maintained cedar can last decades, but properly maintained is doing a lot of work in that phrase in a climate that gives wood so many wet days per year. Fiber cement's lifespan is less dependent on the owner's follow-through — it's more forgiving if a recoat gets pushed back a year or two, which matters for rental properties or owners who travel.
Maintenance. This is the clearest split. Cedar wants inspection and refinishing on a schedule, attention to caulk lines, and periodic moss and algae treatment. Fiber cement mainly wants an occasional gentle wash and a repaint on a much longer cycle, since factory finishes are formulated for UV and moisture exposure from the start.
Appearance. Cedar wins on authenticity if what you want is real wood grain and the way it ages and weathers. Fiber cement has closed most of the visual gap with embossed wood-grain and smooth panel options, and it holds a crisp painted look longer, but a trained eye can usually tell the difference up close.
For most projects Alpine Exteriors quotes across Whatcom County, we lean toward fiber cement, and the reasoning is regional. The combination of persistent rain, marine humidity, and wind-driven rain off Bellingham Bay and the Strait near Blaine and Birch Bay puts real stress on any wood-based cladding, and wood rot from missed maintenance is one of the most common repair calls we get on older homes. Fiber cement also pairs well with the continuous exterior insulation and air-sealing details that Washington State's energy code increasingly expects on re-sides, since it installs cleanly over rigid foam and doesn't add its own moisture-management complications to that assembly.
That said, we still install and repair cedar for owners who want it, particularly as an accent — porch gables, entry features, or dormers — where the maintenance burden is smaller and the visual payoff is high. If you already have well-maintained cedar and it's serving you fine, there's no reason to rip it out preemptively; the honest move is often targeted repair and a fresh finish rather than a full re-side. Alpine Exteriors can walk your specific walls, note which sides take the worst weather, and tell you plainly whether repair, partial replacement or a full switch to fiber cement makes sense for your house.
Does fiber cement need to be painted? Most fiber cement siding comes factory-primed or pre-finished, but it still needs periodic repainting — just on a much longer cycle than bare or stained cedar, since the factory finish is engineered for long-term UV and moisture exposure.
Will moss keep growing on fiber cement the way it does on my cedar? Less so. Moss and algae need organic material and consistent moisture to establish, and fiber cement is a poor food source compared to wood. Shaded, low-airflow walls can still develop some growth over years, but it's typically slower and easier to wash off than on cedar.
Can I mix cedar accents with fiber cement field siding? Yes, and it's a common approach — cedar on gables, entry surrounds or shingle accents with fiber cement as the primary field material, which limits the high-maintenance wood area to spots that are easy to inspect and refinish.
Is cedar a bad choice for a house near the water in Blaine or Birch Bay? It's not disqualifying, but wind-driven rain and salt-laden air push moisture into seams and end grain faster there, so cedar on those homes needs a tighter maintenance schedule and careful flashing at every joint.
The right siding choice depends on your walls' sun exposure, your home's exact location relative to wind and rain direction, and how much maintenance you actually want to sign up for. Alpine Exteriors serves Bellingham, Ferndale, Lynden, Blaine and Birch Bay and can walk your home in person, point out where moisture is already a problem, and give you a straight comparison for your specific situation. Reach out to schedule a walkthrough and get a plan that fits your house and your climate, not a generic recommendation.