Bellingham Siding Cedar Has Real Appeal — We Get It
Cedar siding shows up on a lot of wish lists in Bellingham, and it's not hard to understand why. It's a genuinely beautiful material — warm color, visible grain, a natural look that fits the Pacific Northwest aesthetic better than almost anything manufactured. Homeowners restoring a craftsman bungalow near Fairhaven or building a new place with mountain and water views often come to us specifically asking about cedar. We're not going to pretend the material doesn't deserve that reputation.
But there's a difference between a material that looks right in a photo and a material that performs well for twenty or thirty years on a house that sits eight miles from Bellingham Bay, under a marine layer that rolls in most mornings and doesn't fully burn off some days until afternoon. That's the gap this page is about — not whether cedar is a "bad" product, but what it actually demands from a homeowner once it's on the wall, and why we've made the call not to install it.
What Cedar Siding Actually Requires Once It's Installed
The Refinishing Cycle
Cedar is wood, and wood siding needs a protective finish — stain, paint, or a clear/semi-transparent sealer — reapplied on a schedule, not "if it starts looking rough." In a dry inland climate that cycle might stretch to seven or eight years. In Whatcom County, with our rain totals and humidity, most cedar installations need refinishing every three to five years to keep water out of the wood, and that window shrinks further on south and west-facing walls that take the brunt of driving rain off the Sound.
Caulking, Joints, and Fasteners
Every board joint, corner, and nail head on a cedar installation is a place water can get behind the finish. Caulking dries out and cracks faster here than in drier regions, and once it fails, moisture starts working into end grain — which is exactly where wood siding rots first. Staying ahead of this means annual inspection, not a one-time install-and-forget.
Who Actually Does the Maintenance
This is the part that catches people off guard. Refinishing cedar siding on a two-story house isn't a weekend DIY project for most homeowners — it means renting or buying scaffolding or lift equipment, proper prep (pressure washing, sanding down failed finish, spot-treating mildew), and correct application in a dry weather window, which in Bellingham can be hard to find for more than a few consecutive days outside of summer.
Bellingham's Climate Is Working Against Wood Siding
Three things about our specific location make cedar maintenance heavier here than in a lot of other places cedar gets installed:
- Salt air: Homes closer to Bellingham Bay and the Whatcom County shoreline deal with airborne salt that accelerates finish breakdown and can contribute to fastener corrosion over time.
- Driving rain: Storms off the Strait of Georgia don't just fall straight down — wind-driven rain hits siding at an angle and finds every gap in caulking or lap coverage that a calmer climate would never test.
- A long moss season: Between fall and spring, shaded, damp exterior walls — especially north-facing walls under mature trees, common on older Bellingham lots — stay wet for extended stretches, which is exactly the environment moss, algae, and mildew need to take hold on wood surfaces.
None of this means cedar "fails" here. It means the maintenance schedule that keeps cedar looking good and structurally sound is more demanding in Whatcom County than the marketing photos or the lumber yard sales pitch usually let on.
Moss and Mildew: The Part Nobody Budgets For
Moss doesn't just grow on roofs in this region — it takes hold on shaded siding too, particularly in older, tree-covered neighborhoods around Bellingham where walls stay damp for days at a time in the wet months. On wood siding, moss and algae aren't just a cosmetic problem. They hold moisture directly against the wood surface, which keeps the substrate wetter for longer and works against whatever finish is trying to protect it. Homeowners end up needing periodic soft-washing or treatment just to keep growth from establishing, on top of the refinishing cycle already mentioned. It's an extra maintenance line item that's easy to underestimate when you're comparing cedar to other siding options on price alone.
Where Installation Sensitivity Becomes a Long-Term Problem
Cedar siding is also less forgiving of installation shortcuts than a lot of homeowners realize. Proper cedar installation depends on details that are easy to skip and hard to inspect after the fact: back-priming every board on all six sides before it goes up, correct rainscreen or drainage gap behind the siding, proper flashing at every horizontal joint, and fastener placement that avoids splitting and doesn't trap moisture. Skip back-priming — which happens more often than it should on cost-driven jobs — and you've got a board that's protected on the visible face but absorbing moisture from behind, where nobody sees it until paint starts bubbling or a board goes soft.
Because these failures happen from the inside out, by the time they're visible from the street, the damage is often already done. That's a real risk for a homeowner who did nothing wrong except hire a crew that rushed the parts of the job nobody checks.
The Cost Picture Over Time
Upfront material cost is only part of the comparison. What matters more for a homeowner planning to stay in their house is total cost of ownership over the life of the siding — and that's where cedar's numbers change shape.
| Factor | Cedar Siding | James Hardie Fiber Cement |
|---|---|---|
| Refinishing cycle (Bellingham climate) | Every 3-5 years | ColorPlus factory finish holds far longer; no full refinish cycle in the same sense |
| Moss/mildew maintenance | Periodic cleaning and treatment needed, especially shaded walls | Cement substrate doesn't feed rot; cleaning is cosmetic, not structural |
| Combustibility | Combustible — a real consideration given regional wildfire smoke seasons and insurance underwriting trends | Non-combustible fiber cement |
| Moisture failure mode | Rot, warping, board splitting if finish/flashing fails | Engineered to resist moisture-driven damage when installed to spec |
| Warranty | Typically material-only, workmanship separate | Long-term, transferable manufacturer warranty on the product |
None of these numbers are meant to shame cedar. They're meant to show why "cheaper up front" and "cheaper over 20 years" aren't the same claim in this climate.
Why We Standardized on James Hardie
We stopped installing cedar, LP SmartSide, vinyl, and other wood or wood-composite sidings for the same core reason: we're the ones putting our name on the installation, and we didn't want to keep sending crews back out to Bellingham and Whatcom County homes to fix moisture damage that a different substrate wouldn't have developed in the first place.
James Hardie fiber cement is engineered specifically for this kind of climate — the HZ10 product line is formulated for wet, cold-cycling regions like ours. It's non-combustible, which matters more every year as regional wildfire seasons intensify insurance scrutiny on exterior materials. The ColorPlus factory-applied finish is baked on under controlled conditions rather than field-applied by hand in whatever weather window is available, and it comes with a long, transferable warranty that isn't split between "material" and "labor" the way a lot of wood siding warranties end up being in practice. When installed to Hardie's spec — correct fastening, proper clearances, flashing detail — it holds its look and its integrity with a fraction of the maintenance cedar demands here.
Is Cedar Still an Option for Your Project?
If you've read all of this and still want cedar — for a specific architectural style, an accent area, or a restoration project where matching original material matters — that's a legitimate call, and it's yours to make. We just won't be the contractor installing it, for the reasons above. Before you decide, it's worth being honest with yourself about a few things:
- Are you planning to stay in the home long enough to be the one managing a 3-5 year refinishing cycle?
- Is your property shaded, tree-covered, or close to the water — the conditions where moss, mildew, and moisture problems show up first?
- Do you have the budget set aside for periodic refinishing and inspection, not just the install itself?
- Have you priced out professional refinishing labor in Bellingham, or are you assuming you'll DIY it every few years?
- Does your homeowner's insurance carrier factor combustible siding into premiums in your area?
- Would a non-combustible, factory-finished alternative meet the same design goals with less long-term upkeep?
If the honest answers point toward "I don't want to sign up for that maintenance schedule," that's exactly the conversation we have with homeowners every week — and it's usually where James Hardie fiber cement becomes the more practical choice without giving up much on appearance.
Let's Talk About What's Right for Your Home
Every house and every lot in Whatcom County sits a little differently — sun exposure, tree cover, distance from the water, and existing siding condition all change the calculation. We're happy to walk your property, point out what we're actually seeing, and give you a straight answer about what will hold up. If you'd like a free, no-pressure estimate on a James Hardie siding install for your Bellingham home, the form below is the fastest way to get started.