Bellingham Cedar Has a Real Place in Bellingham's Architecture
Before we explain why we don't install it, it's worth saying plainly: cedar siding earns its reputation. It's a beautiful, genuinely Pacific Northwest material, and it shows up on some of the best-looking homes in Whatcom County, from craftsman bungalows near Fairhaven to cabins tucked into the trees out toward Lake Whatcom. Cedar takes stain well, weathers into a warm silver-gray if left natural, and has a texture and warmth that manufactured products spend a lot of engineering trying to replicate. None of what follows is an argument that cedar is a bad material. It's an argument about what cedar actually costs a homeowner in time, money, and attention once it's on the wall — especially on a wall that faces Bellingham Bay.
What Cedar Siding Actually Asks of an Owner
Cedar is a natural wood product, and wood moves, absorbs water, and breaks down under UV and moisture exposure unless it's protected and re-protected on a schedule. That schedule is the part most homeowners underestimate when they're comparing siding options on price or looks alone.
The Recurring Work
- Re-staining or re-sealing every 3 to 5 years, sooner on south- and west-facing walls that take direct sun and rain
- Caulking inspection and touch-up annually, since cedar boards expand and contract with moisture and temperature swings
- Washing to remove mildew, moss, and pollen buildup, typically once or twice a year in a climate like ours
- Spot-priming and sealing any cut ends, nail holes, or scratches as soon as they happen, not "next season"
- Watching for and replacing individual boards that split, cup, or rot before the damage spreads to sheathing
Skip any one of these for a couple of years and cedar doesn't just look tired — it starts failing in ways that are expensive to fix, because by the time you can see the problem from the ground, moisture has usually already gotten behind the board.
Why Whatcom County's Climate Is Especially Hard on Cedar
Every siding material has to deal with weather, but Bellingham's specific combination of conditions is close to a worst case for a natural wood product.
Salt Air Off the Bay
Homes anywhere near Bellingham Bay, Chuckanut Drive, or the marine shoreline deal with salt-laden air that accelerates corrosion on fasteners and hardware. Cedar siding relies on nails or screws staying tight and rust-free for decades — once fasteners start corroding and weeping rust stains, or backing out as the wood swells and shrinks, water finds a way in around them.
Driving, Wind-Driven Rain
Whatcom County doesn't just get a lot of rain, it gets rain pushed sideways off the Sound during winter storms. Driving rain finds every gap, lap joint, and end cut in a wood siding system, which is exactly where cedar is most vulnerable if the finish has worn thin or a joint has opened up.
A Long, Genuine Moss Season
Between the shade from mature evergreens common on Whatcom County lots and months of damp, mild weather, moss and algae growth on north-facing and shaded walls is close to unavoidable without regular cleaning. Moss holds moisture directly against the wood surface long after a storm passes, which is one of the more common ways we see cedar siding start to rot from the outside in, not just at the seams.
None of this means cedar "fails" on every Bellingham home. Plenty of well-maintained cedar siding looks great for decades. It means the maintenance schedule above isn't optional here — it's the price of keeping the material ahead of the climate, and it's a price paid in ongoing labor and cost, not a one-time upgrade.
The Moisture Problem Underneath
The most expensive cedar problems aren't cosmetic — they're structural, and they're usually invisible until they're advanced. Wood siding that isn't back-primed, or that loses its finish on the back side over time, absorbs moisture from behind as readily as from the front. Combine that with our rain volume and the shaded, damp microclimates common on wooded Whatcom County lots, and you get slow rot at butt joints, board bottoms, and anywhere trim meets siding. By the time cupping or soft spots are visible from the ground, there's a reasonable chance the sheathing behind those boards has already taken on moisture damage that costs far more to repair than the siding itself.
What This Actually Costs Over Time
Sticker price on the siding material itself only tells part of the story. What matters to a homeowner is the total cost of ownership over the 25-to-30-year window most people plan around when they replace siding.
| Factor | Cedar Siding | James Hardie Fiber Cement |
|---|---|---|
| Refinishing schedule | Every 3-5 years | ColorPlus factory finish rated 15 years, no field painting required for most homeowners |
| Annual cleaning | Recommended, especially shaded/north walls | Occasional rinse, not moisture-sensitive |
| Fastener corrosion risk (salt air) | Elevated near the Bay/Sound | Low with correct corrosion-resistant fasteners |
| Moss/algae vulnerability | High in shaded, damp locations | Low; fiber cement doesn't feed rot |
| Combustibility | Combustible | Non-combustible |
| Typical warranty structure | Varies by installer/finish, often shorter and workmanship-dependent | Manufacturer-backed, transferable, long-term |
The gap isn't in the first year. It's in year eight, when a cedar-clad home is due for another full re-stain and a Hardie-clad home isn't.
Fire Risk and Insurance Are Part of the Real Conversation
Wood siding is a combustible material, and that matters more with every passing wildfire season in the Pacific Northwest, even in a coastal county like Whatcom that isn't classic fire country. Some insurers offer better terms for non-combustible exterior cladding, and it's a factor worth asking your carrier about directly rather than assuming either way. It's not the deciding factor for most homeowners, but it's a real, practical difference between wood and fiber cement that belongs in the decision alongside maintenance and appearance.
Where Cedar Still Makes Sense
We're not going to pretend cedar has no place. As an accent — gable ends, entry surrounds, a feature wall under generous eave protection — cedar can be maintained on a smaller, more manageable scale, and the upkeep burden is proportional to the small area involved. The problem is full-elevation cedar siding exposed to weather on every side of a house, with no practical way to stay ahead of the maintenance schedule year after year. That's the scenario where we think homeowners are signing up for more than they realize.
Why We Install James Hardie Instead
We standardized on James Hardie fiber cement siding for every full re-side we do, and it comes down to matching the material to this specific climate rather than to a national average. Hardie's HZ5 product line is engineered for climates that see significant moisture exposure, which describes Whatcom County well. The ColorPlus factory finish is baked on under controlled conditions, not brushed on in the field, and it's built to resist the fading, cracking, and peeling that field-applied finishes struggle with here. Fiber cement doesn't feed moss or mildew growth the way organic wood fiber does, it isn't a food source for rot, and it holds paint and caulk lines the way it was engineered to rather than fighting seasonal wood movement. It's non-combustible, and it carries a strong, transferable manufacturer warranty when installed to spec — which is the other half of the equation. Fiber cement installed wrong can still have problems; correct flashing, fastening, and joint treatment matter on any siding system, cedar or Hardie. We install it to manufacturer spec because that's the only way the warranty and the performance actually hold up over the decades this material is designed to last.
A Practical Way to Compare Before You Decide
- Ask what the realistic refinishing interval is for the product on your specific wall exposures, not the best-case scenario
- Ask what happens to the warranty if the finish isn't maintained on schedule
- Ask how the material has performed on homes near the water or under heavy tree cover in your own neighborhood
- Ask what corrosion-resistant fastener and flashing details are actually being used, not just assumed
- Get a straight answer on total cost over 20-30 years, not just the installed price today
If you're weighing cedar against fiber cement for a home in Bellingham or anywhere else in Whatcom County, we're happy to walk your specific house — its exposure, its shade, its distance from the water — and give you a straight, no-pressure estimate on what a Hardie re-side would actually involve and cost.