Bellingham Siding Cedar siding has a long history in Whatcom County. It's a native wood, it's handsome, it smells good on a warm afternoon, and it's been the default choice on Pacific Northwest homes for generations. If you're weighing cedar for a Bellingham home, you deserve a straight answer about what owning it actually involves here — not a sales pitch and not a scare story. This page is about the maintenance reality of cedar in our specific climate, and why our company made the decision years ago to stop installing it.
What Cedar Gets Right
We'll start with the honest case for cedar, because it's a real one. Western red cedar is naturally resistant to decay and insects due to oils in the wood, it's a renewable material, and it has a warmth and texture that manufactured products spend a lot of engineering trying to replicate. Properly milled and installed, a cedar exterior can look better than almost anything else on the market for its first several years. None of what follows is a knock on the wood itself. It's a statement about what it takes to keep that look and performance going on a house in Bellingham, year after year, and what happens when that upkeep slips.
The Climate Problem Is Specific to Here
Cedar performs differently in Bellingham than it does in a dry inland climate, and the difference comes down to three things stacking on top of each other for most of the year.
Salt Air and Marine Moisture
Homes closer to Bellingham Bay and the Whatcom County shoreline deal with a steady low-grade exposure to salt-laden air. That moisture works its way into wood fiber and finish coatings faster than inland exposure does, which shortens the interval between refinishing jobs whether you notice it or not.
Driving Rain
Our weather doesn't just rain — it rains sideways often enough that wall assemblies facing southwest and west take real wind-driven wetting. Cedar lap siding depends on its finish and its back-ventilation to shed that water. When either one falls behind, the wood absorbs moisture faster than it dries out between storms.
The Moss Season
Whatcom County's moss and algae season runs long — realistically most of the year on shaded, north-facing, or tree-covered walls. Moss and algae hold moisture directly against the wood surface. On cedar, that sustained dampness is exactly the condition that breaks down finish coatings and, eventually, the wood underneath.
What Ongoing Cedar Maintenance Actually Looks Like
This is the part that matters most for a buying decision, because it's the part that's easy to underestimate before you own it.
- Refinishing (stain or paint, depending on the original finish) on a recurring cycle — typically every 3 to 7 years depending on exposure, sun, and finish type, with shaded and rain-facing walls needing it sooner
- Annual inspection for finish breakdown, checking, cupping, and any spots where boards have started to gray unevenly
- Regular moss and algae removal from siding surfaces, not just the roof — soft-washing rather than pressure-washing, which can force water behind boards
- Caulk and sealant checks at butt joints, corners, and trim intersections at least once a year
- Prompt replacement of any board showing soft spots, cupping, or rot before it spreads to fasteners and sheathing
- Keeping vegetation and irrigation spray pulled back from walls so foliage isn't holding moisture against the siding
None of these tasks are unreasonable on their own. The issue is that they're recurring, they're weather-dependent (you can't refinish siding in the middle of our wet season), and they compound. Skip one refinishing cycle because of a busy year or a rainy summer with no dry stretch, and the next cycle costs more because you're now dealing with finish failure, not just finish fading.
Where Cedar Problems Actually Start
In our experience looking at siding across Whatcom County, cedar rarely fails all at once. It fails at predictable weak points first:
- Lower courses near grade, decks, and downspout splash zones, where moisture exposure is constant
- North and shaded walls where moss establishes and the wood never fully dries
- Butt joints and end grain, where cut edges soak up water far faster than the face of the board
- Nail heads and fastener lines, where finish wears thin first and rust staining or splitting can start
Once moisture gets past the finish at these points, cedar doesn't give much warning before it starts to soften. By the time cupping, graying, or soft spots are visible from the ground, the affected boards usually need replacement, not just refinishing.
Cost Factors Over Time
Cedar's upfront material cost is often competitive with, or even less than, quality fiber cement. The real cost comparison only shows up when you look at the full ownership period.
| Factor | Cedar Siding | James Hardie Fiber Cement |
|---|---|---|
| Factory finish | Field-applied stain or paint; wears per exposure | ColorPlus factory finish backed by its own warranty |
| Refinishing cycle | Roughly every 3-7 years depending on exposure | Not required for ColorPlus-finished product |
| Moss/algae sensitivity | High — holds moisture against wood | Low — fiber cement doesn't feed rot the way wood does |
| Combustibility | Combustible wood product | Non-combustible core material |
| Typical manufacturer warranty | Varies; often limited or none on the wood itself | Long-term transferable limited warranty |
| Board replacement due to rot | Ongoing risk at grade, joints, and shaded walls | Not a wood-rot failure mode |
The table isn't meant to say cedar is a bad product — it's meant to show where the money actually goes over 15 or 20 years of ownership. Cedar's costs are spread out and recurring; Hardie's costs are mostly upfront and then largely off the homeowner's plate.
Why Installation Sensitivity Matters
Cedar is also less forgiving of installation shortcuts than people expect. Back-priming (sealing the hidden face of every board before installation), proper rain-screen gap and ventilation behind the siding, correct fastener choice to avoid rust staining, and tight, well-sealed end joints all matter enormously for how long a cedar exterior performs in our climate. Skip any of those steps — which happens more often than homeowners realize, since they're invisible once the wall is closed up — and you've shortened the siding's service life before the first coat of stain even goes on. We'd rather not install a product where a huge share of its long-term performance depends on installation details that are easy to shortcut and impossible to verify afterward.
Why We Install James Hardie Instead
We made the decision to specialize in James Hardie fiber cement siding rather than offer cedar, LP SmartSide, vinyl, or other wood and composite products. It comes down to matching the product to what actually holds up through a Bellingham winter and a Bellingham moss season without asking the homeowner to manage a maintenance calendar.
James Hardie's fiber cement core doesn't feed rot the way wood does, and it isn't a fuel source the way wood siding is. The HZ5 product line is specifically engineered for wetter, harsher climates like ours. The ColorPlus factory finish is baked on under controlled conditions rather than applied on-site in whatever weather window is available, and it carries its own warranty coverage separate from the substrate warranty. For a homeowner, that combination means the siding is doing the weathering, not the homeowner doing the maintenance.
We're not saying cedar can't be done well — it can, with disciplined maintenance and correct installation. We're saying that after years of working on homes across Whatcom County, we decided our name only goes on installations we're confident will still look right in fifteen years with ordinary care, not diligent upkeep. Hardie is the product that lets us make that commitment.
Questions Worth Asking Before You Decide
Whatever siding you choose, a few questions will tell you a lot about whether it's the right fit for your home and your tolerance for upkeep:
- How much sun and rain exposure does each wall of my house actually get, and are any walls shaded most of the day?
- Am I realistically going to schedule and pay for refinishing on a recurring cycle, or would I rather that cost be built into the material once?
- Does my insurance or my own risk tolerance care about combustibility?
- How close is my home to the water, and how much does salt exposure factor into my choice?
- What warranty actually transfers if I sell the house in ten years?
If you're weighing your siding options for a Bellingham home, we're happy to walk your property with you, point out the exposure and moisture factors specific to your walls, and give you a straightforward estimate — no pressure, no obligation.