Sudden Valley Siding Cedar Has a Real Appeal — We're Not Going to Pretend Otherwise
Cedar siding looks good. It has a warmth and texture that manufactured products spend a lot of marketing money trying to imitate. Western red cedar is a regional material, it smells the way a lot of people associate with the Pacific Northwest, and a freshly stained cedar home has a character that's hard to argue with. If a homeowner in Sudden Valley tells us they love the look of cedar, we agree with them. That's not the disagreement.
The disagreement is about what it takes to keep that look, year after year, on a home sitting a few miles from Lake Whatcom in a county that gets driving rain for months at a stretch. We install siding for a living, and we've made a business decision not to install cedar. Here's the honest version of why, not a sales pitch dressed up as one.
What Cedar Siding Actually Requires Over Its Lifetime
Cedar is a natural wood product, and wood moves, absorbs moisture, and breaks down under UV and weather exposure unless it's protected and that protection is renewed on a schedule. That's not a defect — it's just what wood does. The obligation falls on the homeowner (or whoever they hire) to keep up with it.
The Recurring Work
- Re-staining or repainting every 3-7 years depending on exposure, sun, and finish quality
- Caulking and re-sealing joints, corners, and butt seams as they open up
- Washing off mildew, moss, and algae growth at least once a year in this climate
- Inspecting and replacing individual boards that split, cup, or rot, especially near grade and roof lines
- Watching for woodpecker and insect damage and repairing entry points promptly
None of this is exotic. It's normal wood maintenance. But it's continuous, and it doesn't pause because a homeowner is busy, out of town, or simply doesn't want to be on a ladder every couple of years.
How Whatcom County's Climate Works Against Cedar
Every siding material has to survive the climate it's installed in, and Whatcom County is not an easy one for exposed wood. Between salt-laden air moving in off the Sound, long stretches of driving rain through fall and winter, and a moss season that can run most of the year in shaded, north-facing spots, cedar siding here is under near-constant moisture pressure.
Driving Rain and Wind-Driven Moisture
Cedar's natural rot resistance comes from oils in the heartwood, and that resistance fades as the board weathers and those oils leach out. Driving rain — rain pushed sideways by wind rather than falling straight down — gets behind laps, into end grain, and into any joint where caulk has started to fail. Once moisture gets behind a cedar board and can't dry out quickly, that's where rot starts, usually from the inside out where you can't see it until it's advanced.
Moss and Salt Air
A long moss season means organic growth sits on the wood surface for extended periods, holding moisture against it. Salt air accelerates the breakdown of finishes and hardware, meaning fasteners and coatings both wear faster near the water than they would inland. Combine the two and a cedar exterior in this area needs closer attention and a shorter maintenance interval than the same product would in a drier climate.
Insects, Rot, and the Repaint Cycle Compound Each Other
The three big risks to cedar siding — moisture, insects, and coating failure — don't happen in isolation. A missed repaint cycle lets moisture in. Moisture attracts carpenter ants and creates conditions for fungal decay. Rot and insect damage weaken the board, which then fails faster the next time it takes on water. Each problem makes the next one worse, and by the time damage is visible from the ground, it's often already spread further than it looks.
We've replaced enough failed cedar siding to know that the boards that fail first are almost never the ones that were painted on schedule. They're the ones where a maintenance cycle got pushed back a year or two — which happens to nearly everyone, because life gets in the way of ladder work.
Cedar vs. James Hardie Fiber Cement: A Straight Comparison
| Factor | Cedar Siding | James Hardie Fiber Cement |
|---|---|---|
| Repainting interval | Every 3-7 years | 15+ years with ColorPlus factory finish |
| Moisture behavior | Absorbs water, can rot if finish fails | Engineered to resist moisture damage; won't rot |
| Insect resistance | Vulnerable to carpenter ants, woodpeckers | Not a food or nesting source for insects |
| Fire behavior | Combustible | Non-combustible core material |
| Moss/algae resistance | Holds organic growth on porous surface | Denser surface, easier to keep clean |
| Warranty | Typically material-only from the mill | Long-term transferable warranty on product and finish |
| Upfront cost | Comparable to mid-tier fiber cement | Comparable to quality cedar installation |
Upfront material cost is often similar between the two. The real difference shows up in year five, year ten, and year twenty, in labor and materials spent on upkeep, and in what the siding looks like by the time a homeowner is ready to sell.
The Fire and Insurance Angle Is Worth Naming
Cedar is a combustible wood product. James Hardie fiber cement is non-combustible by composition. This matters more every year as wildfire risk becomes a bigger conversation across Washington, and some insurers are starting to factor exterior cladding material into premiums and underwriting. We're not going to overstate this — Sudden Valley isn't a high fire-risk zone the way parts of eastern Washington are — but it's a real, growing factor that didn't used to be part of a siding decision and now sometimes is.
Why We Standardized on James Hardie Instead
We made the decision to install James Hardie fiber cement exclusively, and to stop installing cedar (along with vinyl, LP SmartSide, and other engineered wood products) for the same underlying reason: we want what we put on a home to still look and perform well a decade or two later, without asking the homeowner to maintain it like a wood deck.
Hardie's HZ5 product line is engineered specifically for climates like ours — freeze-thaw cycles, sustained moisture, and coastal-influenced weather. The ColorPlus factory finish is baked on under controlled conditions rather than field-applied, which is a big part of why it holds color and resists cracking and peeling far longer than a site-applied paint or stain job ever will. The material itself doesn't rot, doesn't feed insects, and doesn't burn. And the warranty is transferable, which matters if a homeowner sells within the warranty period — a real consideration in a market like this one.
That's not us saying cedar is a bad product. It's us saying that for the climate we work in, and for the standard of "install it once and don't think about it again for a long time," fiber cement is the better fit, and we'd rather build our business around one product we can stand behind completely than offer several and split our expertise.
If You Already Have Cedar Siding
Not every cedar-sided home needs to be re-sided immediately. If you're maintaining cedar now, here's what actually protects it:
- Inspect caulking and joints every spring before the heavy rain season returns
- Keep gutters clean and downspouts directed away from siding to reduce splash-back moisture
- Trim back vegetation and tree cover that keeps siding shaded and damp longer than necessary
- Wash off moss and algae buildup at least annually, especially on north-facing walls
- Repaint or re-stain on schedule rather than waiting until finish failure is visible
- Address any soft, cupped, or split boards immediately rather than waiting for the next maintenance round
If the maintenance has fallen behind and you're looking at a real repaint-and-repair project versus a full replacement, that's a conversation worth having before committing dollars either direction.
What This Means for Your Decision
If you want the cedar look and you're committed to the maintenance schedule that comes with it, that's a legitimate choice and there are contractors who specialize in it. We're just not one of them, because we'd rather install one product exceptionally well than install several products at a level we're not fully confident in twenty years out. For homes in Sudden Valley and across Whatcom County, where the weather doesn't do the siding any favors, we've found that James Hardie gives homeowners the durability and low-maintenance profile that this climate calls for.
If you're weighing cedar against fiber cement, or you're just trying to figure out what condition your current siding is really in, we're happy to take a look and give you a straight answer — no pressure, no upsell. Request a free estimate below and we'll walk the exterior with you.