Sudden Valley Cedar Siding Isn't a Bad Product — It's a High-Maintenance One
We want to start with the honest part: cedar siding, when it's freshly installed, is genuinely beautiful. The grain, the warmth, the way it ages into a natural silver-gray or holds a rich stain color — there's a reason it's been a Pacific Northwest favorite for generations. Nobody on our crew would tell you cedar is a poor-quality wood. The problem isn't the material itself. The problem is what it takes to keep it looking and performing that way once it's on a wall in Whatcom County, year after year, through the kind of weather we actually get here.
This page explains why, after years of installing and repairing siding around Sudden Valley and the surrounding area, we made the decision to stop offering cedar as an option — and why we install James Hardie fiber cement instead.
What Cedar Gets Right
Before we get into the trade-offs, credit where it's due:
- Natural insulating properties and a genuinely warm, high-end appearance
- Renewable, biodegradable material with a long history in Pacific Northwest architecture
- Can be stained, painted, or left to weather naturally depending on the look a homeowner wants
- Lightweight and relatively easy to mill into custom profiles and details
If cedar siding lived in a climate-controlled museum case, none of what follows would matter much. It doesn't. It lives outside, on a wall, in a region that gives it almost no break from moisture.
The Maintenance Cycle Nobody Mentions at the Sales Pitch
Cedar siding is a wood product, and wood products need a sealed finish to keep water out. That finish — whether it's stain, solid-body coating, or paint — is not a one-time thing. It's a recurring maintenance obligation for as long as the siding is on the house.
Realistic Recoat Intervals
Depending on sun exposure, coating type, and how well the first application was done, cedar siding typically needs to be re-stained or re-coated every 3 to 7 years. South- and west-facing walls that take direct sun and driving rain wear out faster than shaded, protected elevations. That's not a worst-case estimate — that's the normal cycle for maintaining the finish, not fixing a problem.
What a Recoat Actually Involves
It's not a quick touch-up. A proper recoat means pressure washing or hand-cleaning the entire surface, letting it dry fully (which in our climate can take longer than homeowners expect), scraping and sanding any failing spots, spot-priming bare wood, and then applying one or two coats of stain or paint correctly — in the right weather window, which in Whatcom County can be narrow. Skip a step and the coating fails early, which just shortens the cycle further.
Why Whatcom County Weather Is Especially Hard on Cedar
Every siding material has to deal with weather. What makes cedar's maintenance burden worse here specifically is the combination of factors our area throws at it:
Driving Rain and Long Wet Seasons
Sudden Valley and the rest of Whatcom County see long stretches of sustained rain, often pushed sideways by wind off the water. That means siding doesn't just get wet — it gets wet at an angle, which finds its way into seams, laps, and any spot where a coating has thinned or a nail has backed out slightly.
Salt Air
Marine air moving in off the Puget Sound corridor carries salt that accelerates the breakdown of finishes and fasteners. It's a slow, cumulative effect — not dramatic, but it shortens the useful life of every coating cycle.
A Long Moss and Algae Season
Our mild, damp climate is close to ideal for moss and algae growth, and cedar's textured, absorbent surface gives it plenty to hold onto. Moss on siding isn't just a cosmetic issue — it traps moisture against the wood, and moisture trapped against wood for long periods is exactly the setup for rot. Keeping cedar moss-free here is an ongoing job, not a once-a-decade cleaning.
What Happens When Cedar Isn't Kept Up
We've replaced enough failed cedar siding to know the pattern. It's rarely dramatic — it's gradual, and it's usually hidden until it isn't.
- Cupping and warping — boards absorb moisture unevenly and pull away from flat, letting even more water in behind them
- Checking and splitting — surface cracks open as the wood expands and contracts through wet-dry cycles, and those cracks become entry points for water
- Rot at butt joints and bottom edges — the places where boards meet or sit closest to grade hold moisture longest and fail first
- Nail staining and popped fasteners — moisture cycling works fasteners loose over time, creating new gaps
- Pest attraction — softened, moisture-damaged wood is more attractive to carpenter ants and other wood-destroying insects
None of this means cedar was installed wrong or is defective. It means the maintenance schedule got interrupted — a busy year, a house that changed hands, a coating that looked "fine enough" for one more season — and in this climate, that gap is where the damage happens.
The Real Cost Picture Over Time
The sticker price comparison between cedar and other siding materials only tells part of the story. What matters more is the total cost of ownership over the life of the siding.
| Factor | Cedar Siding | James Hardie Fiber Cement |
|---|---|---|
| Factory finish | Bare or site-primed; finish quality depends on installer and weather at time of application | ColorPlus baked-on factory finish, engineered for UV and moisture resistance |
| Recoat/repaint cycle | Roughly every 3–7 years depending on exposure | ColorPlus finish is designed to go well beyond a standard paint cycle before attention is needed |
| Moisture behavior | Absorbs and releases moisture; prone to cupping, checking, and rot if finish fails | Fiber cement does not swell, rot, or support insect damage |
| Combustibility | Combustible wood product | Non-combustible material |
| Moss/algae resistance | Textured surface holds moisture and organic growth | Denser surface sheds water and resists sustained organic growth better |
| Warranty | Varies by finish product; wood substrate itself typically unwarranted against moisture damage | Manufacturer-backed, transferable product warranty |
When homeowners budget only for the install and not for the decade of recoats that follow, the "cheaper" material usually ends up costing more in labor and material over 15–20 years — and that's before accounting for repair costs if a maintenance gap leads to rot.
The Fire and Insurance Angle
Cedar is a combustible wood product. In a region with increasing wildfire-season awareness across the Pacific Northwest, some insurers are starting to factor exterior cladding material into coverage and premiums. James Hardie fiber cement is non-combustible, which is a straightforward, verifiable difference — not a marketing claim — and one more reason we don't feel comfortable recommending wood siding as a long-term exterior for this area.
If You Already Have Cedar Siding
We're not telling every homeowner with existing cedar to rip it off tomorrow. Well-maintained cedar can last a long time. If you have cedar now, here's what actually keeps it healthy in our climate:
- Inspect all elevations annually, especially south and west walls and anywhere siding meets trim, decks, or grade
- Clean moss and algae off promptly — don't let it establish and spread through a wet season
- Recoat before the finish fully fails, not after — waiting until bare wood shows means the wood has already been exposed
- Keep gutters, downspouts, and grading directing water away from siding, not onto it
- Address popped nails, open joints, and caulk failures as soon as you spot them
- Keep vegetation and sprinklers from holding constant moisture against the wall
When cedar siding reaches the point of widespread cupping, rot, or a finish that's failing faster than it can reasonably be kept up, that's usually when a full replacement conversation makes more sense than another round of scraping and recoating.
Why We Standardized on James Hardie
We made a decision as a company to install one siding system — James Hardie fiber cement — rather than offer a menu of products with very different maintenance realities. Hardie's HZ5 product line is engineered specifically for climates like ours: freeze-thaw cycling, sustained moisture, and coastal conditions. The ColorPlus factory finish means the color and protective coating are baked on under controlled conditions before the product ever reaches a job site, not applied by hand in whatever weather window we happen to get between rain systems. It's non-combustible, it doesn't feed moss the way a porous wood surface does, and it carries a strong transferable warranty that reflects the manufacturer's confidence in how the product holds up over decades — not just years.
That's the whole reason behind this page and the others like it on our site. We'd rather be upfront about why we don't install cedar, vinyl, or engineered wood products than sell a homeowner in Sudden Valley something we know will demand a maintenance schedule this climate makes hard to keep up with.
If you're weighing cedar against fiber cement for a new build or a full re-side, we're happy to walk through your specific home, sun exposure, and budget in person. Reach out for a free, no-pressure estimate — no obligation, just a straight answer about what makes sense for your house.