Snohomish Cedar Deserves an Honest Conversation, Not a Sales Pitch
Cedar siding has a real following, and there are good reasons for that. The grain is beautiful, the color deepens into a warm silver-gray if it's left unfinished, and it has a genuine, natural look that manufactured products spend a lot of marketing money trying to imitate. If you've ever run your hand over a freshly installed cedar bevel board, you understand the appeal immediately.
What doesn't get said often enough — especially by whoever is trying to sell you the material — is what cedar asks of you after installation day. This page is not an attack on cedar as a wood species. It's a straight answer to the question homeowners in Snohomish and across Snohomish County actually need answered before they commit: what does owning cedar siding really involve, year after year, in this specific climate?
What Cedar Siding Actually Is
"Cedar siding" covers a few different products, and the maintenance burden shifts depending on which one you're looking at:
- Bevel (lap) siding — the classic horizontal board look, milled from clear or knotty cedar
- Cedar shingles and shakes — individually applied, more texture, more seams, more edges exposed to weather
- Tongue-and-groove or board-and-batten — vertical applications, often used as accent siding
- Clear vs. knotty grade — clear cedar costs more and resists checking better; knotty grade is cheaper but the knots are weak points where moisture gets in first
Every one of these is real wood, and real wood is a living material even after it's milled and nailed to a wall. It expands, contracts, absorbs moisture, and reacts to sunlight. That's not a flaw — it's just what wood does, and it's the starting point for everything below.
The Maintenance Cycle Nobody Mentions at the Sales Pitch
Cedar siding is not a one-and-done exterior product. To keep it performing and looking the way it did on day one, it needs a recurring maintenance schedule that most homeowners underestimate:
Stain or Seal, On a Clock
Whether you go with a semi-transparent stain, solid stain, or clear sealer, cedar needs to be recoated on a schedule — typically every 2 to 4 years depending on sun exposure, product quality, and how much weather the wall takes. Skip a cycle and you're not just losing color; you're losing the protective barrier that keeps water out of the wood fibers.
Caulking and Joint Maintenance
Every seam, corner, and trim joint on a cedar installation relies on caulking that degrades over time. UV exposure and constant wet-dry cycling in western Washington accelerate that breakdown, which means caulk lines need regular inspection — not a one-time install-and-forget.
Cleaning
Cedar needs periodic washing to remove surface dirt, pollen, and the early stages of mildew and moss growth before they take hold. Pressure washing has to be done carefully and at the right pressure and angle, or it drives water up under the boards instead of just cleaning the surface.
Moisture, Moss, and the Long Wet Season
This is the part of the equation that matters most if you live in Snohomish or anywhere else in Snohomish County. Western Washington gives cedar siding almost exactly the conditions it struggles with most: long stretches of driving rain, mild temperatures that never fully dry the wood out between storms, and a moss season that can run most of the year on shaded or north-facing walls.
Wood siding needs to dry out between wet periods to stay healthy. In a climate with a genuinely long wet season, that drying window keeps shrinking. Moisture that gets trapped behind a failed caulk joint or a worn finish doesn't evaporate quickly — it sits against the wood, and that's exactly the environment moss, mildew, and eventually rot need to get started. Homes near the water or exposed to salt-laden air face an added layer of corrosion pressure on fasteners and finishes, which shortens the interval between necessary maintenance cycles even further.
None of this means cedar siding is doomed to fail. Plenty of well-maintained cedar homes hold up for decades. But "well-maintained" is doing a lot of work in that sentence, and it means staying on top of the schedule above without gaps — something that's a lot easier to promise than to actually do for 15 or 20 years straight.
Cedar vs. Fiber Cement: A Straight Comparison
| Factor | Cedar Siding | James Hardie Fiber Cement |
|---|---|---|
| Refinishing schedule | Every 2-4 years (stain/seal) | ColorPlus finish holds color for years; repaint only if desired, not required for protection |
| Moisture behavior | Absorbs water, can swell, cup, or rot if finish fails | Engineered to resist moisture absorption and won't rot |
| Insect vulnerability | Attractive to carpenter ants, wood-boring insects | Not a food or nesting source for insects |
| Fire behavior | Combustible | Non-combustible core material |
| Moss/mildew resistance | Requires active cleaning and finish maintenance to resist | Far less hospitable surface for moss and mildew growth |
| Warranty structure | Typically limited to material only, maintenance-dependent | Strong transferable manufacturer warranty on the product itself |
This isn't cedar failing a test — it's two materials engineered for different priorities. Cedar prioritizes a natural wood appearance and accepts a maintenance burden as the cost of that look. Fiber cement prioritizes long-term, low-maintenance performance and engineers around the specific failure points that wood struggles with in a wet climate.
Insects, Rot, and Where Failures Actually Start
When cedar siding fails, it rarely fails as a flat, uniform problem across the whole wall. It fails at specific points: butt joints where two boards meet, the bottom edges of boards where water sheds off and lingers, nail heads that have backed out and left an entry point, and anywhere the finish has worn thin from sun exposure. Carpenter ants and other wood-boring insects are drawn to softened, moisture-compromised wood, which means a maintenance gap doesn't just cost you a paint job later — it can open the door to a pest problem that's far more expensive to resolve.
Rot, once it starts behind cedar siding, is also hard to catch early. By the time discoloration or soft spots are visible from the outside, moisture damage has often been progressing behind the board for a while. Catching it requires the kind of regular, close inspection that most homeowners aren't doing every season.
What Cedar Ownership Actually Requires, Year to Year
If you're weighing cedar honestly, here's the realistic annual and multi-year commitment:
- Visual inspection of all siding, trim, and caulk joints at least once a year, ideally before winter
- Cleaning to remove moss, mildew, and surface dirt — more often on shaded or north-facing walls
- Re-caulking joints and trim as they open up or degrade
- Restaining or resealing on a 2-4 year cycle, sooner on south- and west-facing exposures
- Prompt replacement of any board showing cupping, splitting, or soft spots before it spreads to neighboring boards
- Periodic check for insect activity, especially near ground-contact areas and untreated cut ends
- Keeping gutters clear and grade/landscaping pulled back so water and vegetation aren't sitting against the siding
That's not a light list, and skipping items on it doesn't save you money — it just moves the cost from routine maintenance to eventual board replacement or repair, usually at a higher price than staying ahead of it would have cost.
The Real Cost Over Time
Cedar siding's upfront material cost sits in a middle range compared to other siding options, but the number that matters is the cost over the life of the siding, not the install-day price. Factor in recurring refinishing labor and materials every few years, periodic board repair or replacement, and the labor cost of proper cleaning, and cedar's total cost of ownership climbs steadily over a 20- or 30-year window. Fiber cement's higher relative install cost is offset by a maintenance schedule that's dramatically lighter — no recurring refinishing requirement to protect the substrate, because the substrate itself isn't vulnerable to moisture the way wood is.
We're not going to hand you a per-square-foot number here, because honest pricing depends on your specific home, elevation, and site conditions. What we will tell you is to run the comparison over decades, not over the first invoice.
Why We Install James Hardie Instead
We made a decision as a company to install only James Hardie fiber cement siding, and cedar's maintenance profile is a core part of why. We'd rather put a product on your home that holds its ColorPlus factory finish for years, resists moisture-driven rot and insect damage by design, and carries a strong transferable warranty — than sell you something that looks great at handoff and quietly becomes a recurring maintenance obligation that competes with everything else on your to-do list.
Hardie's HZ5 product line is engineered specifically for climates like ours — freeze-thaw cycling, extended wet seasons, and the kind of driving rain and moss pressure that Snohomish County sees for a good part of the year. It's not that cedar is a bad material. It's that we'd rather stand behind an install that doesn't need you to become a part-time siding caretaker to keep it protected.
Get an Honest Look at Your Options
If you're weighing cedar against fiber cement for a Snohomish home, we're happy to walk your property, talk through your specific exposures, and give you a straight answer — no pressure, no upsell. Reach out for a free estimate and we'll help you figure out what actually makes sense for your house and your climate.