Lynden Siding Siding Installation for Kendall Homes
Kendall sits in the part of Whatcom County where the weather doesn't do anything halfway. Homes here take on long stretches of damp, moisture-laden air moving through the county, driving rain that doesn't just fall straight down but gets pushed sideways into walls, and a moss season that can stretch for most of the year on shaded north and west-facing elevations. Siding out here isn't just a cosmetic layer — it's the single biggest factor in whether the wall assembly behind it stays dry, or slowly rots from the inside without anyone noticing until the damage shows up as soft trim, bubbling paint, or a mildew smell in a back bedroom.
We install siding for homes throughout the Lynden area, including Kendall, and we install exactly one product: James Hardie fiber cement siding. This page walks through what Kendall's climate actually does to a house, what a correct installation looks like, and why the crew doing the work matters as much as the material itself.
What Kendall's Climate Does to a House
Moss and Trapped Moisture
Moss doesn't just grow on roofs. Given a shaded wall, a rough or absorbent siding surface, and enough damp days in a row, moss and algae will colonize siding too — especially under eaves, behind shrubs, and on north walls that never get direct sun to dry out. Moss holds moisture against the surface far longer than open air would, which is exactly the condition that breaks down wood-based siding products and feeds paint failure. It's a slow problem, which is part of why it's dangerous — by the time it's visible, it's often already done months of quiet damage underneath.
Driving Rain and Wind-Driven Water
The other half of the equation is horizontal rain. Whatcom County gets weather systems that push rain into vertical wall surfaces, not just onto roofs, which means every seam, joint, and penetration in the siding system is a potential entry point. A siding job that looks fine from the street can still be failing behind the surface if the flashing details, house wrap laps, and butt joints weren't built to shed water outward rather than let it wick in. Over years, that kind of hidden moisture is what turns into sheathing rot, not a single big storm.
Why We Install Only James Hardie Fiber Cement Siding
We made a deliberate decision as a company to install one siding system and do it right, rather than offer a menu of products and let price shop the job down to whatever's cheapest that month. James Hardie fiber cement is what we put on homes in Kendall and across the rest of our service area, for a few specific reasons that matter in this climate.
Climate-Engineered HZ Product Lines
James Hardie engineers its HZ siding lines for different climate zones — the version specified for the Pacific Northwest is built around resistance to moisture and the freeze-thaw and wet-dry cycling that a marine-influenced climate like ours puts a wall through year after year. Fiber cement itself doesn't absorb water the way wood or wood-composite products do, and it doesn't feed mold and moss growth as a food source the way organic materials can.
ColorPlus Factory Finish
Most of the siding we install carries Hardie's ColorPlus finish — a factory-applied, baked-on finish that's more consistent and more resistant to fading and moisture intrusion at the surface than field-applied paint. That matters directly for moss and mildew resistance, since a tighter, more uniform finish gives algae and moss less to grip onto compared to a porous, job-site-painted surface.
Non-Combustible and Built to Last
Fiber cement is non-combustible, which is a real, practical advantage regardless of climate. Combined with a transferable warranty backing the product, it's a material we can stand behind on a Kendall roofline the same way we can anywhere else in the county — because it's engineered for exactly this kind of weather, not adapted to it after the fact.
What a Correct Siding Installation Actually Involves
The siding board itself is only part of the system. Most siding failures we get called out to inspect aren't a failure of the product — they're a failure of the installation details underneath it. A correct job includes:
Water Management Behind the Boards
A weather-resistant barrier installed with proper shingle-style laps, flashing at every window, door, and penetration, and a drainage plane that lets any moisture that does get behind the siding find its way back out instead of pooling against the sheathing. None of this is visible once the job is done, which is exactly why it has to be done right the first time.
Fastening, Clearances, and Joints
James Hardie publishes specific fastening patterns, minimum clearances from grade, roof lines, and decks, and gapping requirements at butt joints and trim. Skipping these details doesn't usually cause a visible problem in year one — it shows up in year five or ten, as a stained joint, a warped board, or moisture intrusion at a corner.
| Installation Detail | Done Correctly | Commonly Skipped |
|---|---|---|
| House wrap laps | Shingle-lapped, taped seams | Stapled loose, seams unsealed |
| Window and door flashing | Integrated with the water-resistive barrier | Caulk used as the only barrier |
| Siding-to-grade clearance | Manufacturer minimum maintained | Buried at grade or against hardscape |
| Butt joints | Gapped and flashed per spec | Tight-butted and caulked over |
| Fastener placement | Manufacturer pattern, correct depth | Overdriven or inconsistent spacing |
Our Process on a Kendall Project
Every job starts with a walk-around inspection of the existing siding and, where it's visible, the condition of the sheathing underneath. We're specifically looking for the signs a Kendall home tends to show first — soft spots under eaves, moss buildup on shaded walls, and staining at joints and corners that points to a moisture path.
- On-site inspection and honest assessment of what's actually needed — full replacement, partial re-side, or repair
- Removal of failing siding and inspection of the sheathing and framing behind it before anything new goes up
- Repair of any water-damaged sheathing found during tear-off, documented and discussed before we cover it back up
- Installation of the weather-resistive barrier, flashing, and drainage details first — the part nobody sees but everything depends on
- James Hardie fiber cement installation to manufacturer spec, including fastening, clearances, and joint treatment
- Final walkthrough and cleanup
Signs a Kendall Home May Need New Siding
Because moisture problems in this climate tend to develop slowly, it's worth knowing what to look for before a small issue becomes a sheathing repair. Common warning signs include:
- Persistent moss or dark streaking on shaded walls that pressure washing doesn't keep off for long
- Soft or spongy siding when pressed, especially near the bottom courses or under windows
- Paint that's bubbling, peeling, or failing faster than it should on one side of the house
- Visible gaps, warping, or cupping in boards, particularly at butt joints
- A musty smell in an interior room that shares a wall with a problem area outside
- Rising energy bills that suggest the wall assembly isn't performing the way it should
Why a Crew That Already Works Kendall Matters
Siding installation isn't a one-size-fits-all trade. A crew that regularly works Kendall and the surrounding Lynden area already knows what this climate does to a wall over time, has a working relationship with Whatcom County permitting where it's needed, and can plan around the weather windows that actually exist here rather than guessing. That local pattern recognition — knowing which elevations need extra attention to moss and drainage, which details fail first in this climate — is the difference between a crew that installs siding and a crew that installs siding that's still performing in fifteen years.
What Affects the Cost of a Siding Installation
Every home is different, but the same handful of factors drive the price on most Kendall projects. We'll always give a specific number after seeing the house — this is just what tends to move the estimate.
| Factor | Why It Matters |
|---|---|
| Condition of existing sheathing | Hidden moisture damage found at tear-off needs repair before new siding goes on |
| Home size and wall complexity | More corners, gables, and trim details mean more labor and material |
| Siding profile and finish | Lap width, texture, and color options carry different material costs |
| Access and site conditions | Trees, slopes, and tight setbacks affect scaffolding and staging time |
| Scope: full re-side vs. partial | Partial replacement can cost less but needs careful color and reveal matching |
If your Kendall home is showing signs of moss buildup, moisture damage, or aging siding, we're glad to take a look and walk you through exactly what we're seeing — no pressure, no upsell to a product we don't stand behind. Fill out the form below for a free estimate.