Ferndale Exterior Board & Batten Siding, Built for What Bellingham Weather Actually Does
Board and batten keeps showing up on request lists from homeowners in and around Bellingham, and it's easy to see why — the vertical boards and narrow cover strips give a home a cleaner, more architectural line than standard lap siding, whether the house is a newer build near the water or an older place getting a facelift. What often gets less attention is that board and batten is a fundamentally different assembly than lap siding, not just a different look. Every batten covers a seam between two boards, and every one of those seams is a spot where wind, rain, and the marine air off the Salish Sea can try to work their way in. In Whatcom County, where salt-tinged air, sideways rain, and a moss season that barely takes a break test every seam on a house, how those joints are built decides whether the siding still looks sharp in fifteen years or starts showing trouble at year five.
We install James Hardie fiber cement exclusively, and every batten reveal, fastener pattern, and flashing detail on a Bellingham job is built around what this coastline does to a wall over decades — not around what looks tidy on the day the crew packs up.
What Local Conditions Ask of a Vertical Siding Profile
Wind-Driven Rain Finding the Seams
Rain in this part of Whatcom County rarely falls straight down for long. Wind coming off the water pushes it at an angle, and a vertical profile with battens running the full height of a wall gives that sideways rain a lot of seam to test. If a batten is set too tight against the board beneath it, or if the joint relies on caulk instead of correct lap and clearance, that seam stops shedding water and starts holding it.
Salt Air and What It Does to Fasteners
Homes closer to Bellingham Bay deal with a steady dose of salt in the air, and salt is hard on exposed metal. Board and batten uses more fasteners per square foot than lap siding because both the boards and the battens have to be secured independently, which means fastener spec — the right corrosion resistance, the right length, the right spacing — carries more weight on this profile than on most others.
A Moss Season That Doesn't Really End
Shaded walls, north faces, and anywhere tree cover keeps a surface from drying out are where moss and mildew take hold fastest, and Whatcom County's overcast, wet stretch of the year gives them plenty of time to do it. A batten nailed flush against its board with no room for airflow behind it traps whatever moisture gets in, and that's the setup that leads to staining, soft substrate, and paint or finish failure right along the seam line.
Why the Material Behind the Boards Carries More Weight on This Profile
Board and batten has more joints and more exposed edges than almost any other siding style, which means it amplifies whatever a material is already weak at. That's a big part of why we don't offer LP SmartSide, vinyl, Cemplank, Allura, primed spruce, or cedar board and batten. Those are all products other contractors install competently — we simply made the call that on a profile with this much seam exposure, in a climate this consistently wet, we'd rather stand behind one system we trust completely than offer a cheaper option and let the homeowner discover its limits later.
| Material | How It Handles Seam Exposure | Upkeep in This Climate | Realistic Lifespan |
|---|---|---|---|
| James Hardie fiber cement | Stays dimensionally stable at the joint; won't swell, cup, or warp | Low — factory finish resists moss growth and UV fading | 30+ years installed to spec |
| LP SmartSide (engineered wood) | Cut edges and fastener holes are the vulnerable points if sealing lapses | Moderate — edge sealing needs periodic attention | 15-25 years, climate-dependent |
| Vinyl | Seams can loosen or gap with temperature swings at the battens | Low visible upkeep, but hidden moisture issues are hard to spot | 20-30 years, variable |
| Cedar | Absorbs moisture at every seam without a consistent sealing schedule | High — refinishing on a recurring cycle | 15-25 years with diligent maintenance |
Fiber cement's core doesn't move with moisture the way wood-based or wood-composite products do, and that stability matters most on a style built entirely of vertical seams. James Hardie's factory-applied ColorPlus finish also means the only field-painted surfaces on the job are cut edges, not entire boards — which takes the biggest variable in long-term appearance (how well a field-applied coat holds up outdoors) out of the equation.
What a Board & Batten Install Has to Get Right
The finished look is simple: vertical boards, narrow strips over the seams. What's underneath that look is where the real work happens, and where a rushed crew can cut corners a homeowner won't see until years later.
- Weather-resistive barrier installed first and lapped correctly, before any siding goes up
- A drainage gap or rainscreen behind the boards so moisture that does get past the surface can dry instead of sitting against the sheathing
- Corrosion-resistant fasteners at the spacing James Hardie's install spec calls for — not just enough to hold the board up
- Battens set with proper clearance rather than caulked tight, so water can move down and off the wall instead of pooling behind the strip
- Correctly flashed transitions at every window, door, corner, and the base of the wall, where a vertical run meets a horizontal surface
- Field-cut edges primed before installation to preserve the factory finish everywhere else on the board
None of these show up in a finished photo. All of them show up eventually if they're skipped — usually as staining along a seam, softness near the base of a wall, or finish failure at the battens, none of which appear until the wall has been through a few full wet seasons.
How We Approach a Board & Batten Project in Bellingham
Walking the Property First
We start by looking at which walls take weather head-on, which are shaded and slow to dry, and whether the existing wall assembly already has moisture problems that need addressing before new siding goes on. Installing board and batten over a wall with hidden damage just hides the problem under a new surface instead of fixing it.
Planning the Details Before Anyone Cuts a Board
Batten spacing, corner treatment, and how the siding meets trim, windows, and rooflines get worked out before installation starts. A profile with this many seams doesn't leave room for figuring it out as the crew goes — the details that get improvised in the field are usually the ones that come back to bite a wall a few years later.
Installing to the Manufacturer's Spec, Not a Generic One
Every fastener, gap, and flashing lap follows James Hardie's published requirements for this climate zone specifically. That's what keeps the manufacturer's warranty valid, and it's also just what makes the wall perform correctly for the long haul rather than the first few dry summers.
Walking It With You When It's Done
We go over the finished job together, explain what little maintenance board and batten actually needs with this material, and make sure you know what a healthy wall looks like if you ever want to check on it yourself down the road.
Why Hiring a Crew That Already Works This Area Matters
Board and batten rewards familiarity with a specific climate more than most siding styles do, because its failure points are quiet and slow to surface. A crew that has installed this profile across Bellingham and the rest of Whatcom County through repeated wet seasons already knows which wall orientations need extra attention because of shade or tree cover, how much batten clearance actually holds up against this area's rain versus what a generic national install guide suggests, and where a rainscreen gap is worth the extra step and where it isn't. That judgment doesn't show up on a spec sheet or a sales brochure — it's the difference between a wall that still looks and performs the same in fifteen years and one that's already showing seam staining well before then.
What Board & Batten Costs and What Moves the Number
Board and batten generally runs more per square foot than standard lap siding, mostly because of the added material — battens on top of boards — and the extra labor of fastening and detailing two layers instead of one. Beyond that baseline, a handful of things shift the price on any given Bellingham home:
| Factor | Why It Affects Cost |
|---|---|
| Wall height and layout complexity | More corners, dormers, and roof transitions mean more cuts and flashing work |
| Condition of the existing wall | Rot or moisture damage found at tear-off has to be repaired before new siding goes up |
| Batten spacing chosen | Tighter reveals use more material and more fastening labor per wall |
| Number of windows and doors | Each opening adds flashing and trim detail work |
| Site access | Steep or tight lots can add time to material staging and install |
Square footage alone doesn't tell the whole story — two homes the same size can land at noticeably different numbers once these factors are accounted for, which is why we prefer to look at the actual walls before giving you a real figure.
Getting It Right the First Time Matters More Here
Board and batten isn't a style that forgives a bad install with a quick patch. Because the battens sit over the seams, correcting mistakes usually means pulling battens, boards, or both — not touching up a spot. That's why we treat the planning and detailing stage of a board and batten project as seriously as the installation itself. Getting it right the first time costs less, in every sense, than tearing out a wall that was rushed.
If you're considering board and batten for a home in Bellingham, we're glad to come take a look, talk through what your walls specifically need given their exposure and orientation, and give you a straightforward, no-pressure estimate. There's a form below — reach out and we'll set up a time to walk the property with you.