Bellingham Exterior Board & Batten Siding for Ferndale Homes
Ferndale sits close enough to the water that salt air, wind-driven rain, and long stretches of shade under Douglas fir and cedar are just part of owning a home here. Board and batten siding — wide vertical panels with narrow trim boards covering the seams — has become a popular look for farmhouse-style remodels, new builds, and gable or dormer accents throughout Whatcom County. It's a strong look when it's built right. It's also one of the least forgiving siding styles to get wrong, because every batten line is another seam that has to shed water for decades. We install board and batten exclusively in James Hardie fiber cement, and this page walks through what that actually involves for a Ferndale home.
What Ferndale's Climate Does to Vertical Siding
Board and batten siding runs vertically, which means every seam is a direct path for water moving downward with gravity and wind. In a climate like ours, that matters more than it would somewhere dry.
Salt air and driving rain
Ferndale's proximity to Bellingham Bay and the Strait of Georgia means airborne salt reaches homes well inland, especially on west- and north-facing walls that catch prevailing weather. Salt-laden moisture accelerates corrosion on fasteners and metal flashing that aren't rated for it, and it collects in the narrow gap behind poorly installed battens where it never fully dries out. Combine that with Whatcom County's driving rain — storms that come in sideways off the water rather than straight down — and any seam that isn't properly lapped, flashed, or gapped becomes a slow leak point.
Moss season
Shaded, damp walls under mature trees are common on Ferndale lots, and moss and algae take hold anywhere siding stays wet longer than it should. On board and batten, that usually shows up first as staining on the battens themselves and in the shadow lines where panels meet — a visual signal of what's happening with moisture behind the surface as well as on top of it.
The James Hardie System We Install
We build board and batten walls using James Hardie's fiber cement vertical siding paired with HardieTrim battens, finished in factory-applied ColorPlus. A few things about that system matter specifically for this style:
- Non-combustible, dimensionally stable panels — fiber cement doesn't swell, cup, or split at the seams the way wood-based sheet products can when they take on repeated moisture cycles.
- Factory-baked ColorPlus finish — the color and protective coating are cured onto the panel and battens before they arrive on site, so the finish on a board and batten wall — which has far more edges and cut ends exposed to weather than lap siding — holds up more evenly over time than field-applied paint.
- Engineered for the Pacific Northwest — Hardie's HZ10 product line is formulated for wetter, more moisture-cycling climates like ours, which is the version we spec for Whatcom County installs.
- Purpose-built trim — HardieTrim battens are milled and finished to match the panel system, rather than dimensional lumber or composite trim pieced together on site.
Why We Don't Install Vinyl or Wood-Based Board & Batten
Board and batten is offered in vinyl and in engineered wood (OSB-based) panel systems, and both have a place in the market. We don't install either, and it's worth explaining why rather than just saying no.
Vinyl board and batten is affordable and low-maintenance in the sense that it doesn't need painting, but it's a thin material that expands and contracts significantly with temperature swings — movement that shows up as visible waviness on tall, flat vertical panels more than it does on shorter horizontal lap courses. It also isn't the actual water barrier; it relies entirely on what's behind it, and any gap or fastener error is harder to catch during installation because the product flexes.
Engineered wood board and batten uses an OSB substrate with a resin-saturated overlay. It performs well when the overlay stays fully intact, but any breach at a cut edge, fastener hole, or seam — exactly the kind of detail board and batten has more of than lap siding — lets moisture reach the wood substrate, and OSB doesn't recover well once it's wet. In a climate with our rainfall and moss season, that's a real trade-off, not a hypothetical one.
Fiber cement doesn't have either problem: it's dimensionally stable and doesn't rely on an intact surface layer to resist water at the core. That's the standard we hold installations to, and it's why we standardized on James Hardie rather than offering multiple siding materials.
What a Correct Board & Batten Installation Involves
The style adds detail work that lap siding doesn't have, and skipping any of it is what causes the moisture problems Ferndale's climate is quick to expose.
The drainage gap
Behind the panels, we install vertical furring strips to create a rainscreen gap — a continuous air space that lets any moisture that does get past the surface drain out and dry, rather than sitting against the panel and sheathing. This is one of the most commonly skipped steps on lower-bid installs, and it's one of the most important in a marine climate.
Flashing and weather-resistive barrier
A properly lapped weather-resistive barrier goes on before the furring strips, with flashing at every horizontal transition, window and door head, and the base of the wall. On board and batten specifically, the top and bottom terminations of each panel run need attention, since that's where water traveling down the vertical seams has to be redirected out and away from the wall.
Fasteners and battens
We use corrosion-resistant fasteners rated for coastal exposure, driven per Hardie's fastening schedule — not guessed at. Battens are set to cover the panel seams with consistent spacing and reveal, and joints are sealed with a high-quality, paintable sealant rated for exterior fiber cement, not general-purpose caulk.
Checklist: what a correctly installed board and batten wall should have
- A continuous rainscreen gap behind the panels, not battens fastened directly over house wrap
- Flashing at every window, door, and horizontal wall transition
- Corrosion-resistant fasteners appropriate for coastal exposure
- Consistent batten spacing and reveal across the full wall
- Sealant at seams rated for exterior fiber cement, not generic caulk
- HZ10 (or equivalent moisture-zone-rated) Hardie product specified for our climate
Our Process, Start to Finish
- On-site inspection. We look at your existing siding, sheathing condition, and any trouble spots — shaded walls, past moisture staining, areas with heavy wind or rain exposure — before we quote anything.
- Honest estimate. You get a clear scope and price with no pressure to sign that day.
- Tear-off and sheathing check. Old siding comes off and we inspect the sheathing underneath for rot or damage before closing the wall back up.
- Weather barrier and rainscreen. Weather-resistive barrier, flashing, and furring strips go on to create the drainage gap.
- Panel and batten installation. HardiePanel vertical siding and HardieTrim battens are installed to Hardie's fastening and clearance specifications.
- Seal and finish. Seams are sealed, trim is finished, and the site is cleaned up.
Board & Batten vs. Other Siding Styles
| Factor | Board & Batten | Horizontal Lap |
|---|---|---|
| Seam count | Higher — every batten is a seam | Lower — fewer joints per wall |
| Install detail required | More trim work and flashing points | More straightforward, fewer transitions |
| Look | Farmhouse, modern, accent gables/dormers | Traditional, most common regional look |
| Labor | Somewhat higher, due to added trim pieces | Generally lower for equivalent wall area |
| Moisture sensitivity if done wrong | Higher — more vertical paths for water | Lower, but still requires correct lapping |
Neither style is "better" outright — board and batten is often used as an accent alongside lap siding on the same home, which is common on Whatcom County builds. The point of the table is that board and batten simply demands more attention to installation detail, which is why the crew doing it matters as much as the material.
Why a Ferndale-Familiar Crew Matters
A crew that regularly works Ferndale and the surrounding Whatcom County area already knows which walls on a given lot take the worst of the driving rain, where shade and tree cover tend to create moss problems, and how much salt exposure to plan for depending on how close a property sits to the water. That's not something you can fully account for from a general specification sheet — it comes from doing the work locally, wall after wall, season after season. It also means we're positioned to stand behind the work if something needs a look years down the road, rather than being a crew that passed through once.
If you're considering board and batten siding for a Ferndale home — whether as a full re-side or an accent on gables and dormers — we're happy to take a look and give you a straight answer about what it would take. Reach out for a free, no-pressure estimate using the form below.