Blaine Siding Board & Batten Siding Built for Custer's Coastal Climate
Custer sits close enough to the water that homes here deal with a version of weather most siding wasn't designed for. Salt-laden air off the Salish Sea and Boundary Bay drifts inland on a regular basis, driving rain comes through sideways more often than straight down, and the shaded, damp stretches along Whatcom County's tree lines keep moss and algae active for a good chunk of the year. Board and batten siding, done right, holds up well to all of that — but "done right" is doing a lot of work in that sentence. This page covers what a board and batten job needs to get right in Custer specifically, and why the product and the install matter just as much as each other.
Why Custer Homes Need More From Their Siding
Salt Air and Corrosion
Salt air doesn't just affect homes with an ocean view. Wind carries fine salt particles well inland, and over years that salt settles into fasteners, flashing, and any exposed metal on a home's exterior. Cheap or mismatched fasteners corrode from the inside out, staining the siding around each nail head long before the panel itself fails. It's one of the most common things we get called out to look at on older homes in this area — not rotten siding, but rust bleeding through paint at every nail line.
Driving Rain Off the Bay
Whatcom County gets a lot of rain, but volume isn't the whole story. Wind off the bay pushes rain sideways into walls, gables, and anywhere two building planes meet. Board and batten's vertical joints and batten strips create more seams than a lap siding job, and every one of those seams is a potential water path if it isn't flashed and lapped correctly. This is a style that rewards careful detailing and punishes shortcuts.
A Long Moss Season
Shaded north walls, roof overhangs, and the general dampness of a Whatcom County winter add up to a moss and algae season that runs longer here than in drier parts of the state. Moss holds moisture against the siding surface, and on the wrong substrate that moisture eventually finds its way into the wall assembly. A siding product's ability to shed that moisture and resist staining matters as much as its ability to handle a single hard rain.
Why Board & Batten Works So Well Here
Board and batten has a clean, vertical look that suits farmhouse, craftsman, and modern exteriors alike, and it's a popular choice for accent gables, dormers, and full elevations on homes throughout the Blaine and Custer area. Beyond the look, the vertical orientation actually helps water move down and off the wall rather than pooling on a horizontal ledge, which is a real advantage in a driving-rain climate — provided the panel material underneath doesn't swell, delaminate, or wick moisture at the joints. That's the part that separates a board and batten job that looks good for two years from one that looks good for twenty.
The James Hardie Board & Batten System We Install
We install James Hardie fiber cement exclusively, and for board and batten that means Hardie's vertical panel products paired with fiber cement battens and trim — not wood battens over a cement panel, and not a hybrid of materials with different expansion rates and different lifespans nailed to the same wall. Keeping the whole system fiber cement keeps the moisture behavior, the finish, and the maintenance schedule consistent across every board and every batten.
Panel and Batten Options
Hardie's vertical siding panels come in smooth and textured finishes, and their Artisan Collection offers a beaded board and batten profile for homeowners who want a more traditional, dimensional look. Battens and trim boards come from the same engineered fiber cement line, milled and finished to match. Everything is manufactured to the same standard, so panel and batten age at the same rate and take a factory finish the same way.
ColorPlus Factory Finish
James Hardie's ColorPlus finish is baked on at the factory under controlled conditions, which gives it better fade and moss-stain resistance than field-applied paint. In a climate where north-facing walls can stay damp for weeks at a stretch, a finish that resists gripping moss and algae growth is worth more than it sounds like on paper. It also means touch-up, when it's ever needed, is limited and straightforward rather than a full repaint.
What a Correct Board & Batten Installation Involves
Rainscreen and Drainage
Vertical siding needs a drainage gap behind it just as much as horizontal lap siding does. We install a rainscreen or furring system that lets any moisture that gets behind the panel drain and dry out rather than sitting against the sheathing. Skipping this step is one of the most common corners cut on board and batten jobs, because it adds labor without being visible once the siding is up.
Flashing at Every Penetration
Every window, door, hose bib, light fixture, and vent penetration on a board and batten wall needs its own flashing detail, and vertical panel joints need proper lapping or Z-flashing behind the battens. With more vertical seams than a typical lap job, there are simply more places for water to find a way in if flashing is treated as an afterthought instead of a sequence planned before the first panel goes up.
Fasteners That Won't Fight the Salt Air
Given how much salt air moves through this part of Whatcom County, we use fasteners rated for coastal and corrosive exposure rather than standard-grade nails or screws. It costs more up front and it's invisible once the job is done, but it's the difference between a wall that stays clean at every nail line for decades and one that starts rust-streaking within a few winters.
Board & Batten Material Comparison
| Material | Behavior in Salt Air & Driving Rain | Moss/Algae Resistance | Long-Term Maintenance |
|---|---|---|---|
| James Hardie Fiber Cement | Non-combustible, engineered to resist moisture damage when installed with proper drainage and flashing | ColorPlus finish resists staining better than field-applied paint | Occasional gentle rinse; factory finish reduces repainting |
| Vinyl Siding | Can warp or crack under temperature swings and wind-driven impact; seams rely on overlap, not sealed joints | Moss and algae grow on the surface film readily in shaded, damp areas | Low upfront maintenance but limited repair options once faded or cracked |
| Cedar / Primed Spruce | Natural wood movement plus coastal moisture accelerates checking and rot at end grain and joints | Prone to moss and mildew without regular treatment | Requires ongoing staining, sealing, or painting on a recurring cycle |
| LP SmartSide (engineered wood) | Engineered wood core is more moisture-sensitive at cut edges and panel joints than fiber cement | Moderate; depends heavily on maintaining an intact factory coating | Cut edges and joints need ongoing sealant inspection |
We don't install vinyl, cedar, primed spruce, or engineered wood siding. Each of those products has legitimate uses elsewhere, but for the moisture and salt exposure Custer homes deal with, we've standardized on fiber cement because it holds up to this specific climate with the least long-term maintenance burden.
Our Process From Estimate to Finished Wall
- On-site assessment of the wall assembly, existing siding condition, and any moisture or rot already present behind it
- Review of drainage plane, flashing needs, and panel/batten layout specific to your home's elevations
- Removal of old siding and repair of any compromised sheathing before a single new panel goes up
- Installation of rainscreen or furring, flashing at all penetrations, then Hardie panels and battens with corrosion-resistant fasteners
- Final walkthrough covering caulk lines, trim details, and care recommendations specific to your home's exposure
Maintenance in Custer's Climate
A correctly installed board and batten system doesn't need much, but a little seasonal attention goes a long way in this climate:
- Rinse siding gently once or twice a year, especially on shaded or north-facing walls where moss tends to establish
- Keep gutters and downspouts clear so overflow doesn't run down the wall face between panel joints
- Trim back vegetation and tree cover that keeps a wall section shaded and damp longer than the rest of the house
- Check caulking at trim and penetrations every year or two, since sealant is the one component that wears faster than the siding itself
- Have any nail-line staining or discoloration looked at early — it's cheaper to address a fastener issue than a water intrusion problem
Why Hire a Crew That Already Works Custer
Board and batten siding is unforgiving of guesswork. The flashing sequence, the fastener spec, and the drainage detailing all need to match the actual conditions on the wall, not a generic install manual. A crew that already works throughout the Blaine and Whatcom County area has seen how homes in this specific stretch of coastline age — where moss takes hold first, which walls take the worst of the wind-driven rain, and what fastener and flashing choices actually hold up here over time. That local pattern recognition is worth more than it sounds like until the first hard winter after installation.
If you're weighing board and batten siding for a home in Custer, we're happy to walk the property, look at what's there now, and give you a straightforward, no-pressure estimate for doing it right the first time. There's a contact form below to get started.