Ferndale Window Board & Batten Siding in Custer: What Makes It a Good Fit
Custer sits in the rural stretch of Whatcom County between Ferndale and the Canadian border, a mix of open farmland, tree-lined properties, and homes spaced further apart than you'll find in town. That openness means more direct exposure — to wind off the water, to driving rain with nothing to break it up, and to the kind of steady, damp air that keeps moss and mildew active for most of the year. Board and batten siding, done right, holds up well in that setting, and it also happens to suit the architectural style a lot of Custer properties lean toward: working farms, converted outbuildings, newer builds going for a modern farmhouse look, and older homes that want strong, clean vertical lines instead of traditional lap siding.
The vertical board-and-batten look isn't just cosmetic. When it's installed correctly, the batten strips shed water outward and away from the seams instead of letting it pool horizontally the way some lap profiles can in wind-driven rain. That's a real advantage in a location like Custer, where storms often come in sideways rather than straight down.
The Regional Climate Problem: Salt Air, Driving Rain, and Moss
Whatcom County's coastal climate is hard on exterior materials in three specific ways, and Custer gets all three:
Salt Air
Proximity to the Strait of Georgia and the broader Puget Sound airshed means a fine layer of salt-laden moisture settles on exterior surfaces year-round. Over time, that accelerates corrosion on unprotected fasteners and breaks down finishes that aren't formulated to resist it. Siding trim, fastener heads, and paint film all take the hit first.
Driving Rain
Rain in this area rarely falls straight down. Wind pushes it sideways into wall assemblies, which means the vertical seams and batten joints on a board-and-batten wall need real water management behind them — not just a good caulk job. Caulk alone always fails eventually; what's behind it is what actually keeps a house dry.
Moss and Mildew Season
Whatcom County's moss season isn't a few weeks — it's most of the fall, winter, and spring. Any siding material that holds moisture at the surface or at panel seams gives moss and mildew a foothold. Once established, it holds even more moisture against the wall, and the cycle accelerates.
None of this means board and batten is a bad choice here. It means the material and the installation both have to be matched to these three conditions specifically, not just installed the way a catalog photo shows it.
What a Correct Board & Batten Installation Actually Involves
A lot of the long-term performance of board and batten siding comes down to what's happening behind the boards, not the boards themselves. This is where a lot of installations — done fast, or done by a crew unfamiliar with this climate — go wrong.
Rainscreen Gap
Vertical siding profiles benefit strongly from a drainage gap (a rainscreen) between the siding and the water-resistive barrier. That gap lets any moisture that does get past the surface drain and dry out instead of sitting against the sheathing. In a high-rain, high-moss environment like this one, skipping this step is one of the most common causes of premature rot behind board and batten siding.
Fastening Pattern
Battens and boards need to be fastened according to the manufacturer's specified pattern and fastener type — not just "however many nails looks secure." Under-fastening lets panels move in wind and opens hairline gaps at the seams. Over-fastening or using the wrong fastener can crack fiber cement or, over years, allow corrosion to start at the fastener head, which is a bigger risk with salt air in the mix.
Flashing and Trim Details
Every window, door, and roofline intersection is a place water wants to get behind the siding. Correct flashing at these transitions — not just trim boards nailed over the top — is what actually keeps driving rain out of the wall assembly.
Factory-Finished vs. Field-Painted
Board and batten siding that arrives with a factory-applied finish holds its color and its moisture resistance far more consistently than siding painted on-site, especially in a damp climate where field-applied paint doesn't always cure the way it would in a drier region.
Why We Install James Hardie Fiber Cement — Not the Alternatives
We install James Hardie fiber cement board and batten siding exclusively. We don't install vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar board and batten. That's a deliberate standard, not a sales preference, and it's worth explaining why in a climate like this one.
| Material | How It Handles Salt Air & Driving Rain | How It Handles Moss Season |
|---|---|---|
| James Hardie fiber cement | Non-combustible, dimensionally stable, factory ColorPlus finish resists fading and moisture intrusion at the surface | Dense material sheds surface moisture well; correct rainscreen installation keeps moss from taking hold at seams |
| Cedar board and batten | Attractive but absorbs moisture at the grain; requires ongoing sealing to resist salt air and rain intrusion | Wood is a natural substrate for moss and mildew without consistent maintenance |
| Vinyl board and batten | Can warp or become brittle with temperature swings; seams are a common water entry point | Doesn't feed moss directly, but trapped moisture behind panels is a common problem |
| Wood-based composite (e.g., LP SmartSide) | Engineered wood core is more moisture-resistant than raw wood but still wood-based at heart | Edge and cut-end sealing is critical; any lapse becomes a moss and swelling risk over time |
Fiber cement isn't magic — it still has to be installed with the rainscreen, flashing, and fastening details above. But as a base material, it gives us a starting point that's dimensionally stable, doesn't feed mold and moss the way wood-based products can, and comes with a factory finish engineered to hold up in exactly this kind of coastal, high-rain climate. That's why it's the only board and batten product we put our name behind.
Our Process for a Custer Board & Batten Project
1. On-Site Assessment
We look at the existing wall assembly, current siding condition, moisture damage if any, and how the home is oriented relative to prevailing wind and rain. A house facing open farmland catches weather differently than one tucked behind a windbreak of trees, and that affects how we detail the installation.
2. Tear-Off and Prep
Old siding comes off, and we inspect the sheathing underneath for any rot or water damage that needs to be addressed before new siding goes on. Covering up a wet wall assembly with new siding just hides the problem.
3. Water Management Layer
Water-resistive barrier and rainscreen furring go in correctly before a single board is hung — this is the step that determines how the wall performs in year ten, not just year one.
4. Installation to Manufacturer Spec
Boards and battens go up following James Hardie's fastening schedule, with proper flashing at every window, door, and transition.
5. Final Walkthrough
We walk the finished job with the homeowner, and we stand behind the workmanship in addition to the manufacturer's product warranty.
Why a Crew That Already Works Custer Matters
Custer isn't downtown Ferndale, and it isn't Bellingham. Properties here tend to be more spread out, often with longer driveways, farm outbuildings, wells, septic systems, or fencing that a crew needs to work around carefully. A crew that's already worked in this specific area knows to ask about those things upfront instead of discovering them mid-project. Local familiarity also means we're realistic about scheduling around this region's weather windows — driving rain doesn't stop for a siding job, and knowing when to push a start date versus when conditions are workable is part of doing the job right.
There's also a simple accountability piece: a crew based in and around Ferndale is going to be around next year, and the year after, if a warranty question comes up. That matters more with exterior work than almost any other home project, because siding problems are usually invisible until they aren't.
Maintenance: What Custer Homeowners Should Actually Check
Correctly installed board and batten siding is low-maintenance, not no-maintenance. A short seasonal check goes a long way in this climate:
- Look along horizontal trim and window flashing for any dark staining that could indicate water tracking behind the siding
- Check for moss or algae buildup at north-facing walls and shaded areas, especially after the wet season
- Inspect caulk lines at trim and penetrations once a year — caulk is a maintenance item, not a permanent seal
- Rinse siding periodically with a garden hose (avoid high-pressure washing directly into seams) to keep salt residue and organic buildup from accumulating
- Watch for any panel movement or popped fasteners after high-wind weather events
What Affects the Cost of a Board & Batten Project
| Factor | Why It Matters |
|---|---|
| Current siding condition / tear-off scope | Rot or water damage found underneath old siding adds repair work before new siding can go on |
| Home size and wall complexity | More corners, dormers, and window trim means more flashing and cutting time |
| Rainscreen and water barrier installation | Doing this correctly takes longer than skipping it, but it's the difference in how the wall performs over time |
| Access and site layout | Longer driveways, outbuildings, or equipment on the property can affect staging and logistics |
| Color and finish selection | Factory ColorPlus finishes vary in cost by line and color depth |
We don't quote a project without seeing it first — the variables above shift too much from one property to the next for a generic number to mean anything. What we can tell you honestly is where the money goes and why, before you decide anything.
If you're considering board and batten siding for a home in Custer or elsewhere around Ferndale, we're happy to come take a look and walk you through what your specific property needs. The estimate is free, there's no pressure, and you'll get a straight answer about what's involved.