Blaine Board & Batten Siding, Built for Custer's Climate
Custer sits in that stretch of northern Whatcom County between Bellingham and the Canadian border, close enough to Drayton Harbor and the Strait of Georgia that salt-laced wind is a fact of life, and rural enough that a lot of homes still carry the farmhouse and barn-style lines that board and batten siding was originally built for. That combination — an agricultural, wide-open aesthetic paired with a genuinely harsh coastal-adjacent climate — is exactly why board and batten needs to be done right here, not just done to look right.
We install board and batten using James Hardie fiber cement systems exclusively. Not because it's the only option on the market, but because after years of working on homes in Blaine, Custer, and the surrounding county, it's the only vertical siding system we're willing to put our name behind in this specific climate.
What Custer's Climate Actually Does to Vertical Siding
Salt Air
Properties closer to Drayton Harbor and the Semiahmoo area get airborne salt that settles on exterior surfaces and accelerates corrosion of fasteners, hardware, and any metal trim components. Board and batten siding has more exposed vertical seams and more fastener points per square foot than lap siding, which means more places for that corrosion to start if the wrong materials or fasteners are used.
Driving Rain
Wind off the Strait doesn't just drop rain straight down — it drives it sideways into walls, and vertical board and batten profiles are more exposed to that horizontal load than horizontal lap siding because the battens create raised seams that catch wind-driven water directly. If the drainage plane behind the siding isn't installed correctly, that water finds its way behind the boards instead of running off them.
Moss Season
Whatcom County's wet season runs long, and wooded or shaded lots around Custer — common on the larger rural parcels out here — stay damp for months at a stretch. Moss and algae need sustained moisture to establish, and any siding material that absorbs water or holds it against the substrate gives moss exactly the foothold it needs. Board and batten's vertical battens create horizontal ledges at the top of each board where debris and moisture can collect if the detailing isn't done correctly.
Why Board & Batten Specifically Needs a Correct Install
Board and batten looks simple — wide boards, narrow battens over the seams — but the profile is less forgiving of installation shortcuts than standard lap siding. Every batten seam is a potential water entry point, every board end needs to be properly flashed and caulked, and the fastening pattern has to account for the fact that vertical boards move differently than horizontal ones as they expand and contract with temperature and moisture swings.
A correct board and batten installation includes:
- A continuous drainage plane (weather-resistant barrier plus a rain screen gap) behind the siding so any water that does get past the boards has somewhere to go
- Proper fastener spacing and type, matched to the fiber cement manufacturer's specifications, not generic construction staples or nails
- Flashing at every horizontal transition — window and door heads, roof lines, deck ledgers — so water is directed out and away from the wall assembly
- Sealed and back-primed board ends, particularly at inside and outside corners
- Battens fastened independently of the underlying panel where the system calls for it, so the assembly can handle moisture movement without cracking the finish
- Correct clearance from grade, decks, and roof lines to keep the bottom of the siding out of standing water and splashback
Skip any one of those steps and you don't get a failure right away — you get a slow one, showing up two or three winters later as staining, soft spots at the bottom courses, or moss creeping in along the batten seams.
Why We Use James Hardie for Board & Batten in This Area
James Hardie's vertical siding systems (HardiePanel vertical siding with HardieTrim battens, or the Artisan vertical collection for a more refined board profile) are engineered fiber cement — non-combustible, dimensionally stable, and manufactured with a factory-applied ColorPlus finish rather than field-applied paint. That matters more on a vertical profile than people expect, because factory-cured finish adheres and weathers more evenly than paint applied on site, and it doesn't rely on the installer's paint conditions on the day of the job.
Fiber cement also doesn't absorb water the way wood board and batten does, which directly addresses Custer's moss problem — moss needs a damp surface to colonize, and a material that sheds water rather than holding it gives moss far less to work with. It also doesn't feed insects or rot from the inside the way real wood board and batten can, which is a real consideration on older Custer properties where wood siding has been patched and repainted for decades.
We don't install vinyl board and batten, LP SmartSide, primed spruce, or cedar board and batten. Each of those has a legitimate place in the market, but they each come with trade-offs — moisture sensitivity, repainting cycles, warranty limitations, or long-term maintenance demands — that we don't think hold up well against this region's rain and salt exposure over a 20- or 30-year timeline. James Hardie's engineered fiber cement, backed by a strong transferable warranty and climate-specific HZ formulations, is what we've standardized on because it's what we're comfortable standing behind on homes we don't want to be called back to fix.
Comparing Vertical Siding Options for a Custer Home
| Factor | James Hardie Fiber Cement | Wood Board & Batten | Vinyl Board & Batten |
|---|---|---|---|
| Moisture & moss resistance | High — doesn't absorb water, sheds moisture | Low — absorbs moisture, prone to rot and moss | Moderate — doesn't rot, but seams and panel flex can trap moisture |
| Salt air / corrosion exposure | Low — non-metallic panel, corrosion-resistant fastener systems | Moderate — fine if maintained, but finish breaks down faster near salt air | Low, but can become brittle over time near coastal wind exposure |
| Finish durability | Factory-applied ColorPlus, long repaint interval | Field-painted, typically needs repainting every 3-7 years | Color molded through material, but fades and chalks over time |
| Fire resistance | Non-combustible | Combustible | Combustible, can warp near heat sources |
| Typical lifespan when installed to spec | 30+ years | 15-25 years with regular maintenance | 20-30 years, but appearance often degrades sooner |
Signs Your Custer Home's Board & Batten Needs Attention
If you're on an older property in Custer with wood or aging vinyl board and batten, here's what tends to show up first when the siding is losing the fight against the local climate:
- Green or black staining concentrated along the top edge of battens or board seams
- Soft, spongy boards near the bottom courses or anywhere close to grade or a deck
- Paint that's peeling or bubbling specifically along seams rather than across the whole wall
- Visible gaps or separation where battens meet the boards underneath them
- Fastener heads showing rust streaks running down the face of the siding
- Warping or cupping in individual boards, especially on the side of the house that takes the most wind-driven rain
None of these are urgent overnight, but they're the kind of thing that gets more expensive to fix the longer it sits, especially once moisture gets past the siding and into the wall assembly behind it.
Our Process for a Custer Board & Batten Project
Assessment
We start by walking the exterior and identifying which elevations take the most weather — in Custer that's usually whichever side of the house faces the open wind path off the water — and checking the current siding, trim, and flashing conditions before recommending anything.
Product & Profile Selection
Board and batten works well with the rural and farmhouse-style architecture common around Custer, and James Hardie offers a range of board widths and ColorPlus finishes that fit that look without sacrificing the moisture performance this climate demands.
Installation
Our crews follow James Hardie's published installation specifications for drainage planes, fastening, and flashing on every job — not as an upsell, but because that's the baseline for the warranty to mean anything and for the siding to actually perform the way it's designed to.
Final Walkthrough
We go over the completed work with you, including how the drainage and flashing details were handled at windows, corners, and grade transitions, so you know exactly what's protecting your walls.
Why a Crew That Already Works Custer Matters
Whatcom County's building requirements and this stretch of coastline's wind and rain exposure aren't the same as what a crew working forty miles inland deals with every day. A crew that already works Custer and the greater Blaine area knows which elevations typically need extra flashing attention, how far siding needs to sit off grade given the wet season here, and what moss and algae pressure actually looks like on a wall two winters after installation — not just in a manufacturer's brochure. That local pattern recognition is the difference between a board and batten job that looks good at handoff and one that still looks good in year ten.
If you're considering board and batten siding for a home in Custer or anywhere around Blaine, we're happy to take a look and talk through what your specific property needs — no pressure, no obligation. Reach out for a free estimate using the form below.