Glenhaven Siding Board & Batten Siding for Cordata Homes
Cordata sits in a part of Glenhaven where a home's exterior takes a real beating over the years — not from any one dramatic storm, but from the slow, steady combination of salt-tinged marine air, wind-driven rain that comes in sideways more often than straight down, and a moss season that can run eight or nine months out of twelve on shaded walls. Board and batten has become a popular choice for homes in this area because of how it looks — the vertical lines read as clean and modern on newer builds and as classic farmhouse on older ones — but the profile itself is more demanding than a standard lap siding job. Every seam where a batten covers the gap between two boards is a place water can try to work its way behind the wall, and in a climate like Whatcom County's, how those seams are built matters as much as which product ends up on the house.
We install James Hardie fiber cement board and batten exclusively in Cordata and the rest of our Glenhaven service area, and we build every seam, fastening pattern, and flashing detail around what this specific climate does to a wall over ten, twenty, and thirty years — not around what looks good on the day the crew packs up.
What Cordata's Climate Asks of a Board & Batten Wall
Wind-Driven Rain Against Vertical Seams
Rain in this part of Whatcom County rarely falls straight down for long. Wind pushes it sideways against exterior walls, and a vertical siding profile with battens running the full height of the wall gives that wind-driven rain a lot of joint length to test. A batten that's face-nailed too tight, without room to move, or sealed with caulk instead of properly lapped and back-primed, turns into a wick that pulls moisture toward the fastener line instead of shedding it back off the wall.
Salt Air and Fastener Corrosion
Homes in Cordata deal with the same steady salt exposure that affects most of this part of Whatcom County, and that exposure is hard on any exposed metal. Board and batten uses more fasteners per square foot than a standard lap profile, since both the boards and the battens over them need to be secured — which means getting the fastener spec right, corrosion-resistant, correctly sized, correctly spaced, carries more weight here than it does on most other siding profiles.
A Moss Season That Doesn't Really End
Shaded and tree-covered walls around Cordata hold onto dampness a lot longer than sun-exposed ones, and that dampness is exactly what moss and mildew need to take hold. A batten set tight against a board with no room to breathe traps that moisture right where it can't dry out, which over a few wet seasons turns into staining at the seams, softening substrate, and finish failure right where the batten meets the board.
Why Product Choice Matters More on This Profile
Board and batten amplifies whatever weaknesses a siding material already has, because there are more seams and more exposed material edge for weather to work against. 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 legitimate products, and other contractors install them competently — but on a profile with this many joints, in a climate this consistently wet, we standardized on one system we can stand behind completely.
| Material | Behavior at Batten Seams | Maintenance in This Climate | Realistic Lifespan |
|---|---|---|---|
| James Hardie fiber cement | Dimensionally stable; doesn't swell or cup at the joint | Low; factory finish resists moss and fading | 30+ years with proper install |
| LP SmartSide (engineered wood) | More sensitive to moisture at cut edges and fastener holes | Moderate; edge sealing needs regular upkeep | 15-25 years, climate-dependent |
| Vinyl | Can warp or gap at battens in temperature swings; seams less rigid | Low, but hidden moisture problems are hard to catch early | 20-30 years, variable |
| Cedar | Absorbs moisture readily at every seam without consistent sealing | High; refinishing or resealing on a recurring cycle | 15-25 years with consistent upkeep |
James Hardie's fiber cement core doesn't expand and contract with moisture the way wood-based products do, which is exactly the property that matters most on a profile built almost entirely out of vertical seams. The factory-applied ColorPlus finish also means the cut edges we prime on site are the exception rather than the rule, unlike field-painted materials where the whole wall's finish depends on paint quality holding up outdoors year after year.
What a Correct Board & Batten Install Actually Involves
The finished look of board and batten is simple — vertical boards, battens over the seams — but a correct install has a lot going on behind that surface that most homeowners never see:
- House wrap or weather-resistive barrier installed and lapped correctly before any siding goes up
- A drainage gap or rainscreen behind the siding so moisture that does get past the surface can dry out instead of sitting against the wall
- Boards fastened with corrosion-resistant fasteners at the manufacturer's specified spacing, not just enough to hold the board in place
- Battens set with the clearance Hardie's install spec calls for, not caulked tight, so the wall can shed water instead of trapping it
- Properly flashed and lapped transitions at windows, doors, corners, and the base of the wall, where a vertical run meets a horizontal surface
- Factory-cured ColorPlus finish preserved by cutting boards face-down and priming any field-cut edges before installation
Skip any one of these steps and the wall can still look right for a year or two. The problems that come from skipping them — staining at the seams, soft spots near the base, finish failure along the battens — take a few wet seasons to show up, which is exactly why they're easy for a rushed install to get away with until the homeowner is the one living with it.
Our Process for a Cordata Board & Batten Project
Walkthrough and Assessment
We start by looking at the specific walls involved — which ones take the weather head-on, which are shaded and slower to dry, and whether the existing wall assembly already has moisture issues that need addressing before new siding goes up. Board and batten installed over a wall with hidden rot or poor drainage just buries the same problem under new material.
Detailing the Plan Before Install Day
We work out batten spacing, corner details, and how the siding will meet windows, trim, and rooflines before crews start cutting material. On a profile with this many seams, settling the details on paper first cuts down on field improvisation, which tends to be where corners get cut on a rushed job.
Installation to Manufacturer Spec
Every fastener, gap, and flashing lap follows James Hardie's published installation requirements for this climate zone, not a generic national standard. That's part of what keeps the manufacturer's warranty intact, and it's a big part of why the wall performs the way it's supposed to for decades instead of years.
Final Walkthrough
We walk the finished job with you, cover what maintenance actually looks like for board and batten — there's very little with this material, but it's worth knowing — and make sure you know what to look for if you ever want to check the wall yourself down the road.
Why Hire a Crew That Already Works Cordata
Board and batten rewards experience with this specific climate in a way a lot of siding profiles don't, because the failure points are subtle and slow to show up. A crew that has installed this profile across Cordata and the rest of Glenhaven through multiple wet seasons has already seen which wall orientations need extra attention because of shade and tree cover, how much clearance a batten actually needs in a climate this damp versus what a generic install guide suggests, and where a rainscreen gap earns its keep versus where it's optional. That kind of judgment doesn't show up on a spec sheet — it's the difference between a board and batten wall that still looks and performs the same in fifteen years and one that's showing seam staining by year five.
Cost Factors for Board & Batten in This Area
Board and batten typically costs more per square foot than standard lap siding, mainly because of the added material — battens on top of boards — and the extra labor involved in fastening and detailing two layers instead of one. Beyond the base material, a few things move the price on a given Cordata home:
| Factor | Why It Matters |
|---|---|
| Wall height and complexity | More corners, dormers, and transitions mean more cuts and flashing details |
| Existing wall condition | Rot or moisture damage found during tear-off needs repair before new siding goes up |
| Batten spacing and reveal | Tighter spacing uses more material and more fastening labor |
| Trim and window detailing | More openings mean more flashing and finish work around each one |
| Access and site conditions | Tight lots or limited access can add labor time |
We'll walk your specific home and give you real numbers rather than a rough estimate based on square footage alone — two houses in Cordata with the same footprint can end up with very different board and batten costs depending on how many of these factors are actually in play.
Getting It Right the First Time
Board and batten is not a forgiving profile to redo. Because the battens cover the seams between boards, correcting a bad install usually means pulling battens, boards, or both, rather than a quick patch. That's part of why we treat the planning and detailing phase of these projects as seriously as the install itself — the cost of getting it right the first time is a lot lower than the cost of tearing out a wall that was installed wrong.
If you're weighing board and batten for a home in Cordata, we're happy to walk the property, talk through what your specific walls need given their orientation and exposure, and give you a straightforward, no-pressure estimate. There's a form below — reach out and we'll set up a time to take a look.