Bellingham Board & Batten Is Back — But the Material Underneath Matters More Than Ever
Board and batten has been showing up on new builds and remodels all over Whatcom County for the last several years — clean vertical lines, a strong farmhouse or modern-craftsman look, and a nice contrast when it's paired with lap siding or stone on the same elevation. It's a good look. The problem is that board and batten as a style got popular again largely through vinyl and engineered wood products that were never built for the Pacific Northwest's particular combination of driving rain, salt-laden air off Bellingham Bay, and a moss season that can run eight months out of the year.
The pattern itself — vertical boards with a narrower strip covering each seam — is just a design choice. What actually determines whether it holds up on a Bellingham house is the substrate underneath it, how the seams are detailed, and how the assembly handles water that gets behind it, because water always eventually gets behind it. This page is about the material and installation choices that make board and batten last here, not just look good in the first year.
Why This Style Is a Harder Test for a Siding Product
Lap siding sheds water by design — each course overlaps the one below it, so water runs down and off. Board and batten works differently. The vertical seams between boards, even when covered by a batten strip, create more opportunities for water to sit against a joint and work its way in, especially in a climate where wind-driven rain comes in sideways off the water and moss holds moisture against the wall for weeks at a time.
That means the material choice for board and batten isn't cosmetic — it's structural. A substrate that swells, delaminates, or wicks moisture at the seams will show problems in exactly the places board and batten has the most seams: the battens themselves. We've standardized on James Hardie fiber cement for this reason. It's dimensionally stable, it doesn't swell and shrink the way wood-based products do with our humidity swings, and it's engineered specifically for high-moisture climates like ours.
What We See Go Wrong With Other Substrates
- Engineered wood (OSB-based) board and batten: holds up fine until a seam or cut edge takes on moisture, at which point the wood fiber swells and the board loses its shape permanently — no amount of repainting fixes swollen fiber.
- Vinyl board and batten: the panels are hollow-backed and rely on tight, factory-formed seams; on a real wall with window returns, corners, and trim transitions, field cuts create gaps that don't reseal, and vinyl gets brittle in a cold snap.
- Untreated or primed cedar and spruce boards: beautiful when new, but bare wood board and batten in Whatcom County needs recoating on a cycle most homeowners underestimate, and the battens — being the thinnest, most exposed part of the assembly — are usually the first place rot shows up.
James Hardie's Board & Batten Systems
Hardie doesn't make one board-and-batten product — there are a few ways to build the look correctly, and the right one depends on the house.
HardiePanel Vertical Siding with Batten Strips
This is the most common approach: large fiber cement panels installed vertically, with HardieTrim battens fastened over each panel seam. The panel itself is the weather barrier; the batten is largely decorative and covers the joint. Panel joints get properly flashed and lapped behind the water-resistive barrier, so the wall isn't depending on caulk alone to keep water out.
Individual HardieTrim Boards as the "Board," with Narrower Battens
On some designs, particularly where a wider board reveal is wanted, individual trim boards are run vertically with a gap, then covered by battens — closer to true historic board and batten proportions. This takes more layout and fastening precision than a panel system and is where installer experience matters most.
Engineered for Northern Climates: HZ5
James Hardie makes climate-specific product formulations — HZ5 for regions with freeze-thaw cycles and sustained moisture exposure, HZ10 for hot, humid southern climates. Whatcom County falls in HZ5 territory. It's a detail most siding salespeople never mention, but it affects how the product is engineered to handle moisture absorption and freeze cycling, and it's one more reason generic siding literature written for a different climate doesn't tell the whole story.
ColorPlus Factory Finish vs. Field Painting
Board and batten lives or dies visually at the seams, and that's exactly where field-applied paint is weakest — brush and roller work at a butt joint or batten edge rarely gets the same mil thickness and adhesion as a factory-baked finish. ColorPlus is Hardie's factory finish process: color is baked on in a controlled environment before the boards ever reach the site, with a finish warranty that runs alongside the product warranty.
| Finish | What Happens at Seams & Battens | Repaint Cycle |
|---|---|---|
| ColorPlus factory finish | Consistent coverage on every edge and cut, touch-up formula available for job-site cuts | Not required for the life of the finish warranty |
| Field-applied paint on fiber cement | Depends entirely on painter's prep and coverage at joints and battens | Typically 7-10 years in this climate |
| Field-applied paint or stain on wood board and batten | Uneven absorption at end grain and batten edges accelerates wear right where it matters most | Often 3-5 years on exposed elevations |
Installation Details That Actually Determine Longevity
The material only performs as well as it's installed. Board and batten in particular punishes shortcuts, because there are more fasteners, more seams, and more trim-to-field transitions than a standard lap job.
Rain Screen / Furring
On a house facing direct weather — which describes a lot of lots near the water or up against the hillsides around Bellingham — running vertical furring strips behind the siding to create a drainage gap gives any water that does get past the surface a path to drain and dry out, instead of sitting against the back of the panel or the wall sheathing.
Batten Fastening
Battens need to be face-nailed or blind-nailed per Hardie's published fastener schedule, into framing or furring — not just tacked to the panel below. Under-fastened battens are one of the most common failure points we see on board and batten jobs done by crews unfamiliar with the system.
Flashing at Every Horizontal Transition
Window heads, water tables, and any place board and batten meets a different material or a roofline need step or Z-flashing behind the siding, not just a bead of caulk on top of it. Caulk is a maintenance item; flashing is permanent.
Clearance and Gaps
Hardie specifies minimum clearance from grade, roof lines, and decks, and specific gapping at inside corners and trim. On board and batten, the vertical boards also need proper expansion clearance so they aren't butted so tight they can't move seasonally without stressing the joint.
What This Costs to Do Right
Board and batten generally runs somewhat higher than a straightforward lap siding install on the same house, mainly because of the extra trim material and labor at every seam.
| Cost Factor | Why It Moves the Price |
|---|---|
| Batten material and fastening labor | Every seam gets a separate trim piece, cut, and fastened — roughly double the labor of a lap-only elevation |
| Rain screen / furring | Adds material and install time but is what keeps the assembly performing over decades in a wet climate |
| Full or partial elevation | Many homeowners use board and batten as an accent on gables or entries rather than the whole house, which changes the total materially |
| Trim and corner detailing | Board and batten shows corner and window-return quality more than lap siding does, so trim carpentry time is a real line item |
Maintenance Expectations
Correctly installed Hardie board and batten with ColorPlus finish is genuinely low-maintenance — not zero-maintenance. A yearly walk-around is worth doing:
- Check that gutters and downspouts are directing water away from board-and-batten elevations, especially any that face prevailing wind and rain.
- Look at batten edges and butt joints for any caulk that's cracked or pulled away, and have it addressed before a wet season sets in.
- Keep an eye on north-facing and shaded elevations for moss and algae growth, which is common in Whatcom County's damp winters and is a surface issue on fiber cement, not a structural one, but should be washed off gently rather than left to build up.
- Confirm soil, mulch, or plantings haven't crept up to meet the bottom edge of the siding, which traps moisture against the material.
Questions Worth Asking Before You Hire
Board and batten is one of the styles where the gap between a good installer and an inexperienced one shows up fastest, because there's nowhere for sloppy layout or fastening to hide.
- Ask to see photos of board and batten specifically, not just lap siding — it's a different install discipline.
- Ask whether they're running a rain screen behind the boards on exposed elevations.
- Ask which Hardie product line and climate zone rating (HZ5 for our area) they're quoting, not just "Hardie board."
- Ask how inside corners, window returns, and the transition to any water table or trim board will be detailed and flashed.
- Get the fastener schedule and batten spacing in writing as part of the estimate, not just a total square footage number.
If you're weighing board and batten for a Bellingham home — whether as a full facade or as an accent on gables and entries — we're glad to walk the property, talk through where it fits and where a rain screen or extra flashing detail is worth the cost, and put together a straightforward, no-pressure estimate.