Custer Board & Batten Siding — Local Whatcom County Crew

Board & Batten Siding in Custer: A Look That Fits the Landscape

Custer sits close enough to the water that homeowners here feel the difference between "coastal Whatcom County" and inland Lynden on almost any wet, windy week. Board and batten siding has become a popular choice in this stretch of the county because it suits the mix of farmhouses, newer builds, and shop-style outbuildings you find between Lynden and the Custer area — the vertical lines read as clean and modern on a new build, or classic and agricultural on an older property, depending on the trim and color chosen around it.

But the look is only half the story. Board and batten is a different siding system than lap siding, not just a different pattern, and it behaves differently in wet, salt-tinged air. When it's installed correctly for this specific area, it holds up for decades. When it's installed like a generic siding job, the seams and battens become the first place moisture and moss find a way in. This page is about doing it right for a Custer home specifically — not board and batten in the abstract.

What Custer's Climate Actually Does to Siding

Custer's location puts homes closer to salt-laden air off the Strait of Georgia and Birch Bay than most of Lynden proper. That salt air doesn't just smell like the coast — it accelerates corrosion on exposed fasteners, thin metal trim, and any hardware that isn't rated for it. Combine that with Whatcom County's driving winter rain, which comes in sideways more often near open water, and you get a siding system that's tested on two fronts at once: rain intrusion behind the cladding, and metal fatigue on anything holding it up.

Then there's moss. Long, cool, damp stretches of the year mean north- and west-facing walls in shaded or tree-lined Custer lots stay wet longer than the same wall would in a drier part of the state. Moss and algae don't just look bad — they hold moisture against the siding surface, and on the wrong substrate that moisture eventually works its way behind the material.

None of this means board and batten is a bad choice for Custer. It means the material, the fasteners, and the drainage details behind it all have to be chosen with this specific combination of salt air, wind-driven rain, and moss pressure in mind — not with a generic "Pacific Northwest" spec that doesn't account for the coastal proximity.

Why Vertical Siding Is More Exposed Than People Expect

Board and batten's vertical seams run with the water instead of shedding it in overlapping courses the way lap siding does. That's not automatically a weakness, but it means the drainage plane behind the boards and the quality of the seams matter more, not less. A batten that's face-nailed straight through both the batten and the board beneath it, with no room to move, is a common shortcut that causes splitting and open seams within a few winters in a climate like this one.

Why Board & Batten Needs to Be Installed Differently Than Lap Siding

A correct board and batten installation is built in layers, and every layer earns its place:

• A weather-resistive barrier applied without gaps or shortcuts at penetrations, windows, and doors
• A rainscreen gap (typically furring strips) behind the panels so any moisture that gets past the surface can drain and dry instead of sitting against the wall
• Proper flashing at every horizontal transition — window heads, roof-to-wall intersections, and the base of the wall
• Battens fastened to allow for the natural expansion and contraction of the material underneath, not pinned rigid
• Corrosion-resistant fasteners appropriate for a near-coastal environment

Skip the rainscreen or use the wrong fastener, and the siding can look fine for a year or two while the real damage happens where you can't see it — behind the boards, at the sheathing.

James Hardie Board & Batten: The System We Install

We install James Hardie fiber cement exclusively, and for board and batten profiles that means Hardie's panel-and-batten systems finished with the factory ColorPlus coating. A few things about that combination matter specifically for a Custer home:

Non-combustible core. Fiber cement doesn't feed a fire the way wood-based sidings can, which matters for insurance conversations as much as safety.

Factory-applied finish. ColorPlus finish is baked on in a controlled environment and backed by its own finish warranty, which means far less color fade and far fewer touch-up cycles than field-painted siding — important on a material that's going to sit through a lot of grey, wet Whatcom County weather before it ever fully dries out between storms.

Engineered for moisture, not just resistant to it. Hardie's HZ product lines are engineered around climate zones, including the wet Pacific Northwest, rather than being a one-spec-fits-all product. That matters more here than in a drier region, because the margin for a moisture mistake is smaller.

We don't install LP SmartSide, vinyl board and batten, or primed wood battens. Each of those has a legitimate market — but each also comes with a maintenance burden, a moisture vulnerability, or a warranty structure that we're not willing to put our name behind on a coastal-influenced property like the ones we work on in Custer. That's a standard we hold on every job, not a sales pitch built for this page.

Comparing Board & Batten Material Options

Material	Moisture behavior near salt air	Long-term maintenance	Fire resistance
James Hardie fiber cement	Engineered for wet climates; stable when rainscreen-installed	Low — factory finish, no repainting cycle for years	Non-combustible core
Primed wood board & batten	Absorbs moisture at cut ends and seams; prone to swelling	High — repainting and caulking on a recurring cycle	Combustible
Vinyl board & batten	Doesn't rot, but can warp and doesn't stop moisture behind it	Low, but limited repair options when damaged	Combustible, can deform in heat
LP SmartSide (engineered wood)	Vulnerable at cut edges and seams if sealant fails	Moderate — edge sealing and inspection needed	Combustible

This isn't a claim that the other materials are unsuitable for every application — it's why, for the climate this specific job sits in, we've standardized on one system rather than offering all of them and hoping the homeowner picks correctly.

Our Installation Process, Step by Step

The process we run for a Custer board and batten job follows the same sequence every time, because skipping a step is where problems start:

1. On-site assessment — checking existing wall condition, sheathing, and any moisture damage behind current siding before quoting the job
2. Tear-off and inspection — removing old siding and inspecting the sheathing underneath for rot or soft spots before anything new goes up
3. Weather-resistive barrier and rainscreen installation — the layer that does the real work protecting the wall assembly
4. Flashing at all penetrations — windows, doors, vents, and roof lines
5. Panel and batten installation — fastened to manufacturer spec with corrosion-resistant fasteners and correct spacing for expansion
6. Trim, caulking, and final detail work — the finishing details that keep water from finding a way in at corners and transitions
7. Site cleanup and walkthrough — going over the finished job with the homeowner before we call it done

What Correct Board & Batten Installation Should Include

• A documented rainscreen gap behind the siding, not panels fastened flat to the sheathing
• Flashing installed at every window, door, and roof-to-wall transition — not just caulk
• Corrosion-resistant fasteners rated for a near-coastal environment
• Manufacturer-specified fastener spacing and batten fastening that allows for material movement
• Factory-finished panels rather than field-painted primed boards
• A clear plan for how water sheds at the base of the wall and away from the foundation

If a contractor's proposal doesn't mention most of these items, it's worth asking directly how each one is being handled before signing anything.

Why a Lynden-Based Crew That Works Custer Matters

We're based in Lynden, and Custer is part of the territory we already work regularly — not a stretch assignment. That matters in a few practical ways. We already know how much closer this area sits to salt air compared to homes further inland, so we're not guessing at fastener and flashing specs for the first time on your project. We're familiar with Whatcom County permitting requirements for exterior work, which keeps the paperwork side of the job from becoming a delay. And because we're local, warranty callbacks and any follow-up questions after the job don't involve waiting on a crew that has to drive in from out of the area.

A siding job that's installed to spec should need very little from the homeowner for years — but when a question does come up, having a crew that's still in the area and still stands behind its own work is worth more than a slightly lower bid from a company that's already moved on to the next region.

Maintenance & Longevity Expectations

A correctly installed James Hardie board and batten system in a Custer microclimate should require very little from a homeowner year to year: periodic rinsing to keep moss and organic growth from taking hold on shaded walls, an occasional visual check of caulking at trim and penetrations, and attention to any landscaping that's grown up close enough to keep a wall damp longer than it should be. That's a meaningfully lighter maintenance load than a repaint cycle on wood siding or edge-sealant checks on engineered wood — one of the practical reasons this system holds up well in a climate that doesn't give siding much of a break.

If you're weighing board and batten siding for a home in the Custer area, we're happy to take a look at the property and walk through what a correct installation looks like for your specific wall conditions and exposure. Reach out for a free, no-pressure estimate using the form below.