Custer Why Board & Batten Fits Lynden's Character and Climate
Board and batten has a long history in Whatcom County's farm country, and Lynden is no exception. The vertical lines suit the barns, outbuildings, and farmhouse-style homes that give this part of the county its look, and that's part of why we get asked about it so often here. But board and batten isn't just a style choice — the way it's built changes how a wall handles water, and in a town that sits close to the coast and gets its share of wind-driven rain, that matters as much as the appearance.
This page is specifically about board and batten siding for homes in and around Lynden. We're not going to give you a generic rundown of the product — we'll walk through what this climate actually does to a vertical board siding job over time, what a correct installation looks like here, and why a crew that already works this area is worth something when you're picking who does the work.
What Lynden's Weather Does to Siding Over Time
Salt Air and Wind Off the Strait
Whatcom County sits close enough to Georgia Strait and the Salish Sea that salt-laden air is a real factor on the west-facing and north-facing walls of a lot of homes in this area, Lynden included on breezier days. Salt air accelerates corrosion on fasteners and metal trim, and it can speed up the breakdown of paint films that aren't built to handle it. It's a slower process than what you'd see right on the water, but it's cumulative — a siding system that isn't specified with this in mind will show it in fastener staining and finish wear years before it should.
Driving Rain and Wind-Driven Moisture
Rain here doesn't always fall straight down. Wind-driven rain gets pushed sideways into wall assemblies, and vertical board siding has more seams per square foot than a horizontal lap profile — every batten joint is a place water can be pushed if the assembly behind it isn't built to shed and drain properly. This is the single biggest reason board and batten installs go wrong: the siding looks fine from the curb, but the water management behind it wasn't built for actual wind-driven conditions.
A Moss Season That Doesn't Really End
Between the rainfall totals and the tree cover common on Whatcom County lots, moss and algae growth on north-facing and shaded walls is close to a year-round condition rather than a seasonal one. Moss holds moisture against a wall surface, and on the wrong substrate that constant dampness shortens the life of the siding and its finish. The product and the finish both need to be able to take that without softening, swelling, or losing their color.
What a Correct Board & Batten Installation Actually Involves
Rainscreen and Drainage Plane
A board and batten wall in a climate like this should be built with a drainage gap behind the siding — furring strips or a purpose-built rainscreen product that lets any water that gets past the cladding drain and dry out instead of sitting against the sheathing. Skipping this step is the most common shortcut we see on vertical siding jobs, and it's the one that causes the most damage down the road, because the problem is invisible until the wall is opened up.
Batten Spacing and Fastening
Batten spacing has to account for the width of the underlying panel or board plus enough overlap to cover panel movement without gapping. Fastener placement matters just as much — fasteners driven at the wrong depth or spacing can split fiber cement board or create pathways for water at the fastener head. This is a detail-heavy install, not a quick one, and it's where experience with the specific product shows.
Sealant and Flashing Details
Every horizontal transition — window and door heads, trim boards, the base of the wall — needs proper flashing, not just caulk. Caulk is a maintenance item that will eventually fail; flashing is the permanent line of defense. Given how much wind-driven rain this area sees, we don't treat sealant as the primary water barrier anywhere on the wall.
Why We Install Only James Hardie Vertical Siding for This Application
We install James Hardie fiber cement exclusively — we don't run LP SmartSide, vinyl, Cemplank, Allura, or wood board and batten on our crews, and it's worth explaining why, especially for a vertical profile where the seams and joints are doing more work.
Fiber cement doesn't absorb and swell the way engineered wood products can at a cut edge or fastener penetration, which matters on a profile with this many vertical joints. It's non-combustible, which matters increasingly for insurance and code considerations. And Hardie's ColorPlus factory finish is baked on and warrantied against fading and flaking, which counts for more here than in a drier climate, because sun exposure alternates with long damp stretches that are hard on field-applied paint. Hardie also builds a version of its product line — the HZ5 formulation — specifically engineered for cold, wet climates like the Pacific Northwest, which is a meaningful difference from a general-purpose fiber cement board.
We're not going to tell you vinyl or engineered wood board and batten can't be installed correctly — they can. But between the moisture load this area sees, the moss exposure, and the number of joints in a vertical profile, we standardized on the one product system that gives us the least to worry about ten and twenty years out. That's the whole reason we only offer one option.
Our Process for Lynden Board & Batten Projects
The process doesn't change much from house to house, but the details we check are specific to this area's conditions.
- Walk-through and assessment. We look at wall orientation, shade and moss exposure, existing moisture damage, and window and door flashing conditions before we quote anything.
- Tear-off and sheathing check. Once the old siding is off, we check the sheathing for hidden rot, especially on north and west walls, before anything new goes up.
- Weather barrier and rainscreen install. This is the step that determines how the wall performs in driving rain, and it's not visible once the job is done — it's also not a step we shortcut.
- Board, batten, and trim installation. Hardie vertical panel or board-and-batten profile, installed to manufacturer spec for fastener pattern and spacing, with proper flashing at every horizontal transition.
- Caulking, paint touch-up, and final inspection. We walk the finished job with you before we call it done.
Cost Factors for Board & Batten Siding in This Area
Every home is different, so we don't quote off square footage alone. These are the factors that actually move the number on a Lynden-area board and batten project:
| Factor | Why It Matters Here |
|---|---|
| Wall height and story count | Vertical board panels and battens take longer to install correctly at height, and scaffolding adds time |
| Existing siding removal | Tear-off and any sheathing repair from hidden moisture damage add labor before the new wall goes up |
| Rainscreen/drainage detailing | A full furring or rainscreen system costs more up front than direct-applied siding, but it's what makes the assembly perform in this climate |
| Trim and window/door count | More openings means more flashing details, which is where labor time concentrates on a board and batten job |
| Color and finish selection | Standard ColorPlus colors vs. custom finishes affect material cost |
Board & Batten vs. Horizontal Lap for This Climate
We get asked which profile handles Whatcom County weather better. Both can perform well when built correctly — the honest answer is that they have different sensitivities:
| Consideration | Board & Batten | Horizontal Lap |
|---|---|---|
| Water shedding | Relies on properly detailed vertical joints and drainage plane | Naturally sheds water via overlapping courses |
| Wind-driven rain exposure | More seams to detail correctly | Fewer horizontal seams, generally more forgiving |
| Moss and algae visibility | Vertical lines can show streaking differently on shaded walls | Horizontal shadow lines can trap and hold debris in the lap |
| Style fit for farmhouse/agricultural exteriors | Strong match | Also common, more traditional look |
Maintaining Board & Batten Siding in Whatcom County
Even a correctly installed Hardie board and batten wall benefits from basic upkeep given the local conditions. A simple annual routine goes a long way:
- Rinse moss and algae growth off north-facing and shaded walls before it builds up — a soft wash is enough; avoid high-pressure washing directly into seams
- Keep gutters clear so overflow doesn't run down the wall face and concentrate moisture at battens
- Trim back vegetation and tree limbs that keep a wall section shaded and damp longer than the rest of the house
- Check caulking at trim and window transitions yearly and have any cracked or missing sealant addressed before the wet season
- Watch for fastener staining, which can be an early sign of moisture reaching the fastener head
- Have any impact damage or cracked boards repaired promptly rather than waiting — a small opening in the cladding is a moisture entry point in this climate
Why Hiring a Crew That Already Works Lynden Matters
Board and batten is a detail-sensitive install, and the details that matter shift by region. A crew that hasn't dealt with the combination of salt air, wind-driven rain off the Strait, and a moss season that runs most of the year is more likely to build a wall that looks right on installation day but doesn't hold up the way it should. We work this stretch of Whatcom County regularly, which means we've already seen how these walls age here — what fails first, what holds up, and what the local building department expects on permitted work.
That local familiarity also shows up in smaller ways: knowing which wall orientations on a typical Lynden lot need the most attention to moss and shade exposure, and sizing the job realistically around the weather windows this area actually gets for dry installation conditions.
If you're weighing board and batten for a home in the Lynden area, we're glad to come take a look, walk the exterior with you, and give you a straight assessment of what your walls need — no pressure, no generic sales pitch. Reach out through the form below to set up a free estimate.