Lynden Siding Board & Batten Siding Built for Kendall's Foothill Climate
Kendall sits in the foothill country northeast of Lynden, and homes out here take a different kind of weather beating than a house downtown. The marine air that moves through Whatcom County carries salt-tinged moisture well inland, driving rain comes in sideways during the wet months, and shaded, tree-lined lots stay damp long enough to grow a serious moss and algae problem on north- and east-facing walls. Board and batten siding can look outstanding on the farmhouse and rural-style homes common around Kendall, but it only performs as well as the materials and the installation behind it. Get either one wrong in this climate and you're repainting, recaulking, or replacing boards years ahead of schedule.
What Board & Batten Siding Actually Is
Board and batten is a vertical siding style: wide flat panels installed side by side, with narrow strips called battens covering the seams between them. It's one of the oldest siding patterns in America, originally used on barns and outbuildings because it was fast to install and shed water reasonably well when built with solid wood. Today it's popular as a full exterior treatment on modern farmhouse-style homes, or as an accent on gables, dormers, and entry walls paired with horizontal lap siding on the rest of the house.
Where It Fits on a Kendall Property
We see board and batten used well in three ways around Kendall: as the full siding system on newer farmhouse-style builds, as a gable and dormer accent on homes otherwise sided in lap siding, and on porches, shop buildings, and outbuildings where the vertical look reads as more "barn," fitting the rural character of the area. All three applications are legitimate — the difference is whether the installation underneath is built for this climate or borrowed from a drier one.
Why Kendall's Climate Changes What "Correct" Looks Like
Board and batten has more vertical seams than lap siding, and every one of those seams is a potential water entry point if it's not detailed correctly. In a drier climate, a contractor can get away with sloppier batten spacing or a missing drainage gap for years before it shows. Around Kendall, that same shortcut usually surfaces much faster.
Driving Rain and Vertical Seams
Wind-driven rain hits vertical siding differently than horizontal lap siding — it can push moisture sideways into batten joints instead of just running down the face. The battens need to lap the panel edges by the correct margin, and the panels need room to move seasonally without opening a gap at the seam.
Moss Season and Trapped Moisture
Shaded, tree-covered lots — common around Kendall — stay damp for long stretches of the year, which is exactly the environment moss and algae need. Siding that traps moisture behind it, rather than letting it drain and dry, feeds that growth and accelerates rot at the sheathing. A drainage gap behind the siding isn't optional here; it's the difference between a wall that dries out between storms and one that stays wet all winter.
Salt-Tinged Air and Fasteners
Even well inland from the water, Whatcom County's marine air pattern carries enough salt content to accelerate corrosion on the wrong fastener material. Board and batten depends on a lot of face fasteners through the battens — using the wrong nail or screw here shows up as rust streaking down the siding within a few seasons.
The James Hardie Board & Batten System We Install
We install James Hardie fiber cement exclusively — no vinyl, no engineered wood, no primed cedar or spruce board and batten. For this style, that means HardiePanel vertical siding paired with HardieTrim battens, both manufactured from fiber cement and finished together so the color matches across panel and trim.
A few specifics worth knowing:
- Fiber cement doesn't absorb water the way wood-based products do, which matters directly in a climate with a long wet season and heavy moss pressure.
- James Hardie's ColorPlus finish is a factory-applied, baked-on finish rather than field-applied paint, which holds color and resists the fading and peeling that field paint struggles with in the Pacific Northwest.
- Hardie engineers its HZ10 product line specifically for the moisture and freeze-thaw conditions of this region, rather than a one-size-fits-all national spec.
- It's non-combustible, which matters for anyone with outbuildings, wood stoves, or rural fire exposure common on Kendall acreage.
What a Correct Installation Actually Involves
Drainage Plane and Rainscreen Gap
Behind every board and batten installation we do, there's a weather-resistive barrier and a drainage gap that lets any moisture that gets past the siding drain out and the wall cavity breathe. Skipping this gap is the single most common shortcut we see on older or poorly done board and batten jobs, and it's the main reason those walls develop rot and moss faster than they should.
Fastening Pattern
Battens and panels have to be fastened per Hardie's specification — the right fastener type and length, spaced correctly, and not driven so tight that the panel can't move seasonally. Over-fastened board and batten buckles and cracks at the seams within a few years.
Flashing, Clearance, and Caulking
Every horizontal transition — roof lines, window and door heads, deck ledgers — needs proper flashing so water is directed out and away from the wall, not behind it. Siding also needs correct clearance from grade, roofing, and hardscape (soil, concrete, and patios splash moisture back up onto the bottom courses far more than most homeowners expect). Caulking is applied only where the manufacturer specifies it — over-caulking a wall actually traps moisture rather than keeping it out.
| Factor | Why It Affects Cost or Longevity |
|---|---|
| Home size and wall height | More square footage and multi-story access change labor and equipment needs |
| Existing siding removal | Tear-off, sheathing inspection, and any repair adds time before new siding goes on |
| Batten spacing and reveal design | Custom spacing or a mixed board-and-batten/lap design takes more layout planning than a standard pattern |
| Trim and flashing complexity | Gables, dormers, and multiple roof intersections require more detail work per linear foot |
| Site shading and moisture exposure | Heavily shaded, tree-covered elevations need extra attention to drainage detailing |
| Color selection | Factory ColorPlus finish is priced with the material; custom field-painted trim adds labor |
Common Mistakes We See (and Fix) on Board & Batten Homes
- Battens face-nailed too tightly, leaving no room for the panel to expand and contract
- No drainage gap behind the siding, trapping moisture against the sheathing
- Galvanized fasteners used where stainless or coated fasteners were called for, leading to rust streaking
- Missing or undersized kickout flashing where a roofline meets a wall
- Siding installed with less than the required clearance from grade, decks, or patios
- Battens caulked solid along both edges, sealing in moisture instead of letting it drain
- Moss and algae buildup concentrated at ground-contact courses from soil and hardscape splashback
Why We Only Install James Hardie
Board and batten is available in vinyl, engineered wood, and fiber cement, and each has real trade-offs. We're upfront about ours: James Hardie fiber cement costs more upfront than vinyl and is heavier to install, which means it takes a crew that knows how to handle it correctly. We think that trade-off is worth it for a Kendall-area home, for the reasons below.
| Material | Moisture Performance | Fire Resistance | Long-Term Maintenance |
|---|---|---|---|
| James Hardie fiber cement | Does not absorb water or swell; engineered for Pacific Northwest moisture | Non-combustible | Factory finish holds color for years; minimal repainting |
| Vinyl board and batten | Won't rot, but can warp or crack in temperature swings; joints can loosen over time | Combustible | Low maintenance but fades and becomes brittle with age |
| Wood or engineered wood | Absorbs moisture readily; prone to rot and moss growth in shaded, damp conditions | Combustible | Requires regular repainting and moisture monitoring |
Our Process From Estimate to Finished Siding
- On-site inspection of the existing wall, including a check for hidden moisture damage behind current siding
- Layout planning — panel reveal, batten spacing, and color selection to match the home's style
- Tear-off of old siding and inspection of sheathing, replacing any damaged material before moving forward
- Installation of weather-resistive barrier and drainage gap system
- Installation of HardiePanel and HardieTrim battens to manufacturer fastening and clearance specs
- Flashing, trim, and caulking applied exactly where specified — no more, no less
- Final walkthrough to confirm the job matches the plan and the spec
Why It Matters to Hire a Crew That Already Works in Kendall
A contractor who works Kendall regularly already knows which elevations of a rural, tree-covered lot are going to fight moss all winter, which walls take the worst of the driving rain, and how to size a drainage gap for a climate that doesn't dry out between storms the way inland Eastern Washington does. That local pattern recognition is the difference between a board and batten installation that still looks sharp in ten years and one that's fighting rot and streaking by year four. It also means Whatcom County permitting and inspection expectations are familiar territory rather than a guessing game.
What to Look for Before You Hire
- Manufacturer training or certification specific to fiber cement siding, not just general siding experience
- A clear explanation of how they'll handle drainage and flashing on your specific elevations
- Willingness to walk you through fastener type and spacing before work starts
- References or completed work in the Lynden and Kendall area, where the climate matches yours
- A written scope that names the exact Hardie products and finish being installed
If you're considering board and batten siding for a home in or around Kendall, we're happy to take a look, walk the property, and give you a straightforward, no-pressure estimate — no obligation, just an honest read on what your home needs. Use the form below to get started.