Lynden Siding Board & Batten Siding in Deming: Built for the Weather That Actually Shows Up
Deming sits in a part of Whatcom County where the weather doesn't do anything halfway. Homes here take on long stretches of driving rain, damp air that lingers under tree cover, and a moss season that seems to start earlier and end later every year. Board and batten siding is one of the most requested looks for homes in this area, but the look is only half the story. If the batten spacing, flashing, and material behind it aren't right for this climate, a board and batten wall can trap moisture and start failing years before it should. This page covers what a correctly built board and batten system looks like for a Deming home, and why we install it the way we do.
Why Board and Batten Fits This Area
Board and batten is a vertical siding pattern: wide flat panels or boards installed with narrow strips (battens) covering the seams between them. It reads as a farmhouse or craftsman style, and it's popular on both full exteriors and accent sections like gables, dormers, and entryways. In and around Deming, where lots often back up to trees, pasture, or open sky along the valley, the strong vertical lines read well against both wooded and open backdrops. It also pairs naturally with the kind of covered porches and simple rooflines common on homes in this part of the county.
The style question is easy. The harder question is what's underneath it, and that's where a lot of board and batten installations in wet climates go wrong.
What Deming's Climate Actually Does to a Board and Batten Wall
Driving Rain and Wind-Driven Moisture
Whatcom County storms don't just fall straight down. Wind pushes rain sideways against exterior walls, and vertical siding patterns like board and batten have more vertical seams than horizontal lap siding does. Every one of those seams is a potential entry point for water if it isn't flashed and sealed correctly. A wall that looks fine on a dry day can still be taking on moisture behind the battens during a hard blow, and that moisture doesn't always show itself until it's already done damage to the sheathing underneath.
Moss and Prolonged Dampness
The long stretch of overcast, damp weather common to this region gives moss and algae plenty of time to establish, especially on north-facing walls, shaded sides of the house, and anywhere siding stays wet longer because it doesn't get direct sun. Moss holds moisture against the siding surface far longer than a bare wall would dry on its own. On a material that swells, softens, or feeds mold when saturated repeatedly, that's a slow but steady problem.
Marine-Influenced Air
Whatcom County's weather is shaped by its proximity to the Sound and the broader Pacific marine layer, which means the air carries more moisture overall than a drier inland climate would. That marine influence, combined with valley fog and shaded terrain, adds up to siding that spends more days per year damp than dry in a lot of the county — Deming included.
What a Correct Board and Batten Installation Requires
None of the issues above are reasons to avoid board and batten. They're reasons to insist on the details being done right. A correct installation for this climate includes:
- A drainage plane (weather-resistant barrier) installed continuously behind the siding, not just tucked in around openings
- A rainscreen gap or furring strategy that lets any moisture that does get behind the siding actually drain and dry out instead of sitting against the wall
- Properly lapped and sealed flashing at every horizontal transition, window, door, and roofline intersection
- Batten spacing and fastening that accounts for material expansion and contraction through wet winters and drier summers
- Correct fastener type and placement so battens stay tight over time instead of working loose and opening gaps
- A factory finish or field-applied coating rated for real exposure, not just appearance
Skip any one of these and the siding can still look right for a season or two. The failures that show up in board and batten siding almost always trace back to one of these steps being rushed or skipped, not to the style itself being a bad fit for this climate.
Why We Only Install James Hardie for This Application
Board and batten is one of the styles where material choice matters more than usual, because of how much vertical seam is involved and how much of the wall surface is exposed edge grain compared to a lap pattern. We install James Hardie fiber cement board and batten systems exclusively — we don't offer this style in vinyl, LP SmartSide, primed spruce, cedar, or other fiber cement brands. That's a deliberate standard, not a lack of options.
Fiber cement doesn't absorb and swell the way wood-based products can when battens stay damp for extended periods, which matters directly for a moss-prone, high-moisture climate like this one. Hardie's HZ5 product line is engineered for the freeze-thaw and moisture cycling typical of the Pacific Northwest, and the ColorPlus factory finish is baked on and warranted against fading and peeling — a real advantage on a style where every batten edge is a place a field-applied coating could eventually fail first. Hardie also carries a strong transferable limited warranty, which matters to a lot of Deming homeowners who plan to sell within the warranty period.
We're not going to pretend other materials can't be installed as board and batten — they can, and plenty of installers do it. Our position is that we've seen how this climate treats board and batten siding over the years, and we'd rather stand behind one material we trust completely than offer several and hope the cheaper ones hold up.
Material Comparison for Board and Batten Applications
| Factor | James Hardie Fiber Cement | Wood-Based Products (LP, primed spruce, cedar) | Vinyl |
|---|---|---|---|
| Moisture/swelling risk at seams | Low — non-organic material | Higher, especially at cut battens and edges | Low, but seams can gap with temperature swings |
| Moss/algae resistance | Good with proper finish | Lower — organic surface can feed growth | Good, but can look dated faster |
| Finish durability | Factory-baked ColorPlus, long warranty | Field-applied paint, shorter repaint cycle | Color molded in, but limited style/profile options |
| Fire resistance | Non-combustible | Combustible | Combustible, can deform in heat |
| Typical lifespan when installed to spec | Decades with routine maintenance | Variable, moisture-dependent | Long, but seams and fading are common issues |
Our Installation Process for Deming Homes
- On-site assessment — we look at wall orientation, shade exposure, roof overhangs, and existing moss or moisture patterns specific to your property before recommending a spec.
- Tear-off and sheathing check — old siding comes off and we inspect the sheathing underneath for rot or existing moisture damage before anything new goes up.
- Weather-resistant barrier and drainage plane — installed continuously across the wall, with a rainscreen approach where the wall assembly calls for it.
- Flashing at every penetration — windows, doors, roof-to-wall intersections, and any other transition point.
- Board and batten installation — Hardie panels or boards installed plumb and level, followed by battens fastened per manufacturer spec for this region's exposure.
- Final inspection and cleanup — a walk-through with the homeowner before we consider the job finished.
Why Hiring a Crew That Already Works This Area Matters
A lot of siding problems in Whatcom County aren't caused by bad materials — they're caused by installers applying a generic spec that would work fine in a drier climate but isn't built for this one. A crew that regularly works in and around Deming and the greater Lynden area already knows which wall orientations on local homes get hit hardest by wind-driven rain, which sides tend to grow moss first, and how the valley's damp, shaded conditions differ from siding jobs closer to open, sunnier ground. That local pattern recognition shows up in small decisions — batten spacing, flashing detail, where extra care goes — that a spec sheet alone doesn't cover.
It also matters for the long term. A local company is still around for warranty questions, follow-up, and maintenance guidance years down the road, not just for the install itself.
Maintenance Checklist for Board and Batten in This Climate
- Rinse siding annually, focusing on shaded and north-facing walls where moss tends to establish first
- Keep gutters clean and downspouts directed away from the wall to reduce splash-back onto lower courses
- Trim back vegetation and tree limbs that keep sections of the wall shaded and damp longer than the rest of the house
- Inspect caulking and sealant at windows, doors, and trim annually and touch up as needed
- Watch for any soft spots, staining, or gaps at batten edges and address them promptly rather than waiting
What This Costs and What Drives the Range
Board and batten typically runs somewhat higher than standard lap siding, mainly due to the added labor of installing battens over base panels and the extra flashing detail at seams. The real cost drivers on a Deming project tend to be the same ones that drive cost anywhere in the region: how much of the old siding and sheathing needs to be removed and repaired, the home's wall height and complexity (dormers, gables, multiple roof intersections), and how much of the exterior is being done in board and batten versus paired with a different Hardie profile elsewhere on the house. We don't post fixed pricing because every home and every existing wall condition is different — we give a firm number after we've actually looked at the property.
If you're planning a board and batten project in Deming or elsewhere around Lynden, we're happy to take a look at your home and walk you through what a correctly built system would involve for your specific walls. There's no cost and no pressure for the estimate — just a straight assessment from a crew that knows this climate.