How is board and batten siding different to install compared to standard lap siding?

Board and batten relies on vertical battens and seams instead of overlapping horizontal boards, which changes how flashing, fastening, and drainage need to be handled. There are more vertical joints exposed to wind-driven rain, so the underlying rainscreen and flashing details matter even more than they do on a lap profile. Installers who default to lap-siding habits on a board and batten job often miss these differences.

What should I ask a contractor before hiring them for board and batten siding on Orcas Island?

Ask whether they've worked on the island before and how they plan material deliveries around the ferry schedule, since that affects both cost and timeline. Ask specifically what rainscreen and flashing approach they use, since that's where most premature failures start. It's also worth asking what siding material they install and why, and whether they can speak to how it performs in a wet, shaded, salt-exposed climate specifically.

Why don't you install vinyl or LP SmartSide board and batten?

We standardized on James Hardie fiber cement because it's non-combustible, dimensionally stable, and specifically engineered for wet marine climates like this one. Vinyl and LP SmartSide both have legitimate uses, but each carries a trade-off — vinyl's dimensional instability and combustibility, or LP's reliance on an intact factory coating over a wood-based core — that we'd rather not build a standard around in this climate.

What James Hardie board and batten products do you install, and are they pre-finished?

We install Hardie's vertical board and batten siding in the HZ5 formulation, which is engineered for the moisture and freeze-thaw conditions typical of the Pacific Northwest. Most projects use Hardie's factory-applied ColorPlus finish, which is baked on under controlled conditions and holds color and moisture resistance better over time than a field-applied paint job.

How does Orcas Island's ferry schedule affect siding project timelines in Obstruction Pass?

Materials and equipment generally need to arrive by ferry, so we build delivery timing into the project schedule from the start rather than treating it as an afterthought. Weather windows also matter more here, since a delayed ferry sailing during a storm can push a delivery back a day or more. Planning around both factors up front is what keeps an island project on schedule.

Board & Batten Siding for Obstruction Pass Homes

Board & Batten Siding in the Obstruction Pass Area

Board and batten siding has a long history on Orcas Island, and it's easy to see why. The vertical lines suit wooded lots, waterfront-facing homes, and the mix of cabins and custom builds you find throughout the Obstruction Pass area. But the look is only half the story. Out here, siding also has to hold up against salt air drifting in off the water, driving rain that comes sideways during winter storms, and a moss season that can stretch for months in the shaded, damp conditions common to San Juan County. A board and batten installation that isn't built for this specific environment will show problems within a few years — even if it looked great on install day.

This page covers what board and batten siding needs to do in Obstruction Pass specifically, what a correct installation actually involves, and why we install it in exactly one material: James Hardie fiber cement.

What Obstruction Pass's Climate Does to Vertical Siding

Salt Air and Corrosion

Homes near the water on Orcas Island are exposed to airborne salt that settles on every exterior surface, including siding, fasteners, and trim. Over time, salt exposure accelerates corrosion in lower-grade fasteners and metal flashing, and it can degrade certain paint finishes and substrates faster than the manufacturer's stated service life would suggest. Board and batten siding has more vertical seams and more exposed batten edges than a standard lap profile, which means more places for salt-laden moisture to find a foothold if the details aren't handled correctly.

Wind-Driven Rain and Seams

Driving rain is a regular feature of Pacific Northwest weather, and board and batten's vertical joints are more exposed to wind-driven water than horizontal lap siding. Every batten seam is a potential entry point unless it's backed by proper flashing and a drainage plane. Get this wrong and water works its way behind the siding, where it can sit against sheathing and framing for weeks between dry spells.

Moss and Shade

Much of Orcas Island sits under heavy tree cover, and shaded, north-facing walls stay damp far longer after a storm than open, sun-exposed walls. That extended moisture window is exactly what moss and algae need to establish. On porous or absorbent siding materials, moss growth isn't just cosmetic — it holds moisture against the surface and can accelerate underlying decay if left unaddressed.

Why We Only Install Board & Batten in James Hardie Fiber Cement

We don't install vinyl board and batten, LP SmartSide, primed spruce, cedar, or other fiber cement brands like Cemplank or Allura. That's a deliberate standard, not a lack of options. Each of those materials has real strengths, but each also carries a trade-off that shows up specifically in a climate like this one:

Cedar looks beautiful and is a traditional choice for this region, but it's an organic material that requires ongoing sealing, staining, and vigilance against moisture, insects, and the moss growth this climate encourages.
Vinyl is low-maintenance and inexpensive, but it's a combustible plastic that can warp or become brittle over time, and vertical vinyl board and batten profiles are prone to visible waviness as the material expands and contracts.
LP SmartSide and primed spruce are engineered or solid wood products with wood fiber at their core. They perform well when maintained closely, but any breach in the factory coating exposes wood fiber to the kind of sustained dampness that's common on shaded, salt-exposed walls here.

James Hardie fiber cement is non-combustible, dimensionally stable, and engineered specifically for wet marine climates through its HZ5 product line, which is built for exactly the freeze-thaw, moisture, and moss-prone conditions found across the Pacific Northwest. The factory-applied ColorPlus finish is baked on under controlled conditions, which gives it more consistent, long-term resistance to fading and moisture intrusion than field-applied paint or stain. That's the standard we hold every board and batten project to, and it's backed by a strong transferable warranty on both the substrate and the finish.

What a Correct Board & Batten Installation Involves

Rainscreen and Drainage

A furring strip or engineered rainscreen product behind the siding creates an air gap and drainage path so that any water that does get past the battens can drain and dry out instead of sitting against the wall assembly. In a climate with this much sustained rainfall, skipping this step is one of the most common causes of premature siding failure.

Fastening and Batten Spacing

Battens need to be fastened into solid framing or blocking with corrosion-resistant fasteners rated for the exposure, not just whatever is fastest to run. Spacing has to account for the panel widths beneath and for consistent shadow lines, and fasteners need to be set to manufacturer specification depth — overdriven fasteners crack the board and create a moisture entry point right where you least want one.

Flashing and Trim Details

Every window, door, and roof-to-wall transition needs proper flashing integrated with the water-resistive barrier before the battens ever go up. This is the detail work that separates a durable install from one that looks fine for a season and then starts showing staining and soft spots at the corners and openings.

Caulking and Joints

Joints should be caulked with a high-quality, paintable sealant rated for exterior use, and never as a substitute for proper flashing — caulk is a backup layer, not the primary defense against wind-driven rain.

Comparing Board & Batten Material Options for This Climate

Material	Moisture & Rot Resistance	Salt Air Performance	Moss Season Maintenance	Typical Warranty
James Hardie Fiber Cement	Excellent — non-combustible, engineered for wet climates	Strong; factory finish resists salt-driven fading	Low; hard surface resists moss adhesion better than wood	Long-term, transferable
Cedar	Good if sealed and maintained closely	Moderate; finish needs frequent renewal	High; organic surface is prone to moss and algae	Typically none from manufacturer
Vinyl	Good against rot, poor dimensional stability	Can become brittle with prolonged UV and salt exposure	Moderate; can trap moisture behind panels	Varies widely by product line
LP SmartSide / Primed Spruce	Fair; wood-based core vulnerable if coating fails	Moderate; coating integrity is critical	Moderate to high depending on exposure	Prorated, coating-dependent

The right choice depends on the specific wall, exposure, and how much ongoing maintenance a homeowner wants to take on. For most Obstruction Pass properties, especially those with shaded or water-facing walls, fiber cement's combination of stability and low maintenance is what holds up best over time.

Our Process for Obstruction Pass Projects

Working on Orcas Island means planning around ferry schedules and weather windows, and we build that into how we run every job in this area. Our process typically looks like this:

An on-site walkthrough to assess existing siding condition, wall exposure, and any moisture or moss damage already present.
A written scope and estimate that specifies the Hardie product line, batten spacing, and flashing approach for your specific walls.
Material staging planned around ferry logistics so the crew isn't waiting on deliveries mid-project.
Removal of old siding with an inspection of the sheathing underneath before anything new goes up.
Installation of the water-resistive barrier, rainscreen, flashing, and board and batten system to manufacturer specification.
A final walkthrough with the homeowner before we consider the job complete.

Maintaining Board & Batten Siding Through a Long Moss Season

Even a correctly installed, moss-resistant material benefits from a bit of homeowner attention in this climate. A short annual checklist goes a long way:

Rinse shaded, north-facing walls in early fall before the wettest months set in.
Trim back vegetation and tree limbs that keep walls in constant shade and slow drying time.
Check caulked joints around windows and battens annually for cracking or separation.
Clear debris from the base of walls and any drainage points so water isn't held against the bottom course.
Address any soft spots, staining, or visible moss buildup early rather than waiting for the next dry season.

Why Local Experience on Orcas Island Matters

Board and batten siding installed by a crew unfamiliar with island logistics and this specific climate often runs into avoidable problems — wrong fastener choices for salt exposure, missed flashing details that only show up after a real winter storm, or project delays because materials weren't staged around the ferry schedule. A crew that already works in the Obstruction Pass area understands the practical realities of building here: how to plan around weather windows, what wall assemblies actually need in a marine climate, and how to get a project done without the surprises that come from treating Orcas Island like anywhere else in San Juan County.

If you're considering board and batten siding for a home in the Obstruction Pass area, we're happy to walk the property, look at your specific exposure, and put together a free, no-pressure estimate using the form below.