How is board and batten siding installed differently than standard lap siding?

Board and batten runs vertically instead of overlapping horizontally, so it relies on furring strips, a drainage gap, and precise flashing behind the boards to manage water rather than shedding it course by course like lap siding. Getting that hidden layer right matters more with board and batten because a mistake isn't self-correcting the way overlapping lap courses can be.

What should I ask a contractor before they install board and batten siding on my home?

Ask specifically whether they install furring strips and a drainage gap behind the boards, how they flash windows and horizontal transitions, and whether they'll show you the water-resistive barrier before it's covered. A contractor who can't answer those questions in detail is likely planning to nail the boards flat against the wall, which is a common shortcut that leads to trapped moisture.

Why don't you install vinyl or engineered wood board and batten?

Vinyl expands and contracts more noticeably on wide, flat board and batten panels and doesn't handle impact well, while engineered and real wood depend entirely on an intact coating to keep water out. Once that coating fails at a cut edge or fastener, wood-based products are exposed to rot in a climate like ours, so we standardized on fiber cement instead.

What James Hardie board and batten products do you actually install?

We install Hardie's vertical siding panels and trim battens finished with ColorPlus, a factory-applied finish that's more consistent and durable than field-applied paint, in their HZ5 product line engineered for wetter climates. Color and profile options let us match a farmhouse or modern look without stepping outside the Hardie system.

How does the Bellingham/Whatcom County climate specifically affect board and batten siding?

The combination of driving rain and long, damp shoulder seasons means water is pushed into every seam and joint more aggressively than in drier climates, and shaded or north-facing walls are prone to moss and algae growth. That's why the flashing and drainage details behind the boards, plus periodic washing to keep moss from establishing, matter more here than in a lot of other parts of the country.

Lynden Board & Batten Siding — A Bellingham Local Crew

Board & Batten Siding Built for Whatcom County's Weather

Whatcom County runs from the salt air along Bellingham Bay inland toward Lynden's farm country, but the siding on every home in between deals with the same core problem: months of driving rain, short dry stretches to let anything dry out, and a moss season that seems to start earlier every year. Board and batten siding has a strong farmhouse and Dutch-influenced look that fits Lynden's rural character well, but that vertical board style also behaves differently than standard lap siding when it comes to shedding water. Getting it right here isn't optional — it's the difference between siding that looks good for decades and siding that's trapping moisture behind it within a few winters.

This page covers what board and batten siding actually is, what a correct installation requires in this climate, and why we install it exclusively in James Hardie fiber cement rather than vinyl, engineered wood, or real wood battens.

What Board & Batten Siding Really Is

Vertical Boards, Not Horizontal Lap

Board and batten is a vertical siding pattern: wide flat boards installed side by side, with narrower strips (the battens) covering the seams between them. It's the opposite orientation of the horizontal lap siding most people picture when they think of "siding," and it reads as a more textured, farmhouse-style exterior. Because the boards run vertically, water doesn't shed off each course the way it does with overlapping horizontal planks — it runs straight down the face of the wall, which is exactly why the assembly behind the boards matters more here than it does with lap siding.

Why Homeowners Choose It

Board and batten shows up a lot on farmhouse, craftsman, and modern-rustic exteriors, and it pairs naturally with the barns, outbuildings, and older farmhouses that give Lynden its character. It's also commonly used as an accent — gables, dormers, or a front entry section — mixed with horizontal lap siding elsewhere on the same house. Either way, the appeal is the same: strong vertical lines and a distinct look that horizontal siding can't replicate.

What a Correct Board & Batten Installation Requires

The Water-Management Layer Behind the Boards

Because vertical siding sends water straight down instead of shedding it course by course, the water-resistive barrier and flashing details underneath have to do more work. A correct installation includes a continuous weather-resistive barrier, properly lapped and taped seams, flashing at every window, door, and horizontal transition, and a drainage gap so any moisture that gets behind the boards has somewhere to go besides sitting against the sheathing. Skip any of that and the boards themselves become largely cosmetic — the real protection is what's underneath, and it's invisible once the job is finished.

Fastening and Furring

Board and batten should be installed over vertical furring strips or an equivalent drainage plane, not nailed flat against the wall. That gap lets water drain and air move behind the siding instead of pooling against it. Fastener placement and spacing also matter more than on lap siding, since each board is carrying its own wind and moisture load rather than overlapping the course below it. Rushed installs — especially the kind done to hit a low bid — tend to skip the furring and drainage gap entirely, which is one of the most common causes of premature rot behind vertical siding.

Why We Install Only James Hardie Board & Batten

We don't install vinyl board and batten, engineered wood, or real cedar boards. That's a deliberate standard, not a lack of options. Vinyl expands and contracts significantly with temperature swings, which is harder to hide on wide, flat board and batten panels than on smaller lap profiles, and it doesn't hold up well to physical impact. Engineered wood and real wood both depend on their factory or field-applied coating to keep water out — once that coating is compromised at a cut edge or fastener point, wood-based substrates absorb moisture and are vulnerable to rot, and Whatcom County's rain and moss season give that process every opportunity it needs.

James Hardie fiber cement is non-combustible, engineered specifically for wet, moss-prone climates through its HZ5 product line, and finished with the ColorPlus factory finish, which is baked on under controlled conditions rather than field-sprayed. It holds paint and color consistently, resists moisture-driven swelling, and comes with a strong, transferable manufacturer warranty. For a siding style where the water-management layer behind the boards is doing most of the real work, we want the boards themselves to be the one thing in the assembly we don't have to worry about.

Board & Batten Material Comparison

Material	Moisture/Rot Resistance	Fire Rating	Maintenance	Typical Lifespan
James Hardie Fiber Cement	High — cement-based, engineered for wet climates	Non-combustible	Low — factory finish, occasional wash	30+ years
Vinyl	Doesn't rot, but seams and gaps can trap moisture behind it	Combustible, can warp near heat	Low, but cracks/fades and can't be easily repaired in sections	15–25 years
Engineered Wood	Vulnerable at cut edges and coating failures	Combustible	Moderate to high — coating upkeep required	15–25 years with maintenance
Real Wood (Cedar)	Vulnerable without consistent refinishing	Combustible	High — regular staining/painting	Varies widely, often 15–20 years

Our Process for Lynden-Area Homes

We work this part of Whatcom County regularly, and the process stays consistent whether the job is a full re-side or a board and batten accent section:

Assessment — we look at the existing wall assembly, check for hidden moisture damage, and confirm what's behind the current siding before quoting anything.
Prep and tear-off — old siding comes off, sheathing is inspected and repaired as needed, and any rot or compromised framing is addressed before a single new board goes up.
Water-resistive barrier and flashing — the weather-resistive barrier is installed continuously, with proper flashing at every penetration and transition.
Furring and drainage gap — vertical furring is set to create the drainage plane the boards need behind them.
Board and batten installation — Hardie boards and battens go up per manufacturer fastening specs, with attention to spacing and joint placement.
Final inspection and cleanup — we walk the job, check caulking and trim details, and clear the site.

Cost Factors to Expect

Board and batten costs more to install correctly than it does to install fast, mainly because of the extra labor in furring strips, flashing, and precise fastening compared to lap siding. The biggest cost drivers on a Lynden-area project are typically the condition of the existing sheathing (rot repair adds cost but isn't optional), how much of the house is getting board and batten versus lap siding, wall height and roofline complexity, and how much trim and window flashing detail the house has. We give a straight, itemized estimate after seeing the house — we don't quote sight unseen, and we don't pad numbers to make a low bid look better on paper.

Living With Board & Batten in This Climate

Once it's installed correctly, James Hardie board and batten is low-maintenance, but "low-maintenance" doesn't mean "no attention needed" in a climate like this. Whatcom County's damp shoulder seasons feed moss and algae growth, especially on north-facing walls and anywhere tree cover blocks sun and airflow. Driving rain off the Pacific pushes water sideways into every joint and seam, which is exactly why the flashing and drainage details behind the boards matter as much as they do. A periodic gentle wash to keep moss from establishing, prompt attention to any caulking that's cracked or pulled away, and keeping gutters clear so water isn't sheeting down the wall face will keep board and batten performing the way it's supposed to for decades.

Check caulking at trim, window, and door edges once a year for cracking or gaps
Rinse moss and algae off north-facing or shaded walls before it takes hold
Keep gutters and downspouts clear so runoff isn't sheeting down the siding face
Watch for soft spots, bubbling paint, or dark staining — early signs of moisture behind the boards
Keep vegetation and sprinklers from holding constant moisture against the wall

Why a Crew That Already Works This Area Matters

Board and batten's water-management details aren't the kind of thing that shows up in a walk-around estimate — they're built in during installation and then hidden behind the finished wall. A crew that already works Whatcom County knows how local wall assemblies are typically built, what moisture problems tend to show up first in homes around Lynden, and how to detail flashing for the specific mix of driving rain and long damp seasons this area gets. That's the kind of judgment that only comes from doing this work repeatedly in this exact climate, not from a general contractor tackling their first vertical-siding job.

If you're considering board and batten siding for a Lynden-area home, we're happy to take a look and give you a straight, no-pressure estimate — fill out the form below and we'll get back to you.