Is board and batten siding just a style choice, or does it actually perform differently than horizontal lap siding?

It's both. The vertical boards and battens give a distinct look, but they also change how water moves down the wall — long vertical seams instead of overlapping horizontal courses. That means the drainage plane and flashing behind the siding matter even more than they do with standard lap siding.

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

Ask specifically whether they're installing a rainscreen or drainage gap behind the siding, what flashing they use at windows and horizontal trim bands, and whether they follow the manufacturer's fastening specs rather than a generic pattern. Also ask how many board and batten jobs they've done in your specific neighborhood, since hillside lots have their own access and moisture considerations.

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

Both are legitimate products, but we standardized on James Hardie fiber cement because it doesn't absorb and hold moisture the way wood-based products can, which matters in a climate with this much sustained damp weather and shade. It also means a shorter repainting cycle isn't hanging over the homeowner a few years down the road.

What's the difference between using James Hardie panel siding versus individual boards for a board and batten look?

Panel siding uses large vertical sheets with battens over the seams, which is faster to install and gives very clean, consistent lines. Using individual boards with battens over them gives a slightly different shadow line and texture. Both are built on the same Hardie fiber cement base and HZ5 climate engineering — the choice comes down to the look you want.

Does South Hill's tree cover and elevation change how board and batten should be installed compared to lower, more open parts of Bellingham?

Yes — shaded, north-facing walls under mature trees stay damp longer, so those sections need the drainage and flashing details done correctly even more than a wall in full sun. Elevation and any bay exposure also mean more airborne salt reaching the siding and fasteners, which is part of why corrosion-resistant fastening matters on hillside homes specifically.

South Hill Board & Batten Siding, Built for Bellingham Weather

Board & Batten on South Hill: A Style That Has to Earn Its Keep

South Hill is one of Bellingham's older hillside neighborhoods — tree-canopied streets, a mix of early-1900s homes and newer infill, and enough elevation in places to catch real views out over Bellingham Bay. Board and batten siding shows up a lot here, and for good reason: the vertical lines suit the neighborhood's older, craftsman-influenced architecture, and they read well against the steep rooflines and porches common on the hill. But board and batten isn't just a look you bolt onto a house. It's a siding system with its own water-management rules, and on a hillside neighborhood exposed to Bellingham Bay weather, getting those rules wrong shows up fast — as streaking, soft trim, or moss creeping up from the bottom courses.

This page is about what board and batten siding needs to actually perform on a South Hill home, not just look good on installation day.

What Bellingham's Climate Does to Vertical Siding

Whatcom County sits in a wet, marine climate, and South Hill's position above the bay means homes there get a specific combination of exposures that vertical siding has to be detailed for:

Salt Air Off the Bay

Homes with any bay exposure take on airborne salt, which accelerates corrosion on exposed fasteners and metal flashing. On board and batten siding, the battens themselves are typically face-nailed or blind-nailed at regular intervals — meaning there are more fastener penetrations per square foot than with standard lap siding. Every one of those fasteners needs to be corrosion-resistant, or they become the weak point in the system years before the siding itself would fail.

Driving Rain

Storms coming off the Salish Sea don't just fall straight down — wind-driven rain hits walls at an angle, and vertical board and batten has long, uninterrupted seams running from top to bottom of the wall. Those seams (the joints between boards, and the battens themselves) are the paths water will find if the assembly behind the siding isn't built to shed it. Horizontal lap siding relies on overlap alone to shed water; board and batten relies more heavily on a correctly built drainage plane behind the boards.

Long Moss Season

Between the tree cover common on South Hill's older lots and the region's extended wet season — roughly fall through spring — north-facing and shaded wall sections stay damp for long stretches. Moss and algae take hold on any surface that can't dry out, and once established, they hold moisture against the substrate underneath. Board and batten's vertical battens create horizontal ledges at every joint and trim transition, which are exactly the spots where windblown debris and moisture collect if they aren't detailed to shed rather than trap.

What a Correct Board & Batten Installation Actually Involves

The visual result of board and batten is simple — wide flat panels or boards with narrower battens covering the seams. What's behind that surface is where the job is won or lost.

A drainage plane, not just a weather barrier. A weather-resistant barrier (housewrap or building paper) goes on first, but on vertical siding we also want a rainscreen gap — a small air space between the barrier and the siding — so any water that does get behind the boards can drain and the wall can dry from both sides.
Correct flashing at every horizontal transition. Window and door heads, water tables, belly bands, and any spot where a roof meets a wall need flashing that directs water out and away, not just caulk. Caulk fails; flashing is a physical barrier and doesn't depend on maintenance to keep working.
A fastening pattern engineered for the product, not improvised. Batten spacing, nail size, nail placement, and penetration depth all come from the manufacturer's installation specs. Deviating from them is one of the most common ways board and batten jobs fail early, and it's invisible from the ground once the job is done.
Properly detailed corners and terminations. Outside corners, inside corners, and the bottom starter course all need specific trim details so water sheds away from the wall assembly instead of running behind it.

James Hardie Board & Batten: The System We Install

We install James Hardie fiber cement exclusively, and board and batten is one of the applications where the difference in engineering really matters. Depending on the look a homeowner wants, we build board and batten using James Hardie vertical panel siding paired with HardieTrim boards as battens, or individual Hardie boards set with trim battens over them — both built on the same fiber cement base, engineered for the Pacific Northwest through Hardie's HZ5 product line.

Why That Matters Here

Fiber cement doesn't absorb water the way wood-based products do, which matters directly for South Hill's moss and driving-rain exposure — a damp, shaded wall section on fiber cement isn't feeding moisture into the substrate the way it would with an absorbent material. The factory-applied ColorPlus finish is baked on and covers cut edges when installed and sealed correctly, which matters on a salt-air site where an exposed, unsealed edge is a place coastal moisture can get a foothold. And because it's non-combustible, it's simply a safer material to have on the exterior of a home, hillside or not.

Board & Batten Material Comparison

Factor	James Hardie Fiber Cement	Cedar	Engineered Wood (LP-type)
Moisture absorption	Very low	Moderate to high, swells/shrinks	Low if edges sealed and maintained
Moss/algae resistance	Good; doesn't feed growth	Prone to moss and rot in shaded, damp areas	Resistant if coating stays intact
Repainting cycle	ColorPlus finish typically holds well beyond standard paint cycles	Every 3–5 years in this climate	Every 5–7 years typically
Fire resistance	Non-combustible	Combustible	Combustible
Fastener sensitivity	Low once installed to spec	Moderate; wood movement stresses fasteners	Moderate; edge integrity depends on sealed coating

We don't install cedar or engineered wood board and batten — not because either product is without merit, but because we standardized on fiber cement for the maintenance burden and moisture behavior it avoids in exactly this kind of climate.

Our Process for a South Hill Board & Batten Job

On-site assessment. We look at the wall orientation, tree cover, existing moisture or moss patterns, and any current siding or trim damage before quoting anything.
Removal and substrate check. Old siding comes off and we inspect the sheathing underneath for rot or soft spots — hillside homes with mature landscaping often have shaded wall sections where this is more likely.
Weather barrier and drainage plane. Housewrap goes on, followed by a rainscreen gap system so the wall can drain and dry.
Flashing at every penetration and transition. Windows, doors, and horizontal trim bands are flashed before any siding goes up.
Panel or board installation, then battens. Fastened to Hardie's specified pattern, with attention to consistent batten spacing for a clean vertical line.
Trim, corners, and caulking at seams only where specified — not as a substitute for proper flashing.
Final inspection for fastener placement, gaps, and finish quality before we call the job done.

Maintaining Board & Batten Through Bellingham's Wet Season

Fiber cement cuts down on maintenance significantly compared to wood, but no exterior siding on a shaded, bay-adjacent hillside lot is entirely hands-off. A short annual routine keeps a board and batten job looking right for the long haul:

Rinse siding (especially north-facing and tree-shaded walls) once a year to clear early moss or algae growth before it establishes
Keep gutters and downspouts clear so runoff isn't sheeting down wall sections
Trim back vegetation that keeps a wall section shaded and damp longer than the rest of the house
Check caulking at trim and penetration points annually — it's a maintenance item, not a permanent seal
Look at the bottom starter course and any ground-level trim yearly, since splash-back is the most common spot for moisture issues to start

Why a Crew That Already Works South Hill Matters

South Hill's mix of older homes, steep driveways, mature trees, and hillside lots creates real logistical and technical variables that a crew unfamiliar with the neighborhood has to learn on your job. Knowing which wall orientations on the hill tend to hold moisture longest, how to stage equipment and material on a sloped or narrow lot, and what Bellingham's permitting process requires for exterior work all come from having done this work locally, repeatedly — not from a generic install checklist. On an older home, it also means knowing what's likely hiding behind the existing siding before the first board comes off, so there are no surprise change orders mid-project.

Get a Straightforward Estimate

If you're weighing board and batten siding for a South Hill home, we're happy to take a look, walk you through what your specific walls and exposure need, and give you a straightforward, no-pressure estimate. There's a form below — reach out and we'll get you a time that works.