Board and Batten Siding Calculator

Board and batten is really two materials working together — wide vertical boards with narrow battens covering the seams. That means two counts, not one. The board count comes from your wall area and board width; the batten count comes from how many vertical joints you have, which depends on board width and wall height. This calculator handles the area for the boards and flags the batten linear footage you'll need on top.

Whether you're doing it in real wood, engineered LP, fiber-cement panel or a vinyl board-and-batten profile, the area math is the same — only coverage and price change.

On a 10 ft tall wall with boards on roughly 12-inch centers, each board run needs a batten. A 30 ft wide wall has about 30 seams × 10 ft = 300 linear feet of batten in addition to the boards. Plan both when you order.

Two kinds of numbers feed this tool. The geometry — areas, openings, squares, waste — is fixed arithmetic and as accurate as your tape. The material coverage and the cost estimates are planning values based on common manufacturer specifications and reported US installed pricing; they vary with product line, region and labor, which is why they appear as ranges. Treat the result as a solid starting point for budgeting and ordering, subject to a field measure and your contractor's quote.

You've got a number — now protect it. These are the checks that keep a board and batten siding order from coming up short or over-buying.

• Confirm coverage: the default coverage is a planning figure. Check the exact coverage printed on your product's box or spec sheet and adjust it if it differs, since even a small change moves the piece count on a big wall.
• Match the waste to your walls: keep 10% for a simple rectangular house, and raise it toward 15% for gables, dormers, bay windows and lots of angled cuts, because those details generate short offcuts you can't reuse.
• Account for accessories: starter strip, trim, inside and outside corners, flashing and fasteners are all part of a complete order, not an afterthought — the takeoff above estimates each so your material list is whole.
• Keep a spare: hold back a piece or a full box for future repairs, since profiles and colors get discontinued over time and an exact match years later is hard to find.
• Time your order: have material delivered close to the start date, stored flat and dry, so it isn't sitting exposed or getting damaged before the crew arrives.

Re-run the numbers above after any change and lean on the per-wall audit to verify each surface one at a time, so what you order matches what the wall actually needs rather than a rough guess. That small habit is the difference between one clean delivery and a mid-project trip back to the supplier.