Board & batten · walls
How many board and batten do I need?
Type in your wall, pick a board and a batten, and the layout appears as you type: how many boards cross the wall, how the gaps land, what to buy and what it costs. No calculate button, no sign-up.
- Live 2D preview
- Even-gap layout
- Shopping list included
Your wall in four answers
Run the tape along the wall, corner to corner.
Floor to where the boards stop.
Widths are the face you can measure, not the tag number — a 1x8 shows 7-1/4 in.
The narrow strip that covers every gap. A 1x3 is the common pick.
The shadow line you want between boards. Leftover width gets spread evenly, so every gap stays the same.
Boards and battens both come in this length. Match it to the wall height and nothing gets cut.
Your wall, board by board
Every gap lands at 0.79 in and the 1x3 covers it with room to spare.
12 ft × 8 ft = 96 sq ft of wall; the boards and battens cover 115.3 sq ft of it — that is your paint number.
What you need
10% waste included- Boards across
- 18
- Battens
- 17
- Boards to buy
- 20
- Battens to buy
- 19
What will it cost?
Pop in the shelf prices. Boards and battens are priced per piece.
- 1x8 boards20 × $8.50 each
$170.00
- 1x3 battens19 × $3.50 each
$66.50
- Brad nails + adhesive1 box + 1 tube × your prices
$13.00
Project total
Fixings: $13.00 · $2.16 per sq ft covered
$249.50
Excludes paint, caulk and tools. Prices are estimates you can edit above.
How this calculator thinks
Three numbers decide everything else. Change any of them and the whole page redoes the maths instantly.
- 1
Boards across first
How many whole (board + gap) units fit from corner to corner, starting flush at the left edge. A 12 ft wall with 1x8 boards and 3/4 in gaps fits 18 boards with room to spare.
- 2
Then spread the leftover
Whatever width is left over gets divided evenly across every gap. On that 12 ft wall the 3/4 in gaps land at 0.79 in each — close enough that no eye will ever catch it, and every batten still covers its gap.
- 3
Then battens and waste
One batten per gap, plus two more if the wall ends are exposed. Boards and battens are counted as whole pieces and 10% is added on top — battens are also what turn the board offcuts into useful material.
Board and batten without the second trip
Small habits that save a 40-minute drive to the store.
- Nail the battens into the gap between boards where a stud lives — you are fastening two board edges and the batten in one shot.
- Snap one chalk line for the top of the boards and another for the bottom. Ten minutes of setup saves an afternoon of stepping back and squinting.
- Cut all your battens at once from the longest straight offcuts. Boards get the prime stock; battens hide the crooked pieces.
- Fill the batten nail holes before painting, not after. One coat of filler, one light sand, then paint everything at the same time.
- Keep the same reveal top and bottom. A batten that runs past the top of the boards looks like a mistake from across the room.
Questions people actually ask
The things we get emailed about most, answered without a single engineering term.
How many board and batten do I need for a 12 ft wall?
A 12 ft by 8 ft wall with 1x8 boards and 3/4 in gaps takes 18 boards and 17 battens — and with 10% extra for mistakes, you buy 20 boards and 19 battens. On an 8 ft wall every single piece is a full 8 ft board with nothing cut off, which is why this wall is the cheapest kind to build.
How far apart should board and batten be?
Whatever your batten can cover. The gap is the shadow line between boards, and the batten sits right over it, so a 1x3 batten (2-1/2 in real width) comfortably covers gaps from 1/2 in to a full inch. Whatever width is left over after fitting whole boards gets spread evenly across every gap — that is what keeps the rhythm looking even instead of one fat gap at the end of the wall.
What size boards should I use for board and batten?
The common pairing is 1x8 or 1x10 boards with 1x3 battens; 1x6 boards with 1x2 battens gives a tighter, more modern look. Use the dressed widths, not the tag numbers — a 1x8 is 7-1/4 in on a tape, a 1x3 is 2-1/2 in. Planning with nominal sizes is the fastest way to end up one board short.
Do I need a batten at each end of the wall?
Only if the end is exposed. Where the wall runs into a corner, the corner itself is the trim and a batten there would just look cluttered. Chimney breasts, half walls and hallway stub walls usually want the two end battens — there is a checkbox for it in the advanced options.
What if my wall is taller than 8 ft?
Then buy longer stock. A 10 ft wall built from 8 ft boards means every board needs a scarf joint — 24 pieces where 12 would do, twice the seams to fill and sand. The calculator counts the joints, and the stock length dropdown is where you fix it.
How much does a board and batten wall cost?
A 12 ft by 8 ft wall with 1x8 boards runs about $250 all-in at typical big-box prices: 20 boards at $8.50, 19 battens at $3.50, plus a box of brad nails and a tube of adhesive. Paint is extra. Type your own shelf prices into the cost panel and the total follows.
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