Board and Batten Siding Calculator
Find how many boards, battens and furring strips board-and-batten siding needs for a wall.
Change the values and press Calculate to work out your own figures.
Enter the wall's size, the board width and the gap.
Show the working
- boards = ⌈(wall + gap) ÷ (board + gap)⌉
- battens = boards − 1
How to use it
Enter the wall's size, the board width and the gap.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
boards = ⌈(wall width + gap) ÷ (board + gap)⌉; battens = boards − 1 furring rows = height ÷ 2 ft + 1
Questions
How many boards for a 20 ft wall?
21 boards of 11 1/4 in with 1/2 in gaps.
Formulas
boards = ⌈(wall width + gap) ÷ (board + gap)⌉; battens = boards − 1 furring rows = height ÷ 2 ft + 1
Sources
Limitations
- Material densities are typical values (the midpoint of the commonly published range); real loads vary with moisture, grading and compaction, so check with your supplier or type in their density.
- Tank results are the geometric volume; real tanks have wall thickness and fittings.