Construction Calculator - Walls and Finishes

Board and Batten Calculator

Estimate boards, battens, or panels from wall area.

Reviewed: August 26, 2026

Calculate Board and Batten

For the Board and Batten Calculator, enter project area, coverage per unit, waste allowance, and unit price. It divides project area by the entered usable coverage, applies the allowance once, and rounds up to whole packages with an optional package cost.

Construction measuring tools arranged beside a residential building project

Formula used

Units = ceil([project area ÷ coverage per unit] × [1 + waste ÷ 100])

Board and Batten Calculator measurement plan showing Project area square feet, Coverage per unit square feet / unit, Waste allowance percent

Worked board and batten example

Board and Batten Calculator example: 432 ft² × 1.1 = 475.2 ft² of order coverage. Dividing by 100 ft² per unit gives 4.75 units, so the purchase quantity is 5 whole units.

Turn area into a material list

Round field boards or panels to full pieces, then count battens, corners, starter, and trim from elevation drawings.

Area is not a board-and-batten layout

The package calculation works only when coverage per unit already reflects the chosen siding system. It does not derive coverage from board face width, batten width, overlap, or spacing. Develop the elevation layout first—including gables, corners, openings, starter details, and balanced end boards—then enter the usable coverage of the product or bundle being priced.

Layout details outside the area formula

Board width, batten spacing, overlap, gables, openings, corner trim, stock lengths, and balanced layout affect material use.

Questions specific to this calculation

Can this coverage calculator lay out individual boards and battens?

Enter wall coverage and the usable square-foot coverage of the board package or panel system; battens and trim often require a separate linear layout.