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Underlayment Board Coverage Calculator

Estimate underlayment or cement-board sheets, covered area, and fastener count for floor and wall substrates.

Inputs

Area

Range: 0–100,000 ft2

Range: 0–100,000 ft2

Sheet and allowance

Range: 1–12 ft

Range: 1–12 ft

Range: 0–30

Range: 1–100

Common field values are 8 to 16 per sheet depending on the fastener schedule.

Result

Area to board
132.0
Screws needed
108.00 screws
Coverage per sheet
15.0
Sheets of board
9.00 sheets

How this was calculated

Sheets of board
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Planning estimate only. Verify the entered measurements, product data sheet, site conditions, and applicable local requirements before ordering or installing. This calculator does not establish product suitability or code compliance.