Roof Sheet Calculator
Roof Sheet Calculator
Lay out roofing sheets with overlaps and count purchase sheets.
Roofing sheets overlap, so their listed width is not the width each sheet adds to the roof.
Measure along the slope and enter the sheet profile's usable dimensions and overlaps. The order count should reflect actual cover, not just the nominal sheet area.
How to use Roof Sheet Calculator
- Choose measurement unit. Enter slope length, plane width and identical roof planes.
- Enter sheet length, sheet width, end overlap, side overlap and ordering allowance.
- Enter price per sheet.
- Select Calculate estimate. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.
Why choose this tool?
Separating nominal size from effective cover helps you compare profiles without accidentally counting overlap as useful coverage.
Before you use the result
Enter measured slope length, not the horizontal footprint. Effective cover depends on your sheet profile.
Questions about Roof Sheet Calculator
Should I enter the horizontal roof length?
Use the measured slope length for the covered direction. A horizontal footprint can be shorter than the surface the sheets must cover.
What should I check before using Roof Sheet Calculator?
Check Measurement unit, Slope length, Plane width and Identical roof planes. Use the exact units shown beside the controls and replace any example values with your own inputs.
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