Estimate the number of sheets of plywood or OSB that are needed for sheathing a Hip roof.
The calculation is based on 4' x 8' sheets = 32 square feet each.

Calculation

1. enter the length of the building in feet and inches
2. the width in feet and inches
3. eaves overhang in inches
4. pitch of the roof rise in 12"
5. waste factor in a percentage preset @ 10%

The Results

1. area of roof square feet
2. number of sheets needed based on exact square footage of the roof
3. the number of sheets the waste percentage will add
4. number of sheets needed including the waste