Calculate the number of Slate tiles needed based on the square footage of the roof. Slate roofing tiles come in various sizes.

Calculation

1. enter the area of the roof in square feet
2. slate tile head lap in inches
3. tile length in inches
4. tile width in inches
5. waste percentage preset @ 12%

Results

1. exposure of the tile in square inches
2. number of tiles needed to cover one square
3. amount of tiles needed based on square footage
4. number of tiles added for waste
5. total number of tiles needed