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Square feet
to add for roof pitch
If you know the pitch of a roof, you can use the numbers
in the following pitch table to do the following:
Determine how many square feet of roof area a building has by
measuring from the ground.
Determine how many square feet of roof area a building has by measuring
blueprints or plans.
| Roof
Pitch |
Amount
to add |
| 2/12 |
1.01 |
| 3/12 |
1.03 |
| 4/12 |
1.05 |
| 5/12 |
1.08 |
| 6/12 |
1.12 |
| 7/12 |
1.16 |
| 8/12 |
1.20 |
| 9/12 |
1.25 |
| 10/12 |
1.30 |
| 12/12 |
1.41 |
| 14/12 |
1.54 |
| 16/12 |
1.67 |
| 18/12 |
1.80 |
| 20/12 |
1.94 |
| 22/12 |
2.09 |
| 24/12 |
2.24 |
Example:
Roof is 6/12 pitch and measures at 2,400 square feet
2400 x 1.12 = 2,688
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