Roof
How much to add for roof pitch
Roof Pitch, how much to add
This roof pitch table displays a multiplier for adding for different roof pitches. How to find your what roof pitch category.
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.
This Roof Pitch Chart will give you your multiplier.
Or just enter your numbers into this Roof Pitch Degrees.
Roof Pitch | Roof Pitch Multiplier | Roof Pitch Degrees |
2/12 | 1.01 | 9.46° |
3/12 | 1.03 | 14.04° |
4/12 | 1.05 | 18.43° |
5/12 | 1.08 | 22.62° |
6/12 | 1.12 | 26.57° |
7/12 | 1.16 | 30.26° |
8/12 | 1.20 | 33.69° |
9/12 | 1.25 | 36.87° |
10/12 | 1.30 | 39.81° |
Example:
Roof is 6/12 pitch and measures at 2,400 square feet
So 2400 x 1.12 = 2,688 , 2.88 sqs added for pitch.
Get your roof size by using this Roof Pitch Calculator.
Roof Pitch | Roof Pitch Multiplier | Roof Pitch Degrees |
12/12 | 1.41 | 45° |
14/12 | 1.54 | 49.4° |
16/12 | 1.67 | 53.13° |
18/12 | 1.80 | 56.31° |
20/12 | 1.94 | 59.04° |
22/12 | 2.09 | 61.39° |
24/12 | 2.24 | 63.43° |
Enter your numbers into this go to Roof Pitch Calculator