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 link Roof Pitch Calculator

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One Comment

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