The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
Minimum roof pitch colorado.
What is the minimum pitch slope of an asphalt shingle roof.
Shingles of all types need to have a slope to function properly.
4 responses to 28 minimum roof pitch with metal roofing.
The minimum requirement is 2 12.
So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
We require a 2 12 pitch for our standing seam products.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
March 27 2018 at 10 49 am.
You could also opt for a pvc flat roofing membrane.
Rafters are built or framed on an angle to achieve the designed pitch of a roof.
Would you as a manufacturer of this flat metal roofing material condone a 1 12 slope for this roof.
In some areas of the u s.
For example areas hit by extraordinary lake effect snows like buffalo new york and montreal canada specify a 6 12 a rather steep pitch of approximately 26 6 degrees.
Thanks walt in colorado.
There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12.
The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.