Maximum Roof Pitch For Shingles

Clay and concrete tile minimum roof slope roof pitch r905 3 2.

Maximum roof pitch for shingles.

Also if asphalt shingles are installed on a roof slope of 2 12 to 4 12 it shall be provided with a double underlayment application. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Asphalt shingles continue to be the most widely installed roof covering option in north america. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

This means for every 12 horizontal units the roof must. Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.

It is important for shingle roofs to function properly and one method of ensuring that this is achieved is to observe the pitch requirements for the shingles. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. Low sloped roof shingle installation if 4 12 and above is normal and 2 12 is minimum what about properties with roofs in between the two such as a 3 12 pitched roof. What is the minimum slope for an asphalt shingle roof.

Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.