Maximum Roof Pitch For Shingles

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

Maximum roof pitch for shingles.

So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work. 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. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above.

This means for every 12 horizontal units the roof must. Asphalt shingles continue to be the most widely installed roof covering option in north america. 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.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. This number corresponds to the number of inches of rise in a 12 foot run.

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. 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.