Maximum Roof Pitch For Shingles

Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work.

Maximum roof pitch for shingles.

There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. This number corresponds to the number of inches of rise in a 12 foot run. Clay and concrete tile minimum roof slope roof pitch r905 3 2.

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. 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. 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. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. 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.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. What is the minimum slope for an asphalt shingle roof.