Minimum Roof Pitch For 3 Tab Shingles

Normal roof slope for typical installation.

Minimum roof pitch for 3 tab shingles.

With respect to shingle application roof slopes from 2 12 to less than 4 12 18 5 are called low slope roofs while roof slopes of 4 12 or greater are called normal or standard slopes. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work. Therefore the asphalt manufactures base their warranties around the minimum recommended pitch of 4 in 12. A roof slope of 2 12 up to but not including 4 12 is considered as low in residential construction.

Experience the total owens corning roofing system and high quality roofing shingles. I have heard of special methods being used for 3 tab asphalt shingle and low roof pitches less than 4 pitch that includes adhering the shingles and changing the reveal so that in the roofer would be nailing through 3 layers of shingles prevents wind lift off. 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. We do install shingles on these in between.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. Roof pitch defined and explained. Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12.

Or the colon can replace the slash as in 2 12 or 7 12. Let owens corning help you determine when it is time for a new roof and then let us help you choose the shingles for your roof that are right for you. For low slopes as well as any other slope your local building department should be contacted. We can even help you find a professional to install it.

What precautions need to be taken to install shingles on low slopes. Low sloped roof shingle installation. Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch. For those who don t understand the roof pitch number here is a way to envision it.

What slope is considered low slope for shingles. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Pitch is the term used to describe the angle slope or slant of your roof.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.