Minimum Roof Pitch For 3 Tab Shingles

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.

Minimum roof pitch for 3 tab shingles.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. A roof slope of 2 12 up to but not including 4 12 is considered as low in residential construction. For those who don t understand the roof pitch number here is a way to envision it.

Therefore the asphalt manufactures base their warranties around the minimum recommended pitch of 4 in 12. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Normal roof slope for typical installation. This number corresponds to the number of inches of rise in a 12 foot run.

For low slopes as well as any other slope your local building department should be contacted. What slope is considered low slope for shingles. Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12. Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Pitch is the term used to describe the angle slope or slant of your roof. Asphalt shingles continue to be the most widely installed roof covering option in north america. Or the colon can replace the slash as in 2 12 or 7 12.

Experience the total owens corning roofing system and high quality roofing shingles. What precautions need to be taken to install shingles on low slopes. We can even help you find a professional to install it. Roof pitch defined and explained.

Roof pitch designations are comprised of two numbers indicating a ratio. 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. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.

Low sloped roof shingle installation. 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.