Minimum Roof Pitch For 3 Tab Shingles

For low slopes as well as any other slope your local building department should be contacted.

Minimum roof pitch for 3 tab shingles.

There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. We do install shingles on these in between. What precautions need to be taken to install shingles on low slopes. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. 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. Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch. This number corresponds to the number of inches of rise in a 12 foot run.

Roof pitch defined and explained. We can even help you find a professional to install it. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. 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. Normal roof slope for typical installation. Or the colon can replace the slash as in 2 12 or 7 12. 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. For those who don t understand the roof pitch number here is a way to envision it. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles. A roof slope of 2 12 up to but not including 4 12 is considered as low in residential construction.

Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. 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. Pitch is the term used to describe the angle slope or slant of your roof. Experience the total owens corning roofing system and high quality roofing shingles.

What slope is considered low slope for shingles. Low sloped roof shingle installation.