Minimum Roof Pitch For 3 Tab Shingles

Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch.

Minimum roof pitch for 3 tab 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. This number corresponds to the number of inches of rise in a 12 foot run. Asphalt shingles continue to be the most widely installed roof covering option in north america. Roof pitch designations are comprised of two numbers indicating a ratio.

Experience the total owens corning roofing system and high quality roofing shingles. Low sloped roof shingle installation. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. 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.

There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. 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. 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. What precautions need to be taken to install shingles on low slopes. Roof pitch defined and explained. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt 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. 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 those who don t understand the roof pitch number here is a way to envision it. We do install shingles on these in between.

What slope is considered low slope for 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.