Minimum Roof Slope For 3 Tab Shingles

For those who don t understand the roof pitch number here is a way to envision it.

Minimum roof slope for 3 tab shingles.

But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. Therefore the asphalt manufactures base their warranties around the minimum recommended pitch of 4 in 12. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. Owens corning supreme 33 33 sq ft shasta white 3 tab roof shingles.

With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2 12. We do install shingles on these in between.

Roof pitch designations are comprised of two numbers indicating a ratio. Low sloped roof shingle installation. Item 12061 model sa12. Learn what the minimum slope for an asphalt shingle roof is the difference between sloped and flat roofs and how to calculate the slope of any roof.

Pitch is the term used to describe the angle slope or slant of your roof. 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. Asphalt shingles continue to be the most widely installed roof covering option in north america. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. This number corresponds to the number of inches of rise in a 12 foot run.

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. Minimum roof pitch for shingles. 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.