Minimum Pitch Angle Shingle Roof

This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units.

Minimum pitch angle shingle roof.

The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials. Roof pitch multiplier table. However you can only use this pitch with built up roofing or specialized synthetic roofing.

The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. What is the minimum pitch slope of an asphalt shingle roof. Pitch is the term used to describe the angle slope or slant of your roof. Roof pitch designations are comprised of two numbers indicating a ratio.

Complete list of roofing types. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The minimum requirement is 2 12. Asphalt shingles can only be installed on roof slopes of 2 12 or greater.

Roof slope equivalents as rise. That works out to about nine degrees if that works better for you. Asphalt shingles continue to be the most widely installed roof covering option in north america. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow.

Degrees to pitch rise in run table. Pitch angle incline slope they all can be used to refer to the steepness of a roof. Asphalt shingles minimum roof slope roof pitch r905 2 2. In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally.

Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the. Run in degrees and as percentage the minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Or the colon can replace the slash as in 2 12 or 7 12. It is important for shingle roofs to function properly and one method of ensuring that this is achieved is to observe the pitch requirements for the shingles.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.