Minimum Pitch Angle Shingle Roof

Complete list of roofing types.

Minimum pitch angle shingle roof.

The minimum requirement is 2 12. Pitch angle incline slope they all can be used to refer to the steepness of a roof. Roof pitch designations are comprised of two numbers indicating a ratio. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.

Roof pitch defined and explained. Roof pitch multiplier table. That works out to about nine degrees if that works better for you. Asphalt shingles minimum roof slope roof pitch r905 2 2.

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. Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the. Asphalt shingles continue to be the most widely installed roof covering option in north america. What is the minimum pitch slope of an asphalt shingle roof.

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. 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. 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.

Roof slope equivalents as rise. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. Degrees to pitch rise in run table. Shingles of all types need to have a slope to function properly.

Asphalt shingles can only be installed on roof slopes of 2 12 or greater. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. However you can only use this pitch with built up roofing or specialized synthetic roofing. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. 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.