Steel Shingle Roof Minimum Slope

Asphalt shingles continue to be the most widely installed roof covering option in north america.

Steel shingle roof minimum slope.

Typically low slope metal roof systems vary in weight from 40 to 135 pounds per 100 square feet making them among the lightest roofing products and the easiest to install. The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of three in twelve or 3 12 3 inches vertically per 12 inches horizontally. Suitable materials for pitched roofs. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. The minimum roof slope for metal roofs is dependent upon the roof profile. A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Minimum metal roof slope depends on the roof profile building design climate and site location. A minimum pitch of 3 in 12 or even 4 in 12 will normally be required. The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. Metal roof shingles minimum roof slope roof pitch r905 4 2.

Keep in mind that neither metal shingles not corrugated metal panels are suitable options for low slope or nearly flat roofs. The minimum slope for lapped non soldered seam metal roofs without applied lap sealant shall be three units vertical in 12 units horizontal 25 percent slope. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following. Typically large footprint single story.

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Minimum pitch for metal roof. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units. Pitched roofs begin with with slopes greater than 3 in 12.

Low slope metal roofs require less material which reduces the overall load on the building s structure. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.