Minimum Slope For Aluminum Flat Roof

Low slope metal roofs require less material which reduces the overall load on the building s structure.

Minimum slope for aluminum flat roof. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. The minimum pitch for a. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12.

The minimum roof slope for metal roof panels depend on 3 different scenarios. 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. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. Determine the minimum slope of the roof based on the roofing material.

For the most part the minimum pitch for metal roof installations depends on what kind of material you are installing and the method in which the material is being fastened. Asphalt shingles continue to be the most widely installed roof covering option in north america. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following. Corrugated metal roofing has the same minimum pitch.

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. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. Typically large footprint single story. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. The minimum roof slope for metal roofs is dependent upon the roof profile. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units. Minimum metal roof slope depends on the roof profile building design climate and site location.

The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. Minimum pitch for metal roof. This is the basis for calculating the angle which is approximately a 1 19 degree slope.