Minimum Roof Slope For Metal Shingles

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

Minimum roof slope for metal shingles.

Low slope metal roofs require less material which reduces the overall load on the building s structure. 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 shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Panels joined with an applied lap sealant can go as low as 12. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. Minimum pitch for metal roof.

Let us recap on the minimum roof pitch required for each type of roofing material. For low slope metal roofs under 12 that are nearly flat modified bitumen roofing thermoset and. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12.

Typically large footprint single story. Metal roof shingles require a minimum roof pitch of 3 12 or greater. Asphalt shingles require a minimum roof pitch of 2 12 or greater. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

Minimum metal roof slope depends on the roof profile building design climate and site location. 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. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Asphalt shingles continue to be the most widely installed roof covering option in north america.

There are some opinions that standing seam metal roof minimum slope is 12 but it increases the possibility of leaking on the few first days of snow arrival. The minimum roof slope for metal roofs is dependent upon the roof profile. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.