Minimum Slope For Standing Seam Metal Roof

The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

Minimum slope for standing seam metal roof.

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. You can often see such examples of use over metal decks. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. Mbma classi fies metal roof systems into two types through fastener metal roof systems and standing seam metal roof systems. 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. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following.

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. Standing seam roof systems must have a minimum roof slope of 1 4 12. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12.

In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12.