Minimum Slope For Standing Seam Metal Roof

Standing seam roof systems must have a minimum roof slope of 1 4 12.

Minimum slope for standing seam metal roof.

For metal roof systems. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following. 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. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. 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.

Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. Mbma recommends a minimum slope of 1 2 in 12 2 4 degrees for through fastener metal roof systems and 1 4 in 12 1 2 de grees for standing seam metal roof systems. You can often see such examples of use over metal decks.

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