Minimum Slope For Standing Seam Metal Roof

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.

Minimum slope for standing seam metal roof.

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Standing seam roof systems must have a minimum roof slope of 1 4 12. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. For 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. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

You can often see such examples of use over metal decks. Speaking about standing seam metal roof slope it is a general and a self evident knowledge that the steeper it is the faster it is for snow rain or drain to come down the roof. 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.

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