Standing Seam Metal Roof Slope Minimum

You can often see such examples of use over metal decks.

Standing seam metal roof slope minimum.

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 following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Standing seam roof systems must have a minimum roof slope of 1 4 12. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more.

Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12. 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 a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam.

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. A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas. For metal roof systems. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

Typically low slope metal roof systems vary in weight from 40 to 135 pounds per 100 square feet making them among the lightest roofing products and the easiest to install. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Mbma classi fies metal roof systems into two types through fastener metal roof systems and standing seam metal roof systems. We require a 2 12 pitch for our standing seam products.

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