Minimum Roof Pitch Standing Seam Metal Roof

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

Minimum roof pitch standing seam metal roof.

According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following. Typically large footprint single story. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more.

Minimum metal roof slope depends on the roof profile building design climate and site location. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. 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.

Low slope metal roofs require less material which reduces the overall load on the building s structure. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Pbr which is typically used for industrial metal buildings can be installed as low as half inch pitch for example.

We require a 2 12 pitch for our standing seam products. The minimum roof slope for metal roof panels depend on 3 different scenarios. Snap lock standing seams should not be used on roofs under 1 5 or 2 12. Also pitch is often expressed in a shorthand style using just the first number.

The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical.

And profiles like standing seam which utilize a concealed connection to the roof deck require only a one and a half inch minimum pitch. 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. Thanks for your questions. In a few rare special occasions we might approve down to 1 5 12.