Minimum Roof Pitch Standing Seam Metal Roof

In a few rare special occasions we might approve down to 1 5 12.

Minimum roof pitch standing seam metal roof.

Thanks for your questions. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. We require a 2 12 pitch for our standing seam products. The minimum roof slope for metal roof panels depend on 3 different scenarios.

However there are many mechanically seamed standing seams that are very appropriate for lower pitch roofs usually down to about 1 4 12 most flat seam products will have soldered seams to make them watertight even on a flat roof. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Typically large footprint single story. 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 pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. Standing seam manufactures allow applications of metal coverings on slopes of 12 or even more. You can often see such examples of use over metal decks. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12.

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. And profiles like standing seam which utilize a concealed connection to the roof deck require only a one and a half inch minimum pitch. For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. Low slope metal roofs require less material which reduces the overall load on the building s structure.

This means for every 12 horizontal units the roof must rise a minimum of 3 vertical. Metal roof panels minimum roof slope roof pitch r905 10 2. 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. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope.

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. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following. Also pitch is often expressed in a shorthand style using just the first number.