Minimum Metal Roof Pitch

With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels.

Minimum metal roof pitch.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Roof pitch is the degree of building s roof slope. Minimum pitch for metal roof. Corrugated metal roofing has the same minimum pitch.

Minimum metal roof slope depends on the roof profile building design climate and site location. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. After that the miimum pitch for metal panels depending on the methods used to join the panels. The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of three in twelve or 3 12 3 inches vertically per 12 inches horizontally.

Panels joined with an applied lap sealant can go as low as 12. For low slope metal roofs under 12 that are nearly flat modified bitumen roofing thermoset and. Minimum roof pitch for metal building. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.

The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Typically large footprint single story.

According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following. Amongst many decisions one has to make when designing a metal building determining metal roof minimum slope is one of them. 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. Low slope metal roofs require less material which reduces the overall load on the building s structure.