Minimum Slope Corrugated Metal Roof

Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope.

Minimum slope corrugated metal roof.

Minimum pitch for corrugated metal roof just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12 4 slope. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 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.

It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units. Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems. Minimum metal roof slope depends on the roof profile building design climate and site location.

The corrugated metal roof minimum slope is 5 degrees. The minimum slope for lapped non soldered seam metal roofs with applied lap sealant shall be one half unit vertical in 12 units horizontal 4 percent slope. Low slope metal roofs require less material which reduces the overall load on the building s structure. 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.

In most occasions a pitch of three in twelve is preferred but this should also take into consideration the manufacturer s recommendations as well the unique condition of the corrugated metal roof. Corrugated metal roofing has the same minimum pitch.