Minimum Roof Slope For Metal Roof

The minimum roof slope for metal roof panels depend on 3 different scenarios.

Minimum roof slope for metal roof.

Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels. Corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch. Minimum metal roof slope depends on the roof profile building design climate and site location. I e 4 inches of rise per 12 inches one foot of run.

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. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical units. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

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. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. Low slope metal roofs require less material which reduces the overall load on the building s structure. If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss the roof slope is said to be 4 12.

Typically large footprint single story. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this.

The minimum roof slope for metal roofs is dependent upon the roof profile. 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. The corrugated metal roof minimum slope is 5 degrees. Roof slopes are most commonly defined by the rise over run ratio.

The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels.