Minimum Roof Slope For Metal Roof

I e 4 inches of rise per 12 inches one foot of run.

Minimum roof slope for metal roof.

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 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. 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 units.

Minimum metal roof slope depends on the roof profile building design climate and site location. 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. 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 minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. Roof slopes are most commonly defined by the rise over run ratio. The minimum roof slope for metal roofs is dependent upon the roof profile.

The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. 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. Corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch.

Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. The minimum roof slope for metal roof panels depend on 3 different scenarios. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. 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. Typically large footprint single story.