Metal Roof On Low Pitch Roof

I have found the proper roof but the underlayment options and guidance has been scattered.

Metal roof on low pitch roof.

The corrugated metal roof minimum slope is 5 degrees. Before you decide on going with a metal roof. At sheffield metals we also recognize low slope as 3 12 and below. In addition cool metal roofing can significantly reduce a building s long term energy use.

The flatter the roof the more likely that a metal roof will leak at the seams. Minimum metal roof slope depends on the roof profile building design climate and site location. My roof at lowest is 75 12. Minimum pitch for corrugated metal roof corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch.

A typical low slope metal roof has at least 25 recycled content and at the end of its long useful life is 100 recyclable. Low slope metal roofs require less material which reduces the overall load on the building s structure. A metal roof mechanically seamed crimped and butyl injected at the seams designed to handle low slopes as low as 5 12. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12.

The other side is 2 12. The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. A low slope roof is defined in the industry as a roof that has a pitch equal to 3 12 or less. Sunday august 5 2018 the traditional metal roof types such as 5v crimp shown above and corrugated are rated by the manufacturers for use down to a 3 12 pitch three inches of vertical rise for every foot of horizontal run.

Determining which panel is the right choice for the slope on your project will depend on the manufacturer s minimum slope factor for that specific panel profile. Typically a low slope metal roofing system weighs between 40 to 135 pounds per 100 square feet making them one of the lightest and easiest roofing materials to install. That s a definite possibility if the roof has a very shallow pitch. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs.

A low sloped roof requires less roofing material which reduces the weight load placed on the structure.