Minimum Pitch Corrugated Plastic Roof

The corrugated metal roof minimum slope is 5 degrees.

Minimum pitch corrugated plastic roof.

It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. 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. 4 attach rafters to header and crossbeam with 1 screws and nails. Allow a 1 minimum pitch per foot for adequate drainage.

Installing translucent plastic corrugated roof panels. However you can only use this pitch with built up roofing or specialized synthetic roofing. Corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch. Courtesy the kemlite company.

Corrugated roofing is a great material on traditional pitched roofs but it has severe limitations when the pitch gets below 5 degrees. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. That is why all roofing manufacturers recommend the 5 degree pitch as the minimum slope and they will not provide any guarantees if it is installed flatter than this. Just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof.