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.
Minimum slope for corrugated plastic roof.
The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.
Just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof.
However you can only use this pitch with built up roofing or specialized synthetic roofing.
The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.
The corrugated metal roof minimum slope is 5 degrees.
It is the recommended slope as there is no guarantee if you opt for flatter pitch than this.
The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.
Minimum pitch for corrugated metal roof.
If you have a metal roof on your house there is a good chance that it is made of corrugated iron roofing.
The most common disregard for engineering logic is the rule of minimum pitch for corrugated iron roofing.
Installing translucent plastic corrugated roof panels.
Allow a 1 minimum pitch per foot for adequate drainage.
Courtesy the kemlite company.
4 attach rafters to header and crossbeam with 1 screws and nails.