Minimum Pitch For Corrugated Roof

That is a 14 degree angle.

Minimum pitch for corrugated roof.

Most residential metal roofs require at least a 3 12 roof pitch and have no maximum roof pitch. The cladding should be supported at maximum centres as specified by the manufacturer and fixings should be a minimum of 50mm from sheet ends. 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 pitch for corrugated metal roof just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof.

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch. Corrugated metal roofing has the same minimum pitch. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.

That means there is at least 3 of vertical rise to the roof slope for every 12 it goes back horizontally. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. The corrugated metal roof minimum slope is 5 degrees. However you can only use this pitch with built up roofing or specialized synthetic roofing.

The lysaght website states that they can be but this is not consistent with section 3 5 1 3 of the ncc which states that corrugated profile roofing must have a minimum pitch of 5 degrees as you ve indicated above.