Minimum Fall For Corrugated Iron Roof

Minimum pitch for corrugated metal roof.

Minimum fall for corrugated iron roof.

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. 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. Also pitch is often expressed in a shorthand style using just the first number. Just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof.

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Pbr which is typically used for industrial metal buildings can be installed as low as half inch pitch for example. Corrugated roofing is a great material on traditional pitched roofs but it has severe limitations when the pitch gets below 5 degrees. Corrugated metal roofing has the same minimum pitch.

The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.