Required Pitch For Aluminum Pan Roofing

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.

Required pitch for aluminum pan roofing. The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels. In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. Just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof.

Secondary roof drains are to be positioned on the roof so that water will drains to the primary upslope and they should not be installed at the same elevation as the primary. Roof slope of 1 4 per foot minimum is required on all roof systems. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. Anything above that will require you to put out higher cost because they are already considered as higher pitch.

Slope should be built into the structure on new buildings.