Metal Roof Slope

Metal roof slope is expressed by a ratio indicating the roof pitch which notes the vertical rise of the roof in inches for every 12 inches the roof runs horizontally in other words dividing the vertical rise and its horizontal span.

Metal roof slope.

To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. If roofing material is installed on a roof with a slope that is less than what is specified by the manufacturer it will void the warranty. 3 12 1 2 12 and 1 4 12. We ship our top quality long warranty metal roofing materials directly to your job site and often for free.

Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels. Frank resso pe president resso engineering newnan ga agrees saying that generally low slope metal roofs tend to be used on buildings that are larger in overall area with long runs from eave to ridge to reduce the total height of the roof and to minimize the structural requirements of the supporting framing. The minimum roof slope for metal roofs is dependent upon the roof profile. This is particularly important to pay attention to when using metal roofing products such as standing seam metal which have a multitude of profiles attachment methods and seam lap joint styles which can affect the recommended slope.

This recommendation con flicts with some manufacturers who list 1. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12. Low slope metal roofs provide years of low cost low maintenance performance.

The most common slopes are. 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. A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. The nrca roofing and waterproofing manual fifth edition states the mini mum slope for structural metal panel roof systems should be 1 2 in 12 2 4 degrees.

Low slope metal roofs have been a preferred roof covering for commercial institutional and industrial buildings for years because of their ability to protect against the elements to allow water to drain away from the roof surface and to keep building contents and occupants dry and comfortable. For a project that goes smoothly with decades of solid protection overhead the best choice you ll make is to buy your diy roofing panels shingles and metal siding from absolute steel s metal roofing source.