Roof Edge Low Slope Roof

A low slope roof is one that has a slope of less than 3 in 12.

Roof edge low slope roof.

This rules out steel and aluminum roofing. Regular asphalt shingles and standard skylights will work at pitches of 4 12 or greater but at lower pitches you have to use different materials. Metal roofs have turned out to be problematic in our area. The most recent of these documents the ansi spri ed1 design standard for edge systems used with low slope roofing systems which became ansi approved june 3 rd 2019 a designer is presented with tables a6 and a7 which provide nailer attachment fastener loads for buildings above and below 60 in height.

Attach drip edge along the edge of the roof with roofing cement. A roof that is nearly flat or slightly pitched is called a flat roof or low slope roof no roof should be dead flat because it must have at least a slight slope to drain. Extend the front edge of the drip edge so it runs off the roof and into the guttering. While a low slope metal roof could in principle be properly built in the situations we encounter that seems to be the exception.

By low slope roofing we mean any roof that is pitched at less than 4 inches of rise in 12 inches of run or 4 12 pitch. Based on the field of roof pressure psf kpa in a simple to use format the designer is provided corresponding data for fastener spacing and the perimeter fastener load.