Metal Roof Below 1 2 Slope

A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

Metal roof below 1 2 slope.

Their fasteners are either concealed or screwed at the top of a ridge which makes them less likely to leak. But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch. Now i am told that reroofing with shingles is counterindicated because of the low slope. Instead i am advised to go to epdm over iso board.

Low pitched roofs aren t able to shed water and snow as easily. I don t know of any that will warrantee a 1 5 12 slope but they may exist. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. The most common slopes are.

But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch. That means the roofing material you choose needs to protect the materials underneath to prevent water damage and leaks. Here s the citation from the 2017 residential edition of the florida building code for minimum slope of metal roof panels and the internation residential code irc is similar. 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.

Most roof s have a pitch in the 4 12 to 9 12 range. The table below shows common roof pitches and the equivalent grade degrees and radians for each. When i ve done metal roofing on slopes that low it s been soldered copper. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs.

The contemporary house with cathedral ceilings has a 1 5 12 pitch. A 2 12 roof slope is considered low so the roofing materials you would use on a steeper roof may not work. 3 12 1 2 12 and 1 4 12. The house has had a shingle roof since it was build in 1955.