How Much Pitch Should A Metal Roof Have

Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels.

How much pitch should a metal roof have. Just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof. When looking at metal roofing panel you will need to. 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. I have a six square 2 12 pitch patio roof installed by a previous owner who used 3 tab shingles.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run. 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. If you are only trying to keep a wood pile dry or storing a few outdoor tools and light machinery out of the weather then you might consider a simple single pitch roof since most everything inside will be stored at ground level and pulled out from the outside of the shed.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Much depends on what your intended use for the shed actually is. Since most building codes require a pitch of at least one quarter inch per 12 inches you should anticipate that the angle of your roof will be at least 4 degrees. The most common slopes are.

Most roof s have a pitch in the 4 12 to 9 12 range. 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. A roof that slopes 12 inches for every 12 inches would have a 45 degree angle. My insurance company says it can t insure that roof because it should have flat roofing material and refer me to icc irc 2006.

So if your roof rises 4 inches for every 12 inches of horizontal length then the pitch of your roof is expressed as 4 12. 3 12 1 2 12 and 1 4 12. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. 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.

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible. The minimum pitch for metal roofing varies depending on the profile of the metal.