How Much Slope Does A Metal Roof Require In Arizona

A handy roof slope estimator can help you determine if your roof slope is likely too low for shingles.

How much slope does a metal roof require in arizona.

Roofs at the lower end of the range about 4 12 to 6 12 are relatively easy to walk and work on. Metal roof shingles minimum roof slope roof pitch r905 4 2. Sheet metal panels install quickly and easily and can be done without professional assistance especially on low slope roofs and come in a much wider range of colors than other nearly flat roofing options. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

Corrugated metal roofing has the same minimum pitch. Metal roof shingles can only be installed on roof slopes of 3 12 or greater 25 slope. Standing seam metal roofs with mechanical lock systems to ward off leaks can be successfully and attractively installed on roofs with at least a slope of 1 in 12. The majority of north american residential roofs have historically been constructed with a slope between about 4 12 and 9 12.

The minimum slope for lapped non soldered seam metal roofs with applied lap sealant shall be one half unit vertical in 12 units horizontal 4 percent slope. 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. Mineral surfaced roll roofing minimum roof slope roof pitch r905 5 2. Most metal roofs will have minimum pitches of three in twelve but this might sometimes go down depending on whether there are special installation procedures issued by the manufacturer regarding that particular roofing material.

To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.