Minimum Roof Pitch Shin Metal

Asphalt shingles continue to be the most widely installed roof covering option in north america.

Minimum roof pitch shin metal.

For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12.

This means for every 12 horizontal units the roof must rise a minimum of 3 vertical. In a few rare special occasions we might approve down to 1 5 12. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. After that the miimum pitch for metal panels depending on the methods used to join the panels.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Minimum pitch for metal roof. The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.

The minimum roof slope for metal roof panels depend on 3 different scenarios. Metal roof panels minimum roof slope roof pitch r905 10 2. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. The minimum roof slope for metal roofs is dependent upon the roof profile.

Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. Panels joined with an applied lap sealant can go as low as 12. There are some opinions that standing seam metal roof minimum slope is 12 but it increases the possibility of leaking on the few first days of snow arrival. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope.

For low slope metal roofs under 12 that are nearly flat modified bitumen roofing thermoset and. The minimum pitch for metal roofing varies depending on the profile of the metal. We require a 2 12 pitch for our standing seam products. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.