Minimum Slope Metal Building Roof

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12.

Minimum slope metal building roof.

With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Typically large footprint single story. The minimum slope for lapped non soldered seam metal roofs without applied lap sealant shall be three units vertical in 12 units horizontal 25 percent slope.

This means for every 12 horizontal units the roof must rise a minimum of 3 vertical. Asphalt shingles continue to be the most widely installed roof covering option in north america. Minimum metal roof slope depends on the roof profile building design climate and site location. Metal roof panels minimum roof slope roof pitch r905 10 2.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Also pitch is often expressed in a shorthand style using just the first number. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Not only can low slope metal roofing contribute to the bottom line it can also contribute to leed credits which are awarded to buildings that use high recycled content and other green construction materials. The minimum roof slope for metal roof panels depend on 3 different scenarios. But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof.

A typical low slope metal roof has at least 25 recycled content and at the end of its long useful life is 100 recyclable. The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following.

Profiles with a higher ridge at the panel connections can be installed lower. Low slope metal roofs require less material which reduces the overall load on the building s structure. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope.