Minimum Slope Metal Building Roof

Corrugated metal roofing has the same minimum pitch.

Minimum slope metal building roof.

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. 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. Profiles with a higher ridge at the panel connections can be installed lower.

This means for every 12 horizontal units the roof must rise a minimum of 3 vertical. Minimum metal roof slope depends on the roof profile building design climate and site location. With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

For the most part the minimum pitch for metal roof installations depends on what kind of material you are installing and the method in which the material is being fastened. The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. A typical low slope metal roof has at least 25 recycled content and at the end of its long useful life is 100 recyclable. Typically large footprint single story.

The minimum roof slope for metal roof panels depend on 3 different scenarios. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope. According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following.

Metal roof panels minimum roof slope roof pitch r905 10 2. 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. Low slope metal roofs require less material which reduces the overall load on the building s structure. 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.

Asphalt shingles continue to be the most widely installed roof covering option in north america. The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.