The most common slopes are.
Sloped metal roofing.
Because low slope roofs drain water more slowly than moderate or steep sloped roofs systems such as slate or asphalt shingles that rely on mechanical drainage for successful performance are not used.
Low slope metal roofs require less material which reduces the overall load on the building s structure.
It is the recommended slope as there is no guarantee if you opt for flatter pitch than this.
Minimum metal roof slope depends on the roof profile building design climate and site location.
Low slope metal roofs provide years of low cost low maintenance performance.
3 12 1 2 12 and 1 4 12.
Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs.
That s why your best bet will be to use some variation of a mechanically seamed metal roof system specifically a double lock profile.
Final thoughts on low slope metal roofing the bottom line is that you want to install a standing seam metal roof profile that will provide the most protection for your low slope project.
Corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch.
Low slope roofs present special challenges in terms of preventing unique types of damage.
Low slope metal roofs have been a preferred roof covering for commercial institutional and industrial buildings for years because of their ability to protect against the elements to allow water to drain away from the roof surface and to keep building contents and occupants dry and comfortable.