How Much Pitch Does A Metal Roof Need

Next find the square footage of the metal roofing panels you want to use.

How much pitch does a metal roof need.

Most roof s have a pitch in the 4 12 to 9 12 range. So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.

Use our roof pitch calculator to find the pitch of your roof. Multiply the footprint square footage by the multiplier for your roof pitch to find the actual square footage of the roof. 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 minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

Measure the length and width in feet then multiply together to find the square footage. The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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. The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run.