Minimum Pitch Angle For Metal Roof

According to the 2012 international building code 1507 4 2 deck slope minimum slopes for roof panels need to comply with the following.

Minimum pitch angle for metal roof.

The minimum roof slope for metal roofs is dependent upon the roof profile. For low slope metal roofs under 12 that are nearly flat modified bitumen roofing thermoset and. The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of. This means for every 12 horizontal units the roof must rise a minimum of 3 vertical.

After that the miimum pitch for metal panels depending on the methods used to join the panels. The minimum pitch for metal roofing varies depending on the profile of the metal. 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. The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run.

For a 1 12 pitch roof the only metal product i recommend is a mechanically seamed standing seam. Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels. Amongst many decisions one has to make when designing a metal building determining metal roof minimum slope is one of them. So if your roof rises 4 inches for every 12 inches of horizontal length then the pitch of your roof is expressed as 4 12.

In a few rare special occasions we might approve down to 1 5 12. It determines how many inches the roof should rise for every 12 inches expanding on the horizontal side. Roof pitch is the measurement of roof steepness. A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible.

The way pitch also known as roof slope is measured is rise over run. Minimum pitch for metal roof. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. Lapped nonsoldered seam metal roofs without applied lap sealant must have a minimum roof slope of 3 12 25 slope.

The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. We require a 2 12 pitch for our standing seam products. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. Minimum roof pitch for metal building.

Roof pitch is the degree of building s roof slope. Panels joined with an applied lap sealant can go as low as 12.