Low Pitched Standing Seam Metal Roof

Sig zinc and copper recommend that the minimum pitch for a standing seam zinc roof is five degrees with an absolute minimum of 3 degrees.

Low pitched standing seam metal roof.

With low slope you want to consider the roof load. What is the minimum pitch for a zinc roof. We recommend 5 degrees however due to site conditions and execution. Low slope structural roofing generally used on roof pitches ranging from 12 to 3 12 consists of interlocking panels commonly called standing seam roofing that run vertically along the roof surface.

These panels generally come with a painted mill finish or a clear acrylic finish. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. The panels have been designed for application over a wide variety of substrates on roof slopes as low as 1 2 12 pitch. By the way pitch is measured by picking any point on the roof place a level on it measure 12 out from that point this is called the run and then down to the roof surface from the bottom of the level this is called the rise to see how many inches the roof pitches over 12.

These roofs are made from panels of aluminum or steel joined together in raised seams. But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch. The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. They are also used on much steeper roofs.

They can be used on roofs with pitches as low as 25 12. Minimum metal roof slope depends on the roof profile building design climate and site location. As you can see from illustration the roof changes pitch at the porch from a 9 12 to a 3 12 pitch. 2 5 12 to 19 12 pitches.

A 3 degree roof pitch means just over 50mm in every metre so over 3 metres you only have 150mm to play with. Anything above that will require you to put out higher cost because they are already considered as higher pitch. The standard of lower pitch actually ranges between 1 12 to 5 12. Their fasteners are either concealed or screwed at the top of a ridge which makes them less likely to leak.

Low slope meta l roof is one of the lightest among other roofing. Repeating cases of standing water in five to ten years can result in rust. Low slope metal roofs require less material which reduces the overall load on the building s structure.