Minimum Pitch For Standing Seam Copper Roof

Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12.

Minimum pitch for standing seam copper 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. Standing seam roofing is composed of preformed or field formed pans usually between 14 to 18 inches wide when finished. Minimum 3 degree pitch required for roofing. Complete list of roofing types.

Many modern building designs now incorporate the double lock standing seam system. These pans run parallel to the slope of the roof and are joined to adjacent pans with double locked standing seams. Roof slope equivalents as rise. The double lock standing seam is a traditional system that has been used historically throughout europe and america for many years.

We recommend 5 degrees however due to site conditions and execution. The recommended dimensions should be specified from the table below. Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. Seams can also be mitred into cladding pans for a seamless design.

There are some opinions that standing seam metal roof minimum slope is 12 but it increases the possibility of leaking on the few first days of snow arrival. They are based on either standing or batten seam roofing. Degrees to pitch rise in run table. A 5 degree roof pitch.

Mansard roofs are usually steep but they often have changes in their slope. Standing seam roof systems must have a minimum roof slope of 1 4 12. The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater.

In retrofit projects a sub framing system is attached to the existing flat roof surface to provide a minimum 12 roof pitch. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12. Table 8 1c outlines the recommendations regarding flat seam construction.

The minimum recommendations are therefore the same as the base standing or batten seam roof. Run in degrees and as percentage the minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.