Minimum Pitch For Standing Seam Copper Roof

Minimum 3 degree pitch required for roofing.

Minimum pitch for standing seam copper roof.

A 3 degree roof pitch means just over 50mm in every metre so over 3 metres you only have 150mm to play with. The double lock standing seam is a traditional system that has been used historically throughout europe and america for many years. Standing seam roof systems must have a minimum roof slope of 1 4 12. Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered.

Roof pitch multiplier table. Many modern building designs now incorporate the double lock standing seam system. Table 8 1c outlines the recommendations regarding flat seam construction. In country with heavy snow and tough winter days the metal roof minimum slope is recommended to be 1 12.

These pans run parallel to the slope of the roof and are joined to adjacent pans with double locked standing seams. 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. The minimum recommendations are therefore the same as the base standing or batten seam roof. Degrees to pitch rise in run table.

Roof slope equivalents as rise. The recommended dimensions should be specified from the table below. Standing seam roofing is composed of preformed or field formed pans usually between 14 to 18 inches wide when finished. Complete list of roofing types.

A standing seam design assures adequate draining from rain and snow effectively eliminating ponding leaks and related problems typically associated with built up roofs. Lapped nonsoldered seam metal roofs with applied lap sealant must have a minimum roof slope of 1 2 12. 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. Thermoset and thermoplastic single ply roofing requires a minimum roof pitch of 1 4 12 or greater.

Seams can also be mitred into cladding pans for a seamless design. Mansard roofs are usually steep but they often have changes in their slope. Modified bitumen roofing requires a minimum roof pitch of 1 4 12 or greater. 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.

The minimum slope for standing seam of roof systems shall be one quarter unit vertical in 12 units horizontal 2 percent slope. We recommend 5 degrees however due to site conditions and execution.