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Types

There are two types of fully supported cladding:

  • Traditional architectural annealed metal panels limited to 1.8 m in length.
  • Long length strip roof cladding up to 10 m in length.

Both traditional architectural and long length strip-roof-cladding types share the same seaming methods and also many of the same flashing and fixing details. The cover requirements may differ from profiled metal cladding because whereas profiled laps are overlapped, fully supported cladding laps are seamed.

When annealed grades of metal are used in short lengths, the folds can have a generous radius, because the details are hand worked and do not possess the straight lines associated with machine folded or roll formed cladding.

The use of both types of fully supported metal roof cladding without structural ribs gives rise to undulations in the wide flat pan, which are not only to be expected but an architectural feature of fully supported cladding.

A perfectly flat metal surface cannot be obtained when using wide flat panels, and designers should be aware that fully supported roof or wall cladding will reflect light unevenly, particularly when it is new, and it will not change by increasing the thickness of the cladding.

If designer or customer expectations include flat panels without distortion, then narrow pan secret fix profiled and ribbed metal roof cladding should be considered. If wide flat panels for walls or facades without ribs are required, the COP advises using bonded panels.

Most metals used for this type of cladding are non-ferrous and naturally weathering, and acquire a patina over time that enhances the appearance and the durability of cladding.

Zinc and copper can be supplied in a pre-weathered or pre-patinated finish, and this can avoid the discolouration caused during installation and the uneven colouration of individual panels in sheltered areas.

The loadings, installation, performance, maintenance, corrosion, drainage, and site practice sections of this COP are all applicable to fully supported cladding and should be read in conjunction with this section, which contains only specific detailing and reference to fully supported cladding.

Clause: 
015_004_002_001_000_000_000_000_000
Clause Number: 
15.4.2.1
/cop/other-products/standing-seam-cladding#types
Revision Category: 
0 - Clause Removed
Revision Detail: 

Clause removed during a comprehensive revision of Standing Seam Cladding.

Draft Clause: 
014_004_002_001_000_000_000_000_000