Standing Seam Fixings

Clips for tray roofing are normally single clips, fastened to the substrate with screws or annular grooved nails. The sole of the screw should have a rebated or countersunk hole for the fastener, and rounded edges, to ensure thermal movement of the sheet does not cause damage by rubbing against sharp edges.

Revision Category: 
4 - Clause Inserted
Revision Detail: 

New clause, inserted as part of a comprehensive revision of Standing Seam Cladding.