Products / TR 7

TR 7 is an exposed-fastener steel roofing profile with 1/2 inch ribs at 6.39 inch centres and intermediate grooves, formed from 36 inch coil to a 32 inch covering width, with a 24 inch minimum length. It is offered in 26, 28 and 30 gauge steel, plus a 25 gauge (AL) option, in natural and prepainted finishes. Duchesne lists it for residential and agricultural projects. Duchesne's roof load-table notes state the steel conforms to ASTM A653/A653M or A792/A792M.