LYSAGHT TRIMDEK® is a subtle square-fluted steel cladding, available in long lengths, so on most jobs you can have one sheet from ridge to gutter without end laps. It is made of high strength steel and despite its lightness, provides excellent spanning capacity and remarkable recovery after deformation. The strength, spanning ability, lightness and rigidity of LYSAGHT TRIMDEK® permits wide support spacings to be used with safety.