A specialty classification that involves installation, maintenance, repair, and alteration of roofing, sheet metal and siding. The scope of work for roofing includes waterproofing and coating to protect, repair, waterproof, stop leaks, or extend the life of a roof as well as required roof-deck attachments and any repair or replacement of wood roof sheathing or fascia as needed during roof repair or replacement. The scope of work for sheet metal includes fabrication, erection, installation, alteration, or repair of cornices, flashings, gutters, leaders, rainwater down spouts, pans, etc. The scope of work for siding includes fabrication and installation of aluminum, vinyl or other material for siding, facia, soffit, gutter, etc.