Each roof panel is held in place by a series of stainless steel clips which are fastened to the z-purlins with long screws. The standing seam on the roof panels is then crimped around the clips, and around the adjoining panel, holding them in place and providing a watertight seal. The clips are designed to avoid providing a thermal break, or interruption in the insulation. Two kinds of sealants – a butyl tape and a polyurethane caulk – provide a moisture barrier between the panels.
Our roof panels have a 4” layer of isocyanurate insulation (which gives them an insulating value of R-33) sandwiched between two thin layers of steel. The inside face is painted white, and is intended to be exposed, but in tin box it will be hidden behind the galvanized B-deck, which will provide the shiny, silver finish for our ceilings. On the upper side, the roof panels have a beautiful galvalume finish.