Extension of garage roof Problem; Existing roof garrage was not cover 2 cars. Natural light is required during day time as well as heat protection. New structure can not be solidly attached to exisiting ones due to their defferent ratio of settlement. Solution; Applied light weight roof material on its light gage steel frame. "PLEGLAS" Heatstop Cool Blue a celled acrylic with their translucent and heat stop use to be a roofing material due to its caracteristic and their 30 years warantee of yellowing. Attachment to exisiting was also matter to its construction. Hinge method was applied to take the their load transferred to existing beam. Part of the load was bared by piles and pile caps a both columns. Credit; Pete Dannett