BigPatents India

A.C. / G.I. corrugated sheet roof ware houses, godowns and low cost houses, cow sheds or poultry sheds etc., .Double or multi layer contra wave formation of A.C./G.I. corrugated sheet for roofmg the above. To increase the gap between adjacent layers an insulating strip with concave and convex surface is inserted along the line of contact. This type of roofing keeps the interior cooler in summer and warmer in winter than in the case of conventional roofmg pattern. This can be adopted even for the existing structures. With this method of roofing false ceiling will be avoided and running cost of A.C. systems, where installed is considerably reduced.