Gilashin insulating, wanda kuma aka sani da gilashin Layer biyu, yana amfani da bangon waje na gine-gine.Yana nufin tsarin tsarin tallafi tare da wasu iyawar nakasa idan aka kwatanta da babban tsari, amma tsarin tsarin gilashin ba ya raba nauyin nauyi ko tsarin nauyin ginin da babban jiki.Ita ce bangon ginin, wanda aka fi yin shi da gilashin Layer biyu tare da insulation da kuma sautin murya