The underlayment is a hidden but vital component that any good metal-roof-contractor will discuss with you. High-temperature synthetic underlayment is necessary to withstand the heat that metal panels can generate. A meticulous metal-roof-contractor ensures that this secondary water barrier is installed without wrinkles or gaps. This "belt and suspenders" approach by your metal-roof-c... https://kkroofspecialist.com.sg/metal-roof-contractor/