Weight is an important factor that a metal-roof-contractor evaluates during the planning phase. Interestingly, metal is often much lighter than asphalt shingles or clay tiles. This means that a metal roof puts less stress on the walls and foundation of the building. In some cases, it can even be installed over an existing roof, saving on tear-off costs and reducing waste. Your contrac... https://kkroofspecialist.com.sg/metal-roof-contractor/