Thermal expansion is a physical property that every metal-roofing-contractor-singapore must manage. As the sun beats down, metal panels expand; as they cool at night, they contract. If the roof is fastened too tightly, it can buckle or create loud popping noises. Experts use sliding clips and thermal spacers to allow the panels to move naturally without compromising the seal. This tec... https://kkroofspecialist.com.sg/metal-roofing-contractor-singapore/