Flashing around chimneys, vents, and skylights is a primary focus during any metal-roof-repair inspection. Because metal expands at a different rate than masonry or plastic, the sealant at these transition points often pulls away. Effective metal-roof-repair requires removing the old, brittle caulk and applying high-performance polyether or silicone sealants designed specifically for ... https://kkroofspecialist.com.sg/metal-roof-repair/