Waterproofing is a non-negotiable requirement for metal roofing in Singapore, given the high volume of annual rainfall; a robust system includes not only the metal panels but also a high-quality underlayment, often a synthetic self-adhering membrane, installed beneath them as a secondary weather barrier; meticulous attention must be paid to the roof's most vulnerable points: the penet... https://kkroofspecialist.com.sg/metal-roofing-singapore/