A clear, formal warranty on both the workmanship and the materials used is a crucial safeguard provided by a diligent $. For waterproofing membrane repairs, the contractor's workmanship warranty should typically span 2 to 5 years, guaranteeing the repair area remains leak-free under normal conditions. The material warranty, provided by the product manufacturer, covers defects in the c... https://kkroofspecialist.com.sg/roof-repair-contractors-singapore/