For many Singaporean homeowners, the best waterproofing solutions in Singapore are those that don't require hacking tiles. PU (Polyurethane) Injection Grouting is a popular "non-invasive" method used to fix ceiling leaks in HDB flats and condos. By injecting an expanding resin into concrete cracks, the material reacts with moisture to form a dense, rubbery seal. This stops water seepa... https://shakuraconstruction.sg/services/psb-certified-fire-rated-partition-wall-ceiling/