PU Injection Grouting in Singapore (also known as polyurethane injection grouting or PU grouting) is a leading non-hacking waterproofing technique widely used to permanently seal cracks, joints, voids, and active water leaks in concrete structures. It’s especially popular in Singapore’s humid, rainy tropical climate for addressing issues in HDB flats, condos, landed homes, basements, ... https://buildbestroofing.com.sg/pu-injection-grouting-singapore/