HDB identifies two new repair methods for ceiling leaks Toggle share menu Advertisement HDB identifies two new repair methods for ceiling leaks A view of public housing blocks, with solar panels affixed to the roof of some blocks, in Singapore on Jun 27, 2019. (File photo: Reuters/Kevin Lam) 03 Feb 2021 03:36PM) Share this content Bookmark SINGAPORE: The Housing and Development Board (HDB) has been exploring new technologies to improve on current repair methods for ceiling leaks, and has identified two new options, said Minister of State for National Development Muhammad Faishal Ibrahim on Tuesday (Feb 2). The two new repair methods - the nanotechnology waterproofing system and overlaying waterproofing membrane system - provide alternative options for residents who do not wish to hack their toilet tiles or who prefer to keep the existing finishes in their toilets, said Dr Faishal.