Proposal to Install Double-glazed Windows in New HDB Flats Being Built in Areas Close to Main Roads, MRT Tracks or RSAF Flight Paths

Ms Mariam Jaafar asked the Minister for National Development whether HDB can install double-glazed windows in all new HDB flats being built in areas that are close to main roads, MRT tracks or RSAF flight paths.

In the context of our high-density environment, and with the Housing and Development Board (HDB) flats designed for natural ventilation, it is not possible to completely sound-proof a unit. Effectiveness of double-glazed windows are also limited and would require residents to close their windows to cut down noise. As such, HDB takes a holistic approach in designing HDB flats to mitigate noise.

For new HDB flats located close to land traffic noise sources, such as major arterial roads and MRT tracks, HDB carries out noise impact assessment (NIA) during the design consultancy stage to understand the noise impact on the new residential developments and put in place appropriate noise mitigation measures. HDB has also introduced facade designs with overhangs or canopies to deflect and abate land transport noise transmission into the dwelling units.

To mitigate the impact of aircraft noise, HDB is testing further noise mitigation measures and will introduce these when ready. Such measures include noise-cancelling technologies and innovative facade designs.