Written answer by Ministry of National Development on maintenance issues for HDB car parks with interlocking tiles

Nov 7, 2023

Question No: 5360

Question by: Mr Lim Biow Chuan

To ask the Minister for National Development (a) whether HDB is aware of the maintenance issues relating to car parks with interlocking tiles; and (b) whether HDB will cease installation of interlocking tiles for future HDB projects.

Answer:

HDB has been using interlocking paving blocks at precinct driveways for more than 30 years. As compared to other road surfaces made of asphalt or concrete, interlocking paving blocks provide greater ease of access to underground services for maintenance and repairs, and are easier to reinstate when works are completed. They are also more environmentally friendly as they are made from recyclable materials.

2        Maintenance issues associated with interlocking paving blocks include loosening, dislodgement and unevenness of the blocks. These issues are likely caused by heavy usage in areas with high traffic flow, inconsistent workmanship, use of non-standard paving blocks, and improper repair and reinstatement works.

3        In 2022, HDB reviewed the use of interlocking paving blocks to enhance the design, material selection, construction control and ease of maintenance of the blocks. For high traffic areas in new HDB developments, such as refuse collection points, drop-off porches, loading and unloading bays, and car park entrances, HDB will provide concrete pavements. HDB will continue to use interlocking paving blocks for other areas where it is suitable to do so.