Who fixes a roof leak in a top-floor HDB flat?

Roof leak in an HDB top floor flat: who is responsible

For a flat on the topmost floor, HDB says a leak from the roof of the block comes from common property maintained by the Town Council, so you should contact the Town Council. For an external wall or the rooftop, HDB says the Town Council will bear the full repair cost (HDB: preventing and fixing ceiling leaks).

In practice, the roof itself is not a job for you or for a contractor you hire. Your part is to report the leak clearly, protect the inside of your flat and keep a record until the repair is done. If you rent the flat, tell the owner as well, so they know about the leak and any damage it has caused.

What to do now

A top floor ceiling leak can soak furniture and reach light fittings, so deal with the inside of your flat first and then report it.

1. Catch the water. Put a bucket or container under the drip, with a towel around it for splashes. Move furniture, electrical items and other belongings away from the wet area.
2. Keep water away from electrics. Keep water away from lights, sockets and switches, and do not touch them with wet hands. The Energy Market Authority (EMA) advises against using electrical appliances near water and touching an open outlet or switch with wet hands (EMA: Electrical Safety).
3. Photograph the stain. Take photos of the stain, the drip and any damage to your belongings. Note when it leaks, for example after rain, and when it stays dry.
4. Report it to the Town Council. HDB says to contact the Town Council about a leak from the roof of a topmost-floor flat. Give the location of the leak in your flat and share your photos and notes.
5. Keep a record of your report. Write down when you reported it, who you spoke to and any reference number. Add new photos if the stain spreads or the leak gets worse.

Keep the container in place and check it after heavy rain, as the leak may come and go with the weather.

Roof leak or a leak from somewhere else?

In other flats, ceiling leaks usually come from the flat above. HDB says water from the flat above seeps through the floor slab, usually from wear and tear of the waterproof membrane and screed, and that this typically occurs in toilets and bathrooms. For a leak between two flats, HDB says the owners arrange the repair and split the costs (HDB: preventing and fixing ceiling leaks). Our guide to a ceiling leak from upstairs covers that situation.

On the top floor there is no flat above, which makes a rooftop leak the likely cause. Still, look at where the stain sits. If it is right under a bathroom pipe or an aircon pipe, the water may be coming from that pipe instead, so mention this when you report the leak and have the pipe checked.

Damp that runs down a wall, rather than spreading across the ceiling, can have other causes. For that, see our guide to water seepage through walls.

After the leak: damage in your flat

HDB says untreated ceiling leaks may damage electrical items and cause mould growth (HDB: preventing and fixing ceiling leaks). If dark spots appear once it dries, see our guide to mould on the ceiling.

HDB says spalling concrete is common in older buildings, especially in damp areas, and is largely caused by carbonation, which corrodes the steel bars in the ceiling slab so the concrete cover cracks and bulges. HDB says the home owner is responsible for spalling repairs in the flat, and that you should not delay them, as the affected area becomes larger over time (HDB: spalling concrete). See our guide to spalling concrete.

Where to go next

The roof is only one part of the shared property in an HDB estate. For the rest of your block and estate, read who maintains what in an HDB estate. If water has only just started coming through, ceiling leak: what to do sets out the first steps in order. For repairs inside your flat once the roof is fixed, such as a stained ceiling, mould or a leaking pipe near the stain, use find the right service to match the job to a trade. Keep your photos and report record handy, as they help a company understand the damage.

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