Ceiling leak in your flat: what to do first

Stay calm and protect your home

A wet patch or a steady drip from the ceiling is stressful, but most ceiling leaks follow a familiar pattern and a clear process. The first job is to limit the damage; the second is to find out where the water comes from; the third is to get the right person to fix it.

This article covers each step for flats in Singapore, including when the right first call is your neighbour, your Town Council or your management office, and when it is a private plumber. For the plumbing side in more depth, see the leak repair guide.

First steps in the first hour

• Move furniture, electronics and rugs away from the drip.
• Put a bucket or basin under the drip and lay towels around it.
• If water is near a light fitting, a power point or an appliance, switch off the power to that area at the DB box and do not touch the wet fitting.
• Take photos and a short video of the leak, the stain and any damage, with the date visible if possible.
• Note when the drip happens. Does it come when the flat above uses the shower, or when it rains, or all the time?

The timing notes are surprisingly useful. A drip that follows a neighbour's shower points to a different cause from one that appears only during heavy rain.

Work out where the water comes from

In flats, most ceiling leaks come from the unit directly above, often from a bathroom floor, a pipe joint or a waterproofing problem. Some come from shared pipes or from the roof on the top floor, and a few come from your own pipes running through the ceiling space.

Knowing which of these it is decides who should fix it. Do not open up the ceiling or hack anything to find out; that can make the repair harder and the cost discussion more complicated.

Talk to your neighbour and follow the HDB process

If you live in an HDB flat and suspect the flat above, speak to your neighbour first. Share your photos and timing notes calmly. Many leaks are resolved quickly once both households know about them.

HDB's ceiling-leak guidance explains how ceiling leaks in flats are handled. Read it before you book any repair, so you know which steps to follow and what to keep a record of.

For condominiums, the management office is usually the first contact, especially if the leak may come from common property.

When the problem is a shared pipe

Leaks from common drainage stacks, corridor pipes or the roof are normally handled by the Town Council for HDB estates or the management office for condominiums. If the water seems to come from a shared pipe or from outside the flat above, contact them before you book a private plumber.

When to call a plumber

A private plumber is the right call once the source is confirmed to be inside your own home, or when the household above asks you to recommend one for a leak in their flat. Plumbers can trace leaks from pipes and fittings, replace damaged sections and repair connections.

PUB's requirements for plumbing works explain which water-supply and sanitary work must be done by a licensed plumber. Ask the company who will do the work and whether that person is licensed for it. The licensed plumber guide explains how to check, and the plumbing guide covers how to compare companies.

Waterproofing a bathroom floor is often a separate job from plumbing, and some plumbing companies do not offer it. Ask whether the company handles both, or whether you will need a separate contractor.

What to tell the plumber

• Where the leak is and how big the stain or drip is.
• When it happens, using your timing notes.
• Whether you have spoken to the neighbour, the Town Council or the management office, and what they found.
• Photos and video of the ceiling and any fittings nearby.
• Whether your home is an HDB flat, a condominium or a landed house.

Ask for the inspection charge before the visit, ask how they plan to trace the leak, and agree the price of any extra work before it starts.

After the repair

Once the leak is fixed, let the ceiling dry fully before repainting. Damp plaster can blister or stain again if it is painted too early. Keep your records, including the final repair report, in case the stain returns.

If the stain comes back, note the timing again and contact whoever carried out the repair first.

Questions

Who should I contact first about a ceiling leak in my HDB flat?

Start with the neighbour above if the leak seems to come from their flat, and read HDB's ceiling-leak guidance for the process. If it may come from a shared pipe or the roof, contact your Town Council.

Should I open up the ceiling to find the leak?

No. Opening or hacking the ceiling can make the repair harder and complicate the discussion about who pays. Record the leak with photos and timing notes and let the inspection find the source.

When is a plumber the right call?

Once the source is confirmed to be inside your own home, or when your neighbour needs a plumber for a leak in their flat. Ask who will do the work and whether they are licensed for it.