What to do first when a pipe bursts, how to thaw frozen pipes without causing a burst, finding the actual source of a leak, and what counts as an emergency against what can wait.
If something is happening right now
Turn the water off at the stopcock. Turn the electricity off at the consumer unit if water is anywhere near it, wiring, or a ceiling below. Then call. Water reaching electrics is the part that makes a plumbing problem a dangerous one.
| What is happening | Go to |
|---|---|
| A pipe has burst | The first five minutes |
| Cannot find the stopcock | Find your stopcock |
| No water from any tap | No water at all |
| Pipes frozen | Frozen pipes: thawing safely |
| Water under the sink | Finding the actual source |
| Need to shut the heating down | Isolating heating and hot water safely |
| Not sure if it can wait | What counts as an emergency |
| Damage has been done | Water damage and insurance |
For a gas smell, call the National Gas Emergency Service on 0800 111 999 from outside the property. For an oil spill reaching ground or a watercourse, contain what you can and report it.
The guide to read before you need any of them
Find your stopcock before you need it is the most useful thing on this site, and it takes ten minutes on a dry afternoon.
Because the problem is never finding it in principle. It is finding it at eleven at night, in the dark, under a cupboard full of cleaning products, with water coming through a ceiling – and then discovering it has seized because nobody has turned it for fifteen years.
What to do now, while nothing is wrong:
- Find it. Usually under the kitchen sink, sometimes in a utility, a downstairs cloakroom, a garage, or under the stairs.
- Turn it off and back on. Confirm it actually works and actually stops the water.
- If it is stiff or weeping, get it replaced – see stopcocks and mains. A modern lever valve is a fraction of the cost of one flood.
- Find the external stop tap too, usually under a small cover at the boundary, and check you have something that will reach it.
- Tell everyone in the house where it is.
- Label it. Genuinely – a luggage tag is enough.
Do the same for the heating: know where the boiler’s isolation switch and the gas or oil supply valve are – isolating heating and hot water safely.
Frozen pipes, where doing the wrong thing causes the burst
Norfolk gets hard frosts, and frozen pipes are a seasonal certainty in unheated spaces – lofts, garages, outbuildings, and any run against an outside wall.
The critical point is that a frozen pipe has usually not burst yet. The damage happens when it thaws, or when somebody thaws it badly. So what you do next genuinely determines the outcome.
- Never use a naked flame, a blowtorch, or a heat gun. Localised heat expands water violently in a confined space and splits the pipe.
- Warm it gently and gradually – warm cloths, a hairdryer on low kept moving, warm (not boiling) water.
- Start at the tap end and work backwards, so melt water has somewhere to go rather than being trapped between two ice plugs.
- Open the tap first, so there is a route out and pressure cannot build.
- Turn the stopcock off before you start, so if it has split you find out with minimal water behind it.
- Be ready with towels and a bucket.
Frozen pipes: what to do covers it properly, and frozen condensate pipes deals with the boiler-specific version that shuts heating down in every cold snap.
See also frozen pipes and pipe insulation, which is what stops it recurring.
Afterwards
Water damage and insurance covers what to photograph and when, which matters because the evidence people wish they had is almost always from the first hour.
Briefly: photograph everything before you move or clean anything, including the source; keep damaged items until the insurer has seen them or agreed otherwise; keep receipts for anything you buy to limit the damage; and notify promptly, because most policies require it.
And what counts as a plumbing emergency is worth reading calmly, because it saves both an unnecessary call-out charge and, occasionally, a much worse outcome from waiting.
See also emergency plumber, burst pipe repair and the emergency triage tool.
Something happening now? Turn the water off first, then call – we take emergency call-outs across Norfolk.
Questions we get asked about this
What do I do first if a pipe bursts?
Water off at the stopcock, electricity off at the consumer unit if water is near wiring or a ceiling below, then call. In that order.
Where is my stopcock?
Usually under the kitchen sink, sometimes a utility, cloakroom, garage or under the stairs. Find it and turn it now, on a dry afternoon – seized stopcocks are discovered at the worst moment.
How do I thaw a frozen pipe?
Gently and gradually, starting at the tap end, with the tap open and the stopcock off. Never a naked flame or a heat gun – localised heat is what splits the pipe.
Is no water an emergency?
Check with a neighbour and your supplier first – if the street is affected it is theirs, not yours, and may cost you nothing. The guide works through it.
What should I photograph for insurance?
Everything, before you move or clean anything, including the source. The evidence people wish they had is almost always from the first hour.
Can it wait until Monday?
Sometimes, and sometimes waiting is what makes it expensive. There is a guide that works through which is which without needing to guess.
What we cover
Emergencies
- A leak under the sink: finding the actual source
- A pipe has burst: the first five minutes
- emergency guide 1
- emergency guide 2
- emergency guide 3
- emergency guide 4
- emergency guide 5
- emergency guide 6
- emergency guide 7
- emergency guide 8
- Find your stopcock before you need it
- Frozen pipes: thawing safely, and what never to do
- Isolating heating and hot water safely
- No water coming out of any tap: what to check first
- Water damage and insurance: what to photograph, and when
- What counts as a plumbing emergency, and what can wait until Monday
Need this doing?
Call and describe the problem — you will speak to an engineer, not a call centre. Written quotes, no estimates over the phone.