Burst Pipe: What to Do in the First 10 Minutes
When a pipe bursts, the first ten minutes decide whether you're dealing with a wet patch or a ruined ceiling. Water damage compounds by the minute, but the sequence that limits it is short and learnable: stop the water, kill electrics near the wet, drain what's in the pipes, and protect what's beneath. Read this before you ever need it — mid-flood is a bad time to learn.
Minute one: stop the water
Go straight to your internal stopcock — commonly under the kitchen sink, in a downstairs toilet, under the stairs or by the front door — and turn it clockwise until it stops. This cuts the mains feed and is the single most damage-limiting act available to you. If it's seized or you can't find it, use the outside stop valve at the boundary (in the pavement chamber, often needing a long key) or, failing that, close the isolation valve nearest the burst if one exists.
If the burst is on a hot or tank-fed pipe, water will keep coming after the stopcock closes — that's the stored water, dealt with in minute three. Don't panic that the stopcock 'hasn't worked'.
Minute two: electrics and safety
Water finding light fittings, sockets or the consumer unit changes the situation from expensive to dangerous. If water is anywhere near electrics, switch off the affected circuits at the consumer unit — the lighting circuit for a ceiling leak, everything if in doubt and the consumer unit itself is dry and safe to approach. Never touch wet electrical fittings.
If the consumer unit area is itself wet, don't touch it — stay clear and get an electrician alongside the plumber.
Minutes three to five: drain the system down
With the mains off, open every cold tap in the house, starting at the lowest — this empties the pipes and the loft tank (if you have one) through the taps instead of through your ceiling. Flush toilets. Then open hot taps to relieve the hot side. On a gravity system with the burst fed from the loft tank, this step is what actually stops the flow.
If you have a hot water cylinder, switch off the boiler/immersion so it isn't heating an emptying cylinder. Don't drain the cylinder itself unless instructed — its valves matter and a plumber will handle it.
Minutes five to ten: contain, protect, document
Put buckets under active drips, pierce a bulging ceiling at its lowest point (small hole, bucket beneath — controlled release beats collapse), move furniture and electricals clear, and lift rugs. Towels at doorways slow spread across floors. Then call an emergency plumber — with the water off, you've converted a crisis into a controlled repair, and you can honestly describe what you found.
Photograph everything as you go: the burst location, the damage, the standing water. Your insurer will want the story, and time-stamped photos tell it best. Keep any failed pipe section the plumber removes.
| Step | Action | Why |
|---|---|---|
| 1 | Stopcock off (clockwise) | Stops mains inflow |
| 2 | Circuits off if water near electrics | Removes shock/fire risk |
| 3 | Open all cold taps, flush toilets | Drains pipes & tank safely |
| 4 | Open hot taps, heat sources off | Relieves hot side |
| 5 | Contain, pierce bulges, move valuables | Limits damage |
| 6 | Call plumber, photograph | Repair & insurance |
The kit worth having ready
A small emergency shelf beats improvisation at 2am: a torch, a bucket, old towels, self-amalgamating tape for temporary pipe wraps, and — if your outside stop valve needs one — a stopcock key. Add your regional emergency number saved in your phone and the stopcock location known to everyone in the house, and you've covered the first ten minutes of nearly every domestic water emergency.
Frequently asked questions
Water is still flowing after I closed the stopcock — why?
You're seeing stored water: the loft tank and pipework draining through the burst. Opening all taps redirects that stored water out through the taps instead. If genuinely mains-pressure water continues, the stopcock hasn't fully closed or isn't the true main — try the outside valve.
Should I try to seal the pipe myself?
Containment, yes — a self-amalgamating tape wrap or a proprietary clamp over a pinhole can reduce spray while you wait. But treat anything you apply as temporary. The permanent repair replaces the damaged section.
Is a burst pipe covered by insurance?
The resulting damage usually is (escape of water); the pipe repair itself usually isn't. Photograph everything, keep invoices, and check for trace-and-access cover if the burst is concealed. Notify your insurer promptly.
How fast can an emergency plumber realistically arrive?
In urban areas, 1–2 hours is typical for a genuine emergency; rural response runs longer. This is exactly why the shut-off sequence matters — with water off and drained, the wait costs you nothing further.
Sorting it for good
The recurring theme across our guides holds here too: fix causes, not symptoms. A repair that addresses why the fault happened — the pressure that's too high, the scale that keeps returning, the valve that should have been replaced a decade ago — is the one you don't repeat next year. When you book through our network, tell the engineer you want the cause addressed, not just the symptom silenced; it occasionally costs a little more on the day and reliably costs less over the years.