How to Fix a Burst Pipe
Last updated: 7 September 2026
Turn off the main stopcock immediately, drain the system by opening all cold taps, apply a temporary repair if safe, and call a qualified plumber for a permanent fix.
Overview
A burst pipe is one of the most serious plumbing emergencies a homeowner can face. This guide covers immediate action steps to stop the leak, minimize water damage, and understand when to call a professional plumber.
Step-by-Step Fix
Before beginning any repair, ensure you have isolated power or water supplies. Clear your workspace, gather standard hand tools, and wear appropriate personal protective equipment (PPE).
- First and foremost, locate your main stopcock valve, which is typically found under the kitchen sink, near the front door, or in a utility cupboard. Turn it fully clockwise until it stops to completely shut off the water supply to your property. This is the single most critical action you can take to prevent further water damage and should be done before doing anything else.
- After shutting off the main supply, open all cold water taps throughout your home to drain any remaining water from the system. This relieves pressure on the burst pipe and reduces the volume of water that can escape from the rupture. Leave the taps open until the water stops flowing completely.
- If the burst pipe is in an accessible location, apply a temporary repair using a pipe repair clamp, a rubber patch secured with a hose clip, or even a strong waterproof tape wrapped firmly around the leak. This is a temporary measure only and will not replace a professional repair, but it can significantly reduce water flow until a plumber arrives.
- If water has come into contact with electrical sockets, appliances, or wiring, immediately turn off the electricity supply at the consumer unit or fuse box. Do not touch any electrical switches or appliances if you are standing on wet flooring, as this creates a serious risk of electric shock.
- Begin removing standing water as quickly as possible using towels, mops, or a wet vacuum cleaner. The faster you remove water, the less damage it will cause to flooring, skirting boards, and the structural fabric of your home.
- If your home has a gas boiler or water heater connected to the burst pipe, turn off the boiler at the mains switch to prevent it from running dry and potentially causing further damage.
- For pipes located in exterior walls or unheated areas, check whether the pipe has frozen. If the pipe is still frozen in addition to being burst, do not attempt to thaw it with a blowtorch or direct flame, as this is extremely dangerous.
- Once the immediate emergency is under control, call a qualified plumber for a permanent repair. Explain the situation clearly and inform them whether the pipe is still leaking or if your temporary repair has held.
- While waiting for the plumber, take photographs of the damage for your insurance claim. Record the date and time of the incident, keep receipts for any materials you purchased for temporary repairs.
- After the plumber has completed the permanent repair, check your property thoroughly for any signs of water damage, including damp patches on walls, swollen skirting boards, or loosened floorboards.
Common Symptoms & Diagnostic Resolutions
Review the common error codes and operating symptoms below to quickly identify the root cause of the fault before ordering replacement parts.
| Symptom / Code | Likely Root Cause | Recommended Resolution |
|---|---|---|
| Water flow continues after stopcock closed | Stopcock is not sealing correctly or there is a secondary water source such as a header tank | Check the stopcock is fully closed; if water still flows from the burst pipe, there may be a second water source such as a cold water storage tank in the loft that is still draining. Turn off the valve on the outlet pipe of the header tank to isolate it. |
| Pipe split visible but no water flow | Water supply has been successfully isolated | This indicates your emergency actions have been effective. Keep the water off and call a plumber for a permanent repair. Do not turn the water back on until the repair is complete. |
| Temporary patch not holding | Water pressure is too high for the temporary repair material | Reinforce the patch with additional layers of waterproof tape or a larger rubber patch secured with two hose clips placed on either side of the split. |
| Loss of water pressure in other taps | The burst pipe is drawing water away from the rest of the system or the stopcock is partially closed | This is a normal consequence of a burst pipe. Ensure the stopcock is fully closed to stop water flow to the burst pipe, which will restore pressure to the rest of the house once the repair is complete. |
Frequently Asked Questions
What tools and materials should I keep for a burst pipe emergency?
Keep a pipe repair clamp, self-amalgamating tape, a roll of waterproof tape, a pair of adjustable spanners, a bucket, and a torch in a readily accessible location. It is also wise to know where your stopcock and gas meter are located and to have the emergency numbers for your water supplier, a Gas Safe registered engineer, and a local plumber saved in your phone.
How do I prevent pipes from bursting in the future?
Insulate all exposed pipes in unheated areas such as lofts, garages, and underfloor spaces using foam pipe insulation. During cold weather, leave a trickle of water running from a tap furthest from the stopcock to keep water moving through the system. Set your thermostat to at least 10 degrees Celsius when you are away from home during winter months to prevent freezing.
Will my home insurance cover the cost of a burst pipe repair?
Most comprehensive home insurance policies cover burst pipe repairs and resulting water damage, but policies often exclude damage caused by gradual leaks or lack of maintenance. Check your policy documents carefully and contact your insurer as soon as possible to report the claim.
How much does it typically cost to repair a burst pipe?
The cost of repairing a burst pipe varies depending on the location and accessibility of the pipe, the extent of the damage, and the plumber rates. On average, a straightforward burst pipe repair costs between £150 and £400, but if the pipe is in a hard-to-reach location such as behind a wall, under a concrete floor, or in a ceiling void, the cost can rise to £500-£1000 or more.