Frozen or burst pipe: the first‑hour action plan

Turn off the main stop tap immediately, keep people away from wet areas, and do not operate electrics in affected zones until checked by a professional if water has reached sockets, lighting, or wiring.​
Thaw frozen runs slowly using hot‑water‑soaked towels or hot‑water bottles—never a naked flame or blowtorch—and maintain low heating to prevent refreezing during recovery.​

• Secure the scene: Shut the stop tap and open a cold tap to depressurise if safe, then protect valuables and ventilate if appropriate.​

• Plan ahead: Know stop tap location and test it twice a year, and keep a plumber’s number by the boiler or stop tap for emergencies.​

• Background heat: Keep thermostats at or above frost‑protection level to avoid rapid temperature drops that trigger freezing in vulnerable pipework.​

• When away: Leave heating on low and arrange periodic checks, especially in severe weather, to spot issues before major damage develops.​

These steps align with UK winter safety guidance and reduce the chance of escalation while awaiting professional assistance.​