How to Prevent Burst Pipes in Winter

Burst pipes spike in winter for a simple reason: water expands as it freezes, and that expansion puts enormous pressure on pipe walls — especially in exposed or poorly insulated sections.

Insulate exposed pipework

Pipes in unheated spaces — garages, outside walls, roof spaces — are the most vulnerable. Pipe insulation sleeves are inexpensive and make a real difference in protecting these sections through cold snaps.

Know where your main stopcock is

If a pipe does burst, being able to shut off the water supply immediately is the single biggest factor in limiting damage. Make sure everyone in the household knows where it is and how to use it.

Let taps drip on very cold nights

A slow drip keeps water moving through the pipe, which makes it harder for ice to form and build up pressure.

Check outdoor taps and irrigation systems

Disconnect hoses, and if you have an irrigation system, drain it before the coldest part of the season. Trapped water in outdoor fittings is one of the most common places for a freeze-related burst.

Keep your home consistently heated

Even a modest, consistent temperature indoors reduces the risk to interior pipework significantly more than letting the house go cold and heating it intensely only when occupied.

If a pipe does burst

Shut off the main water supply immediately, and if it’s near electrics, switch off power to that area too before anything else. Then get it looked at — a burst pipe repaired quickly causes far less damage than one left running.