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Winter pipe lagging in Kent: what actually needs protecting

Kent does not get the hardest winters in the country, but a sharp cold snap still catches out the same pipes every year, almost always because nobody thought about them until they had already burst.

Which pipes are actually at risk

Any pipe run through an unheated space, a loft, a garage, an outbuilding, or against an external wall, is at risk once temperatures drop below freezing for a sustained period. Pipes inside heated living space are very rarely a problem. The classic failure points are loft pipework feeding a cold water tank, external tap supply pipes, and pipework in an unheated utility room or garage.

The outside tap mistake

The single most common winter call-out is a burst outside tap, and it is almost always avoidable. If your outside tap does not have its own isolation valve and drain-down point inside the property, the pipe feeding it stays full of water all winter and any hard frost can split it. Fitting a proper isolation and drain-down valve once means you can shut off and drain that pipe every autumn in under a minute, which is a genuinely cheap fix compared with a burst pipe repair in January.

Lagging the loft

Foam pipe lagging (pre-slit foam tubes that clip around the pipe) is inexpensive and straightforward to fit yourself on accessible loft pipework, and is one of the best-value pieces of DIY winter prep available. Pay particular attention to any pipe run close to the loft hatch or an eave, where cold air gets in fastest, and to the cold water tank itself if your loft has one.

What to do before a cold snap

Isolate and drain any outside tap that is not already protected, check loft lagging is still in place and has not slipped or been disturbed by other loft work, and if you are going away for an extended period in winter, know where your stopcock is in case a pipe does fail while nobody is home to notice quickly.

If a pipe does freeze

A frozen but not yet burst pipe will simply stop supplying water to a tap. Do not use direct heat like a blowtorch on it, gentle heat (a hairdryer on a low setting, or towels soaked in warm water) applied along the pipe from the tap end back toward the blockage is the safe approach, with the stopcock left accessible in case it does turn out to have already split.