How do I protect against frozen pipes?

Cold weather can cause water to freeze. This is a problem because when water freezes in a pipe and turns to ice it expands. As the ice expands, it increases pressure on the pipes and joints, often causing them to split or joints to pull apart.

Check all pipes inside your home and any bare pipes outside your home are lagged and protected before the cold weather comes. Your local plumbing merchants and DIY stores can help you find the right insulation.

The Water Regulations Advisory Scheme has an easy-to-use tool to work out how effective insulation will be in delaying the effects of cold weather on water pipes.

WaterSafe plumber Colin Stainer shows you how to quickly and easily insulate pipes in our video.

If you're not confident in doing it yourself, a qualified plumber will be able to help you. Use our postcode search to find a WaterSafe recognised plumber near you.

You can protect your pipes and fittings from freezing by:

  • Insulating all pipes in unheated areas like lofts, roofs, garages and outbuildings.
  • Fitting your water tank with an insulation jacket or alternatively the top and sides of the tank can be wrapped with suitable insulation material.
  • (Don’t place loft insulation under the tank though as this stops heat from the rooms below helping to keep the water in the tank from freezing).
  • Insulate toilet cisterns, water tanks or pipes in exposed places or unheated outbuildings. Better still, if not in use, drain them for the winter.
  • Leaving your heating on a low setting especially if your home is empty for a while.
  • Checking your central heating boiler has been serviced.
  • Finding your stop tap - so you can turn off the water supply quickly if a pipe freezes or bursts. Most are under the kitchen sink, or sometimes in a cupboard, garage or cellar.
  • Turning off your water supply and draining the system if you’re going to be away for a while – a WaterSafe recognised plumber will be able to give you advice.
  • Giving neighbours a key for your home and contact details for someone to help in an emergency if you go away.
  • Repairing leaks at taps or valves as soon as you discover them.

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