The forecast mentions minus four by Thursday, and the boiler has started making a noise it did not make last winter. Cold snaps in the UK rarely arrive with much warning, and the damage they do — a frozen condensate pipe, a burst feed in the loft, an older neighbour sitting in a cold front room because she does not want to touch the thermostat — is nearly always preventable. Most of the work takes an afternoon. Here is what to sort out before the temperature drops, and what to keep an eye on once it has.
Stop the heat leaving before you make more
Insulation is unglamorous and it works. Start in the loft, because that is where a large share of your warmth disappears. If you can still see the joists, there is room for another layer. Take care not to bury cables or to push insulation into the eaves in a way that blocks ventilation.
Then walk the house looking for moving air. You will feel it on the back of your hand before you see it.
- Draught-proof letterboxes, keyholes and the gaps under the front and back doors. A brush strip and a fabric sausage cost very little and make an immediate difference.
- Close curtains at dusk and open them on bright mornings. Thermal linings help, especially on older single-glazed windows.
- Fit reflective foil behind radiators fixed to external walls, so heat bounces back into the room instead of into the brickwork.
- If you have an open chimney you never use, a chimney balloon or draught excluder stops a surprising amount of cold air coming down it.
One caution: never block the vents that supply a gas boiler, fire or cooker. A warmer house is not worth a carbon monoxide risk. If you do not already have a carbon monoxide alarm, buy one and test it.
Give the boiler and radiators a once-over
An annual service is the single best way to avoid a breakdown on the coldest night of the year, and it is worth booking before the rush rather than during it. While you are at it, bleed the radiators: if the top of a radiator is cold while the bottom is warm, there is air in the system. A radiator key, a cloth and a few minutes per radiator is all it takes.
Check the pressure gauge on your boiler against the figure in the manufacturer's manual — topping up is usually a simple job with the filling loop, but if you are unsure, leave it to a Gas Safe registered engineer.
Set timers so the heating comes on before you get up rather than when you do. For anyone who is older, unwell or has reduced mobility, keeping the main living room at around 18°C is the sensible target, and a little warmer if someone is sitting still for long periods.
If you use electric heaters as backup, plug them directly into a wall socket rather than an extension lead, keep them clear of curtains and furniture, and never run a camping stove, paraffin heater or barbecue indoors. They produce carbon monoxide.
Pipes, taps and the things that freeze
Lag exposed pipes in the loft, garage and any unheated extension. Insulate the outdoor tap. Find your stopcock now, while the lights are on and you are not panicking, and make sure everyone in the house knows where it is and how to turn it off.
If you are going away, leave the heating on a low background setting rather than switching it off entirely. A frozen condensate pipe is the most common reason a boiler stops in cold weather; if the white plastic pipe outside has iced up, pouring warm — not boiling — water along it often clears it. Boiling water can crack the pipe.
Medication and health planning
Order repeat prescriptions a week earlier than usual. Cold weather disrupts deliveries, surgeries run reduced hours, and pharmacies get busy. Do not stockpile beyond what you need, but do make sure you are not going to run out on a Sunday when everything is shut.
Check expiry dates on inhalers and keep a reliever inhaler within reach. Cold air is a common trigger for asthma and for chest symptoms in people with COPD, so a scarf worn loosely over the nose and mouth while outdoors genuinely helps.
Other practicalities worth sorting:
- Keep a few days of easy food in the cupboard, including something you can eat without cooking if the power goes.
- Check your thermometer works and keep one in the room you use most.
- Keep salt or grit by the door for steps and paths, and wear shoes with grip. Ice is the main cause of winter injuries, not the cold itself.
- If you are eligible for a flu vaccination and have not had one, book it.
If you have a long-term condition and are unsure how the cold affects it, or you are taking medication that needs monitoring, speak to your GP or pharmacist for advice rather than guessing.
Knock on a neighbour's door
The people most at risk are not always the ones who ask for help. Older neighbours, anyone with a disability or a long-term illness, people living alone, and households with a new baby are all worth checking on before the freeze rather than during it.
A knock and a short conversation covers most of it: are you warm enough, do you have enough food and medication, is anything broken. Swap mobile numbers. Offer to pick up shopping or a prescription when you go out anyway, and to clear a path if snow settles. If someone is worried about the cost of heating, point them towards their local council, Citizens Advice or their energy supplier — there are schemes and grants that many people do not know they qualify for.
Ask rather than assume. Most people would rather be asked than fussed over, and a simple "I'm doing a run to the shop, do you need anything?" works far better than an inspection.
A two-hour cold snap routine
None of this needs to be done perfectly. Work through what you can:
- Bleed radiators, check the boiler pressure and book a service if it is overdue.
- Draught-proof the front and back doors and check the loft.
- Lag exposed pipes and locate the stopcock.
- Order prescriptions and check inhalers and first-aid supplies.
- Test smoke and carbon monoxide alarms.
- Check on two neighbours who live alone.
Once the cold arrives, keep one room properly warm rather than trying to heat the whole house, close doors behind you, and move around a little each hour. Check the forecast for the following night rather than just today — the second night of a cold snap is usually the one that catches people out.
And if something does go wrong, deal with the practical thing first: warmth, water off if a pipe has burst, and a call to a professional for anything involving gas. Everything else can wait until morning.
Photo: Aiky82 / Pixabay
