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The freeze is quiet and the flood comes later. Here's how to thaw a pipe without wrecking it — and how to make sure next winter passes you by.
A pipe's frozen — what do I do right now? Close the stopcock before you thaw anything, open the tap nearest the frozen section, then work gentle heat along the pipe from the tap end back — a hairdryer on low, towels soaked in warm water, a heated room. Never a naked flame, never a blowtorch, never boiling water. If the pipe has already split, leave the water off and ring 020 4577 2888 to be put through to a local plumber, any hour.
One tap dead or dribbling in freezing weather is the classic tell. The rest of the house running fine just narrows down which pipe run is iced up.
Our winters here are more damp than Arctic, and that's exactly what catches people out — a mild fortnight, then a hard frost comes down off the hills and any pipe that never got its insulation turns to a solid stick of ice overnight. A tap that won't run, or barely dribbles, when the temperature has dropped below freezing is the sign to trust.
The usual suspects are the pipes that live outside the warm heart of the house: lofts, garages, outbuildings and external walls. Rural properties around Newry with long supply runs in from the road feel it hardest of all. Trace the dead tap's pipework back through the coldest spaces it crosses and you'll usually find the frozen stretch — sometimes with frost or a slight bulge on the pipe to confirm it.
Stopcock off, tap open, then gentle heat from the tap end back. A naked flame is never the answer — not a blowtorch, not a lighter, not once.
Stop thawing and keep the water off. Melting the ice with the mains on simply books your flood in for later.
A split doesn't always announce itself — the pipe freezes silently, cracks silently, and behaves until the thaw. If you spot a bulge, a crack or a weep anywhere along the frozen run, or water appears as things warm up, treat it as a burst: leave the stopcock closed, open the cold taps to drain the pipework, and keep heat away from the damaged section.
From there it's the burst-pipe drill, and our burst pipes guide walks through it step by step — electrics safe, boiler off if the heating side is involved, then the phone. Tell the plumber it was a freeze and where the split is; that conversation shapes what they bring in the van.
Lag the cold-space pipes in autumn, keep the heating ticking over in a cold snap, and know your stopcock. Lagging those runs is the cheapest plumbing job you'll ever do.
Foam pipe insulation costs little, cuts with a bread knife, and pushes on in minutes — work through the loft, the garage, any outbuilding, external walls and outside taps, and don't skip the awkward short sections. If your property runs on a long supply line from the road, as many out in the townlands do, those exposed runs deserve first place in the queue.
When a hard frost is forecast, keep the heating ticking over gently rather than letting the house go stone cold overnight, and open the loft hatch a crack on the bitterest nights so house warmth reaches the pipes and tank up there. And go find your stopcock tonight, while everything is dry — the kindest thing you can do for your future self is know exactly where it is before you need it in a hurry.
No — the shock of boiling water on a frozen pipe can crack it, and it does plastic pipework no favours either. Warm is the word: towels soaked in warm water, a hairdryer on its lowest setting, or simply heating the room. Slow feels frustrating, but slow is what keeps a frozen pipe from becoming a burst one.
Yes — open the tap nearest the frozen section before you start. It gives the meltwater and the trapped pressure somewhere to escape, and the moment it starts to dribble you'll know the thaw is working. Keep the stopcock closed while you work, though, in case the ice has already split the pipe somewhere you can't see.
Because the freeze happens to a pipe run, not to the whole house. The dead tap tells you which run is iced up — usually the stretch passing through the coldest space it crosses, a loft, a garage, an outbuilding or an external wall. That's exactly where to aim your gentle heat, working back from the tap.
During a hard frost, yes — keeping the house gently warm through the night keeps the pipework in walls, floors and the loft above freezing, which is far cheaper than a burst. It's a cold-snap habit, not a whole-winter rule. Opening the loft hatch a crack on the bitterest nights lets house warmth reach the tank and pipes up there too.
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