Frozen Pipes in Antrim — Prevent, Then Thaw Gently

Which pipes freeze first in an Antrim home?

The ones nobody heats and nobody looks at. Antrim's lowland winters hover around freezing for weeks rather than plunging once, which is exactly the weather that catches an under-insulated pipe quietly — it freezes without drama, splits inside the ice, and announces itself in the thaw. Walk the house with that in mind and the risk list writes itself:

• Loft runs above the insulation, especially feeds to tanks and outside walls.
• Pipes in garages, outbuildings and unheated utility rooms.
• Anything clipped to an external wall, including outside taps and their feeds.
• The boiler's plastic condensate pipe where it runs outdoors — a frozen one locks the boiler out.

A tap that slows to a dribble in a cold snap is the early warning. Treat it as one, not as a curiosity.

How do you stop the freeze before it starts?

1. Lag the exposed runs. Foam pipe insulation is cheap, cuts with scissors and fits in an afternoon. Do the loft, the garage and any outside-wall pipework, and do not skip the bends and valves — they freeze first.
2. Keep the heating ticking over. In a cold snap, a low steady setting through the night beats bursts of heat with cold gaps between. If the house will stand empty, leave the heating on low or shut off and drain the water instead.
3. Isolate the outside tap. Most have an isolation valve indoors. Close it and drain the tap before winter.
4. Know your stopcock now. The two-minute drill on the home page exists for exactly this week. If a pipe does let go, the difference between a puddle and a ruined ceiling is how fast you can shut the water off.

How do you thaw a frozen pipe without wrecking it?

1. Stopcock off first. If the ice is hiding a split, thawing with the supply on turns a frozen pipe into a flood. Shut it, then work.
2. Open the affected tap. Melting water needs an exit, and returning flow tells you the blockage has cleared.
3. Gentle heat, tap end back. Hairdryer on low, towels soaked in warm water, or simply heating the room if the pipe is out of reach. Patience is the tool here — a slow thaw is the safe thaw.
4. Never a naked flame. No blowtorch, no candle, no heat gun on full. Fierce heat against joists and insulation is a fire risk, and it damages the pipe you are trying to save.

What if the pipe has already split?

Then you are no longer thawing — you are damage-limiting. Keep the stopcock closed, open the cold taps to drain the pipework, and if water has reached sockets or fittings, cut the power at the consumer unit only if you can get there dry. Do not warm the pipe any further, and do not be tempted to turn the water back on to check: a split that weeps at low pressure sprays at mains pressure. Leave the supply off, note where the water appeared, and switch to the burst pipes drill — the five steps there take over from here.