Plumbing 5 October 2026

Frozen Pipes in Crowborough: Why the Highest Town in the High Weald Freezes First

Frozen pipes reach Crowborough before they reach anywhere else we cover. The town’s highest point is 242 metres above sea level, which makes it the highest town in the High Weald, and a hard frost that barely settles in the Medway valley around Tonbridge will have been sitting on the Crowborough ridge all night. When we are called out on the first properly cold mornings of the year, the Crowborough jobs are usually the first ones on the list.

This guide covers which pipes freeze first in the town’s housing, how to thaw them without making things worse, and what to do if water is already coming through. If you are standing in a wet hallway right now, skip to the section on bursts and call us on 01732 792 454.

Why Crowborough is more exposed than the towns around it

Crowborough sits on the edge of Ashdown Forest, on the ridge between the Kent and Sussex Weald, and most of it is built on high ground. Air is colder at height and a hilltop town has less shelter from the wind, so the frost arrives earlier in the evening, bites harder overnight and lingers longer into the morning than it does down in Tonbridge or Paddock Wood. A pipe that would survive a cold night in the valley can be solid by dawn on the ridge.

The housing adds to the risk. Crowborough grew as a Victorian health resort after the railway arrived in 1868, so there are plenty of late-Victorian and Edwardian villas with loft tanks, long pipe runs through unheated roof spaces and solid walls that pass the cold straight to any pipe clipped against them. The twentieth-century estates that took the town past twenty thousand people have their own weak spots: outside taps on exposed walls, pipes through integral garages, and boiler condensate pipes run outside to a drain. We are based in Tonbridge and cover Crowborough from there, and we see the same handful of freeze points on nearly every winter visit.

Which pipes freeze first

Water freezes where it is still and cold, so the risk is highest in the parts of the house that are neither heated nor flowing:

• Loft pipework and the cold water storage tank. In the older villas the loft is the coldest space in the house, and the tank, the ball valve and the pipes feeding the bathroom all sit up there. A frozen ball valve is a classic: no water to the bathroom cold taps, but the kitchen tap still runs because it comes off the mains.
• Outside taps. A garden tap that has not been isolated and drained for the winter will freeze at the first hard frost. The ice usually forms in the short run of pipe just inside or behind the wall rather than in the tap itself, which is why the damage only shows up when it thaws.
• Garages, outbuildings and extensions. A pipe to a utility room, a downstairs toilet in a converted garage, or a feed to an annexe is often run through an unheated space on the way.
• Boiler condensate pipes. A condensing boiler drains a trickle of acidic water through a plastic pipe, and if that pipe runs outside on a north-facing wall, it freezes and the boiler locks out. This is the most common reason our phones ring on a frosty Crowborough morning, and it is a boiler that is fine rather than one that is broken. Our guide to a boiler that will not fire up covers the lockout side.
• Pipes on external walls behind kitchen units. Out of sight, uninsulated, and against a cold wall.

How do I know if my pipes are frozen?

The signs are usually clear. One tap or one part of the house has no water while the rest is fine. The boiler shows a fault on a morning when it worked perfectly the night before. You can sometimes see frost or a bulge on an exposed section of pipe.

The question that matters more is whether the pipe has split. Water expands as it freezes, and a frozen pipe is often also a burst pipe that has not started leaking yet because the ice is plugging the hole. That is why the first thing to do is not to grab a hairdryer but to find the stopcock.

How to unfreeze frozen pipes safely

1. Find and check the stopcock. It is usually under the kitchen sink or where the mains enters the house. Make sure it turns. If you cannot find it or it is seized, that is worth sorting before winter rather than during it.
2. Open the tap nearest the frozen section. This gives the melting water somewhere to go and relieves pressure as the ice shifts.
3. Warm the pipe gently, working back from the tap towards the frozen part. A hot water bottle, towels soaked in warm water, or a hairdryer on a low setting held well back all work. Never use a blowtorch, a heat gun or any naked flame, and never pour boiling water onto a pipe. Plastic pipe and old soldered joints do not take kindly to sudden heat.
4. Watch the pipe as it thaws. If you see water weeping from a joint or a split, close the stopcock straight away and call a plumber.
5. For a frozen condensate pipe, pour warm, not boiling, water over the outside section, or hold a hot water bottle against it, then reset the boiler once the pipe has cleared. If it will not reset, or you are not comfortable touching the boiler, leave it to a Gas Safe registered engineer.

If the frozen section is under a floor or inside a wall, do not go hunting for it with heat. Turn the heating up, open the loft hatch to let warm air rise, and let the house do the work. If nothing has changed after a few hours, call us.

What to do if a pipe has burst

A burst pipe in Crowborough on a January morning is a genuine emergency, and the first five minutes decide how bad the damage is:

• Turn off the stopcock. Then open the cold taps to drain the pipes.
• Turn off the boiler or immersion heater. With no water coming in, the hot water system should not be left heating.
• If water is coming through a ceiling, turn off the electrics at the consumer unit if you can reach it safely and move anything you can out from under it. Our guide to water leaking through the ceiling covers the first ten minutes in detail.
• Call us on 01732 792 454. We run a 24-hour emergency plumbing service and come out to Crowborough from our Tonbridge base. The first hour is £95+VAT and always billable, then £47.50+VAT for each 30 minutes after, and we tell you what the repair involves before we start it.

Take photos of the damage before you clear up; a dated record helps if you claim on your insurance.

How to avoid frozen pipes next winter

Nearly every frozen pipe we deal with in Crowborough was preventable, and the fixes are cheap compared with a ceiling down:

• Lag every pipe in the loft, the garage and any outbuilding, and the tank too. Do not insulate underneath the tank; it needs a little warmth from the rooms below.
• Isolate and drain outside taps in autumn. Most have an isolation valve just inside the wall. Close it, open the outside tap to drain it and leave it open through the winter. If there is no isolation valve, we can fit one.
• Have the condensate pipe sorted properly. A Gas Safe registered engineer can shorten the outside run, increase the pipe size, lag it with waterproof insulation or re-route it to an internal drain. This is a quick job in autumn and a cold house in January.
• Keep the heating ticking over if you go away. A low constant setting costs little and keeps the pipework above freezing. Leave the loft hatch open in a severe cold snap.
• Get the boiler serviced before the frosts arrive. A boiler service is £95+VAT and includes a check of the condensate route, so the lockout never happens in the first place.

Talk to us before the first frost

If you have had a frozen pipe in Crowborough before, you will have one again unless the cause is fixed. We cover the town and the Kent and Sussex border from Tonbridge for plumbing and heating work, and our Crowborough page explains what we do locally. Call 01732 792 454 to book a visit before winter, or straight away if the water is already on the floor.