A pipe may appear sound while frozen and begin leaking only as temperatures rise. That makes the thaw, rather than the coldest hour, an important observation period. Windsor householders can prepare by knowing the stop tap location and checking accessible cold spaces without using flames, boiling water or risky access.
Check only places you can reach safely
As conditions warm, look at visible pipes in unheated or exposed places such as a garage, utility area or accessible loft route. Thames Water advises checking cold locations for drips as frozen pipes thaw. Do not walk on unsupported loft surfaces, remove fixed panels or climb outside to follow pipework.
Use a torch and observe joints, bends and nearby surfaces. A dry cloth passed along an accessible pipe can help reveal water, but keep clear of electrical equipment and do not handle pipework that is damaged, distorted or difficult to reach.
Record the change, not just the wet patch
Note the outside temperature trend, the time water first appeared and whether the supply or heating had just returned to normal. Take a wide photograph showing the room and a close image showing the drip point. Put a container beneath a minor accessible drip only if doing so creates no slip or electrical risk.
A wet surface below a pipe may show where water landed rather than where the pipe failed. Follow the visible route only from a safe standing position. Avoid describing a crack location as confirmed unless it can actually be seen.
Escalate quickly when the leak is active
If water continues to escape, Thames Water advises turning off the stop tap, leaving the water off and calling a plumber. Only isolate supplies you can reach safely. If water is near electrics, do not touch wet switches, sockets or appliances; keep away and obtain appropriate emergency help.
Even if the drip stops, keep the photographs and timings. Intermittent evidence after a freeze can help a professional decide what needs to be exposed or tested. Repair and insulation decisions should follow an assessment of the actual damaged section rather than a guess based on the nearest stain.
After repair, compare the same accessible places once the system is back in normal use. A dry check provides a useful endpoint to the record, while renewed moisture should be reported promptly rather than hidden by fresh insulation or stored items.
Further reading
Prepared with AI assistance using the sources listed above. General information cannot diagnose an individual property. Contact us to discuss your circumstances.
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