How To Fix A Leaking Radiator Valve
Radiator valves, like taps, can wear over time, become faulty and leak, dripping water onto your floor. This is a DIY repair you can do in under an hour. Watch, learn, then fix that pesky radiator valve yourself.
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Step 1:
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You Will Need
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Step 2:
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Find The Source of the Leak
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Water leaking from a radiator valve might be seeping from around the valve spindle. However, when the water runs round and drips from the valve's cap-nut, it's the nut that often appears to be the source of the leak. Dry the valve then hold a fresh piece of paper tissue against the various bits to work out exactly where the moisture is coming from.
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Step 3:
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Tighten the Gland Nut
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To stop a leak from a radiator-valve spindle, tighten the gland nut with a spanner. If the leak persists, undo the nut and wind a few turns of PTFE tape down into the spindle.
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Step 4:
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Tighten the Cap Nut
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If the cap-nut is leaking, tighten it gently with a spanner. In most cases this will stop the leak. However, if the leak persists, you will need to replace the valve. See "How To Replace A Damaged Radiator Valve" for advice on how to do this.
But if you are still not quite sure, why not ask a professional to do it for you.