Repairs and problems

Condensation dripping from a toilet cistern

Where jobs go wrong

Better ventilation and, in some cases, an insulated or concealed cistern arrangement reduce it.

The short answer

Cold incoming water chills the ceramic, warm humid air condenses on it, and the resulting drips look exactly like a leak.

How this is diagnosed

The tell is that the drips appear in humid conditions and stop in dry weather, regardless of flushing.

Better ventilation and, in some cases, an insulated or concealed cistern arrangement reduce it.

Questions we get asked

Is it harmful?

Persistent drips onto a timber floor cause damage over time, so it is worth resolving.

Can insulation be added?

Some cisterns can be lined, though improving room ventilation is usually the more effective step.

Working out what is realistic in your space?

Room dimensions, the position of the window and where the waste leaves the building decide most of it. Send those and we can be specific.