The overflow pipe high up on the outside wall keeps leaking at night. What is this and how can I stop it ?

janet, June 2009

Could be from an upstairs toilet cistern or could from be the cold water tank. Sounds as if you want a new cut-off valve in either. Usually a ball-cock system where you might get away with a new washer but often it is simpler to replace the whole valve with a new Fluidmaster type which are quiet and reliable.

Chicks Fan, June 2009