Hi, There is a build up of condensation on the walls around all of the double glazed windows which were fitted before we purchased the property. It is so bad that there is clear evidence of water and if not wiped weekly a build up of black residue along the walls and the edge of the window casings; top, bottom and sides.
What can I do?

Dee, February 2009

you have a condensation problem due to poor air circulation you need to ventilate the room and then kill off the mold with neet bleach. check around the outside of the frame to ensure it is fully sealed against the masonary

kiwi, May 2009