Crag wrote:
Hiya,

I'd be grateful if someone could advise on how to rectify the condensation
problem I have.

I live in a 60s built semi house, with recently professionally installed
cavity wall & loft installation and 10 year old double glazing. I have
always had a really bad problem with condensation in the autumn/winter
months and this year is no different - it literally drips down the windows
(upstairs only mind) and pools on the window sills once the heating has
been on. Surely this shouldn't be the case even if there is a big
difference in temperature between outdoors and indoors?

Looking at neighbouring properties nobody seems to have the same problem
(or at least not to the same extent) as I do.

I had the same problem with a ground floor flat i bought in December
last year. the double glazed windows were relativly new, but the
condensation had been so bad that the wooden window ledge had mould on
it.
When i removed the window ledges i discovered a 10mm air gap below the
window direct to outside.

I used external silicone to seal the gaps and injected expanding foam
into the space once the new window ledges were fitted.

End on condensation problem.


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