Windows are fogged and wall areas are damp in winter? How cold is it
there? Sounds like some sort of vapor barrier problems in you newly
renovated apts. Some of problem could be showering, etc. with no fan
and window slightly open -- causing condensation.

If you suspect it to be a heater problem, get a carbon monoxide
detector IMMEDIATELY.

In any case, the advice to get professional help is very good. Black
mold can be dangerous and it can be hard to remove. You may have some
liability so you should try to get it fixed as soon as you can.

Good luck.


Jerry wrote:
A tenant living in my apartment is complaining about rising wetness and
mould on walls.

I tell her to open some windows and let some air through. She claims they
are open always, but I live in the same block and have NEVER seen them open.

We are in winter and the bedroom windows are fogged up and wet from the
inside, with the windows closed.

Is this a heater with no air circulation problem or a deeper rising damp
problem.

No one else in the apartments has this problem and they are newly renovated
apartments with the requried floor ducts etc facing the outside.

Can anyone explain, thanks?