"Harry Bloomfield" wrote in message
...
Marky P expressed precisely :
My flat suffers from a very minor case of damp. I get severe
condensation on all windows (double glazed) and there's a slight
claminess to the walls and bedding. Also, powdered products (ie:
salt, sugar etc) in the kitchen cupboards go hard after a while. I've
noticed the problem seems worse at this time of year.

Damp (high humidity) is caused either by cold walls (poor insulation),
poor ventilation, or a combination of the two.


It can also be caused by water ingress or pinprick holes/leaks in buried
pipes. But in this case I suspect poor ventilation.