On 05/11/2012 08:23, polygonum wrote:
On 05/11/2012 08:10, harry wrote:
On Nov 4, 12:17 pm, stuart noble wrote:


Where do you get the idea that indoor RH is normally higher than
outdoor? Do you live in a cave?

Showers kitchen and bath rooms of course. When the warm damp air
encounters a cold surface, it condenses.

"Normally" seem to imply an ongoing, more-or-less permanent state of
affairs. Our kitchen and bathroom might transiently have RH towards the
high end - but very rapidly reduce - we do have opening windows! Hence
ours are not running in condensation, are not coated in black mould, etc.


Well exactly. What's so complicated about that?
You get rid of condensation either by ventilation or by raising the air
temperature so that it can carry more moisture (i.e. it dries) or, shock
horror, a combination of both. Yes it hurts to have the windows open and
the boiler on but it's not for long.