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.

--
Rod