On Tue, 2 Dec 2003 22:25:02 -0500, "j j" wrote:

where does humidity come from?

we're renovating an upstairs appartment. the appartment downstairs is
occupied, the one upstairs is not.

on some windows upstairs I see condensation. where does this moisture come
from?
can the humidity come through the ceiling (lathe and plaster) of the bottom
appartment?

Yes it can.

And thru the walls and ceiling and also from the breathing and body
of any visitors to the site, and from all the drains, etc. .

However, knowing that doesn't mean that you don't spend some time
checking for things like leaks from rains.


PJ

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