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chris French wrote:
In message . com,
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klkbloke wrote:

Partially blocking these vents is not a good idea.

We had a similar arrangement in our old house, the internal airbrick was
covered over in the renovations, never caused a problem.

sometimes it does, sometimes it doesnt, doesnt make it a good idea.


small bathroom fans are really hopeless anyway, and not even worth
switching on at bathtime.

not my experience at all. Had a 100mm inline van in the loft, venting
the bathroom through the roof. operated by a humidistat. It worked very
well, much better than the previous arrangement - a window. Never any
problems with damp, mould etc.

I wonder why. My 6 inch one was useless.

You need to let air in. A gap under the bathroom door is one way. I remember
one regular poster a few years ago mentioning the plasterboard on a stud
wall being pulled down due to a lack of air entering a room and the fan
creating a vacuum.

Adam