Say the fan is on 30minutes a day. So what if it's extracted into the room or extracted outside?
As long as those are the 30 mins when steam is being produced during cooking then that is exactly what is needed.
Say the fan is on 30minutes a day. So what if it's extracted into the room or extracted outside?
Do that. When people ask here about dampness, the three questions are always "Do you have a kitchen extractor? Do you have a bathroom extractor? How do you dry clothes?". Fix those and if there is still a problem then investigate more.
I don't think you've proved that. Do you see evidence of penetrating damp coming through the walls? More likely, being a basement means that the walls are cold, resulting in condensation, and possibly that the outside air (which is exchanged via the trickle vents and other "leaks") is relatively cold and moist.
It makes no sense to spend time ducting a hood that's on 30minutes a day
I don't know what he does for washing and drying at the moment. Will be asking.
I think warming the wall first is the key priority don't you ?
There's no reason why trickle vents should ever be closed that I can think of.
I've never known anyone to open trickle vents. Or even fit them, in most cases.
You need to phone the manufacturers and insist they start making trickles without closers on them. Or just accept that they can be open or closed depending upon circumstances.Bad practice. I'm not going to compensate bad practice.
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