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Thanks for the reply - think I'll try the other suggestion of tweaking the settings first - may resort to this later if need be!

For some reason that link doesn't display - anyway it's one of the Classic Bathroom Extractor Fans 5" dia, from Fantronix.

Hi there, thanks for the replies. It came out of the box with these two controls built in - I selected option 4 when I bought it from these guys, seems they don't agree with you... http://www.fantronix.com/acatalog/5__Fans_for_Small_Bathrooms_12v_Zone_1___2.html Ah. Well that would...

Hi Andy, thanks for the reply. 40% is the lowest humidity setting so it's actually already set up like that. Does that mean you think it should work in the way I expected it to with that wiring...?

Hi all, can anyone tell me what I'm doing wrong here? :oops: I have a bathroom extractor with a humidistat and over-run timer (no pull cord). I would like the fan to come on when the humidity reaches 40% and switch off 10 mins after the humidity drops below this level - I've set the...

Hi, thanks for the reply. It's very near a door on a thin internal wall (bedroom to lounge) that wouldn't have had a chimney on it so instinctively doesn't seem like either of those things. I can't feel air flow in front of it. I might do a candle test - just thought of that, will get onto...

Hi, thanks very much for the replies - bit of a delay as I couldn't get online for long enough to post yesterday... Yes, that's exactly the sort of thing I meant - I'm worried about getting the seal right all the way around, including to the floor. It's a concrete floor - so assume that's...

Well folks, you've certainly left a gal a little confused :) I have to confess I was a little worried about using wall insulation after my first post; I'd done some more reading and it seemed to be quite risky (mould developing in or on the insulation, or the issue moving elsewhere). I'm...

Deluks - thanks, hadn't seen those before, space is a bit tight but should be able to afford 10mm. I'd only fit boards below worktop level though because there is no mould issue above and I don't want to re-surface the whole wall. Instinctively the boards seem like a good idea but have a couple...

Thanks all for your replies, very much appreciated. Woody - makes sense when you put it like that :) mointainwalker - cheers, that calculator looks really useful - I'm going to get myself a cheap hygrometer and keep an eye on the humidity levels in the flat. Will help me to decide if...

Nor had I. I just googled wall insulation. Do you have any views on using this type of product (of whatever brand) to solve the specific issue I described?

None at all. Hadn't even heard of these vents before my post, I just found through googling and wanted to give examples of what I was talking about. Should I be concerned about them?

Thanks woody. My reason for wondering about venting behind the units was that I saw another discussion where someone had black mould behind bedroom wardrobes. Some were suggesting that vents behind would help. If the issue is poor ventilation, why would a vent there not help the...

Hello, I'm fitting new kitchen units against two external walls that have suffered black mould - particularly behind the base corner unit where the walls meet. The underside of the wooden worktop is especially badly affected where it touches the wall. Would it help to - 1) Fit a vapour or...

Thanks flameport - there is one vent in the lounge, it's not on an external wall and it's about 25cm x 20cm. Is there an easy way to tell if it is actually doing any venting and is not blocked? Would it be a good idea to include a vent in the kitchen on an external wall - and do you mean just...

Thanks very much for the replies. @mointainwalker Re sufficient ventilation when putting the cupboards against wall: I can probably afford to set the Ikea units about 2cm away from the wall. Do you think that is still too risky in this case? You said "If you can prevent moist warm air...

Hello all, I've done some reading on this issue but would really appreciate your thoughts… I'm refitting the kitchen in my recently-bought 1940s council flat. One base corner unit smells very musty - it's at the point where two external walls meet. I ripped the cupboard back out (which is...