Thanks, John. The thing is, it's very difficult to access, it was difficult even just taking the photo, hence why I thought expanding sealing foam might be the best way to fill it. Is there a specific reason why I shouldn't use foam?
There is a hole at the back of one of the cupboards in my kitchen which goes all the way to the outside of the property. It's approximately 3 inches in diameter. I obviously don't want the inside of the cupboard exposed to the outside, and I can also feel it letting a cold draft in, so could...
Thanks again for the suggestions.
So to summarise, I need to replace the existing fans with whole brand new units? Is there definitely no replacement outer grille component available which would be compatible? Because it's going to be a fairly costly job, what with the cost of hiring an...
Thanks for the info. Is there not just anything which I can buy to fit on the outer side?
i.e. these:
http://www.ebay.co.uk/itm/COWLED-WALL-GRILLE-SHUTTER-EXTRACTOR-FAN-100mm-4-dia-/170283361778?pt=UK_Home_Garden_Hearing_Cooling_Air&hash=item27a5ade5f2...
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But I'd just have the same problem of cold drafts coming in with that, wouldn't I? Or does the external cover have some sort of incoming draft prevention?
I'm not sure actually. but I was wondering the same myself. We've only been here about 6 months, and I only noticed that there was no external cover when I went to take the photographs.
We have two bathrooms in our property, both of which have the same problem: There are extractor fans mounted in the windows, but they have absolutely no shuttering or cowling on the exterior side to prevent incoming draughts. So they basically act as a big hole in the window when not in use...