Bathroom extractor fan

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Manc chippy
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Bathroom extractor fan

Post by Manc chippy » Thu Feb 01, 2018 3:19 pm

Extractor fan in bathroom in the loft.
The only way to do it is to bring a rigid flat pipe such as this one -
https://www.screwfix.com/p/manrose-rect ... 10mm/14118
DOWN between the rafters amd then out through the wall of the house. (I can't bring it any other way in a terraced property with very odd style roof tiles that must be messed with - in a conservation area).
Is this ok? What problems do I need to be wary of if I do this?
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wine~o
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Re: Bathroom extractor fan

Post by wine~o » Thu Feb 01, 2018 5:16 pm

any pics of the outside of the house (particularly roofline/eaves) ? might help with suggestions ??
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ayjay
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Re: Bathroom extractor fan

Post by ayjay » Thu Feb 01, 2018 6:20 pm

Manc chippy wrote: What problems do I need to be wary of if I do this?
You should probably try to ensure that the rectangular trunking has at least the same cross sectional area dimension as the circular outlet of the fan.
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Manc chippy
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Re: Bathroom extractor fan

Post by Manc chippy » Thu Feb 01, 2018 10:12 pm

wine~o wrote:any pics of the outside of the house (particularly roofline/eaves) ? might help with suggestions ??
The wall of the house comes up higher then the floor of the loft. I can't but it through the roof or the party wall. The only place I can bring the pipe from the fan is between the rafters of the roof down to the wall of the house and then out.
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Re: Bathroom extractor fan

Post by DIY_Johnny » Sat Feb 03, 2018 10:20 am

I just a diyer so feel free to ignore but I can't see any issues. The fan is just blowing out moist air through a duct so pretty unrestricted. It would want to be a p*ss weak fan not to be able to do that. It is heading down wards too so any possible condensation would drip to the outside.
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