Extractor fan in bathroom causing mould in loft

fto

I seen lots with a flex hose on that just vents into the loft.

McKneff

Ours is on a vent hose, through the loft and out through the roof.

lizzyshep

fto wrote: »

I seen lots with a flex hose on that just vents into the loft.

Sorry, not quite sure I understand your post - do you mean this is a solution? Or that you have seen lots of shoddy work?

lizzyshep

McKneff wrote: »

Ours is on a vent hose, through the loft and out through the roof.

Thanks, who would I call to install this?

Dave_J_3

an electrician, plumber, handyman could sort this for you. Do you have roof eaves? You will need some 100mm diameter flex hose/duct (if your fan is 100mm) which connects to rear of your fan, keep run as short as possible, minimal bends, slight slope downwards, to your eaves and connect to an external grille
I cannot help with a roof vent as ive never installed one, plus I hate messing with tiles

lizzyshep

Dave_J wrote: »

an electrician, plumber, handyman could sort this for you. Do you have roof eaves? You will need some 100mm diameter flex hose/duct (if your fan is 100mm) which connects to rear of your fan, keep run as short as possible, minimal bends, slight slope downwards, to your eaves and connect to an external grille
I cannot help with a roof vent as ive never installed one, plus I hate messing with tiles

Yes, I believe there are eaves, so it sounds like a fairly simple solution. Although the insulation installer did recommend we get roof vents too. I've emailed the person who came round initially to assess our loft, to ask what he thinks.

spannerzone

I've installed a couple like this:



Although sometimes it's a squeeze getting it through to the outside depending on the woodwork at the eaves, you might want to fit a one way valve to stop wind blowing back in when the wind is blowing in that direction.

lizzyshep

That's a very helpful diagram, thank you :-) Can I ask what your trade is?

dampdaveski

Lizzy,
The electrician who changed your fan is an idiot.
He identified the fact that your bathroom fan needed replacing, he took the original one down and you would expect that as a competent electrician he would have noticed that there was no ducting from the existing fan to fit the new one to.

At this point he contacts you and puts you on notice of a problem he's found and that there is additional work to do (this is ignoring the fact that he should have looked in the loft when he assessed the job in the first place!)

Why didn't he contact you? either stupidity or the fact that fitting ducting into a roof space and fitting an eaves vent is a messy pain in the a#se job and he decided to keep quiet.
This is no grey area it is incompetence clear and simple (remembering you asked him to come round, relying on his professionalism to tell you what needed doing).

I'm not an electrician but I survey and specify this type of work daily for my electrical contractors

the drawing that spannerzone supplied is a good illustration, however if your eaves arn't big enough to fit a vent then you can get a tile vent fitted, subject to the type of roof tiles you have one of those could be fitted for under £50 (handyman rates)

Where possible try and avoid using flexiduct as it creates air resistance and will restrict the efficiency of the fan. The pipework should be something like Easipipe 100 or similar all available from Wickes, B&Q and unsurprisingly electrical wholesalers because guess what, this is something that sparkies do all the time!! (sorry for the soapbox! )
This error by the sparky is something I wouldn't expect from an apprentice

Just google 'easipipe 100' to get an idea, anything similar will do

Sorry for ranting, hope it helps
DD

southcoastrgi

i totally agree with the above