Shower extractor fan

[MartinB85]

Hi everyone,

We've recently noticed some condensation patches on the edge of our ceiling. We've had damp proof treatment and a membrane put on the wall, and we assume the condensation is coming due to the blown rendering outside which is due to be fixed when we have it removed external insulation added and then rendered again.

I decided to check our shower fan/pipe out as this is above the bathroom but directly next to the wall where the condensation is appearing in the bedroom. The pipe goes up above the shower ties into the loft rafter and then down to fascias... it actually just sits above the fascias it isn't plugged into any sort of vent or opening. The pipe was full of water in places where it was laid flat and when i looked inside the pipe it was black, and I mean mold covering everything inside the pipe.

A couple of questions

Should the pipe be put into some sort of vent rather than just dropped over the external wall into the fascia/guttering space?

Is it worth just getting extractor fan put into the wall (seeing that pipe has put me off using it) and the pipe itself seems far too long for the distance it has to reach?

Any ideas on how much it would cost to install an extractor fan? Including having to make the opening and install the electrics for it?

Thanks!

 

[Wayners]

I put the pan connector (toilet fitting) as perfect fit on a 100mm fan. Then a bend to a smooth 110mm solid soil pipe running down hill (4m in my case) then a bit of concertina pipe connected to a vented hole in the soffit.
Concertina pipe is good as will stop water running but too much in the wrong place can hold water and get mouldy.

There are solid pipes made for the job or use soil pipe like did as a much better job for your fan

 

[Bullet-Proof_Biscuit]

Absolutely the vent should be to outside.
The pipe needs to be insulated to prevent the moisture condensing before it reaches the outlet.