Bathroom extractor venting options...

Joined
30 Jun 2017
Messages
217
Reaction score
11
Country
United Kingdom
Hi everyone, just weighing up my options for positioning the extractor in my bathroom.

The bathroom is located at a hip end roof.

Ideally I wanted to send it though the wall but it would be really close to the eaves which I understand isn't ideal due to moisture potentially getting back into the loft space.

I could put it lower down the wall but I'm pretty sure it wouldn't be optimal and also look stupid around torso height.

My other option would be sending it through the roof, again a potential issue would be leakage into the loftspace.

I'm really just looking for some advice/ideas.

KXfrw3c.jpg


Any feedback is much appreciated.
 
Sponsored Links
through the wall would be OK. Use a cowl vent which will direct the steamy air down and out. It will drift up but mixed with the outdoor air.

If you go through the ceiling, use an inline ducted fan, placed in the loft, which can be three times as powerful, and quieter. You can lead the duct out through the eaves well away from the window. Route it to blow the steamy air away. Rigid duct will also allow condensation to drip outside.

Don't vent through the roof unless you are a roofer. Holes in roofs tend to leak.
 
Hi everyone, just weighing up my options for positioning the extractor in my bathroom.
The best position for the internal vent would be where you indicated,directly above the shower via a ceiling vent,some flexi,inline fan,more flexi and a roof vent.That position will remove steam very well,dont know the size of your bathroom and if a wc is also being fitted but an additional ceiling vent (tee in loft space) is possible to increase extraction and remove steam & stinks.

I would always get a roof vent fitted,its worth the expense.

There is this rafter vent termination available http://www.lapvent.co.uk/ but being old fashioned i fit what i know will work.

Good luck with your project.
 
There is this rafter vent termination available http://www.lapvent.co.uk/ but being old fashioned i fit what i know will work.

Thanks for the feedback guys much appreciated.

I get the impression that the linked vent is just for general ventilation not mechanical, I was thinking this was maybe a good option https://www.aboutroofing.com/mantho...-tile-vent-red-grey-terracotta-red-brown.html with any luck ill just be able to take out a single tile and slip a connecting flexi pipe inbetween where the roof underlay laps over itself.
 
Sponsored Links
There are various roof ventilators available,i would get a local roofing company to fit an external vent that matches your roof tiles/slates with a 100mm internal spigot.

Remember the roof vent has to be able to shift the maximum air flow output from your fan,for example this fan
Manrose MF100T 100mm In-Line Mixed Flow Extractor Fan with Timer
maximum airflow is 245 m/3 per hour.
 
There is a version for mechanical extraction:
http://www.lapvent.co.uk/mechanical_extraction.html

I have fitted one and it works as advertised.

Talking from no experience here but surely sending the warm air directly into the back of a cold tile using the above vent wouldn't be ideal? Unless in missing something.

The tile vent I linked above says it has 8000mm²/m of air flow with the mechanical fixing adapter and Flexi pipe attached, the manrose can shift 245m3/h of air. Does anyone know if this would be sufficient I have no idea how to figure out the conversion.

My other option at this point would be a lead slate with 4" waste pipe and cowl on top.
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top