Installation of bathroom extractor fan from scratch?

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Just wondering a few things ...

* Is this a costly job?
* Is it a big job?
* What does it entail?

House is 1930s. Obviously the walls are already tiled & i've no idea of the condition of the walls behind this.

The bathroom itself is 207cm-x-167cm so quite small. Currently there is only a window & a door for airflow. The room itself gets pretty steamed up real quick. We have showers with the bathroom window open & then leave it open for a while afterwards. We have one of those Karcher window vacs which we use for the walls, which is about all we can do at the moment.

I've never had one of these things in a house before but my wife did at her parents & said they rattle like mad when it's windy outside (or at least hers did) - which is obviously not good :|
 
I would say unless you have a problem, then I wouldn't worry about it.

I absolutely detest fans in bathrooms, they're noisy, and on the whole, unless installed in perfect conditions, they do very little.

It's a fairly basic job, but it will involve drilling a 4 or 6" through the wall to outside (unless there's an easier way to route the ducting - the shorter the better)

He/you will then need to take a cable either from the lightswitch to the fan or from the existing light, to the fan - depends how you want it set up.

Do you have an air gap under the door currently? Because if not - you will need one for the fan to do anything, and secondly, it will help clear the steam you currently get if air can naturally flow
 
Do you have spare tiles?

Is there an old ventilation air-brick you could co-opt?

Could a fan go in the ceiling and vent through the roof or soffit?

Is the space above the bathroom accessible to allow ease of adding wiring from the light to a fan?

Chances are most of the cost will be in the physical installation of a fan, not in the cabling of it.

Decent back-draught shutters should avoid most rattling. Gertrude may disagree - we wait and see.
 
I've just had a Manrose fan installed as part of a bathroom refit. I wouldn't describe it as useless, but it is noisy, and the clattering from the shutters is really load. I'm wondering if I can fit an external shroud to reduce the effect of the wind, which worked on the kitchen extractor.
 
Decent inline fan in the loft if you can, going to a wall grille with cowl to stop wind blowing the flaps too much, or a normal fixed grille if you are venting out of the soffit.
 
Vent-Asia VAS100T 4.3/6.4W is a very quiet wall mounted one, if you do not have room for an in-line motor. You could also include an in-line back-draft shield.
 
Yeah there's an air gap under the door.

I doubt there would be room to access from above. I don't think the loft would allow anyone to get to that location .

I THINK their is an air brick located on the bathroom wall (outside). I'd need to go outside & check (it's raining & i'm being soft). But even if there is one, the whole lot is tiled so it's covered anyway (on the topic of which - previous owner left no spare tiles).

Ceiling will be that plaster & lath stuff. Ceiling has been papered.

We have to just paint the ceiling from time to time to get rid of what i imagine will be mould spots. It keeps it away for a while & then it comes back (immediately above the shower head really). So we just paint again & repeat the cycle.
 

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