Bathroom extractor fan

16
Posted 28th Oct
morning

anyone have experience of fitting one of these?.

screwfix.com/p/m…379

Iv bought the kit but someone suggest I change the pipe work to solid tubing?.

cheers

John
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16 Comments
Never fitted one, but can't see the point in a solid pipe (that you'd have to cut to exactly the right lengths etc.)
Have similar one from manrose, cannot see the reason to change the pipework for solid one.
esar28/10/2019 09:27

Never fitted one, but can't see the point in a solid pipe (that you'd have …Never fitted one, but can't see the point in a solid pipe (that you'd have to cut to exactly the right lengths etc.)


The idea behind it is that the concertina pipe can collect water droplets in between the folds and eventually wear the pipe away. With a solid pipe and lagging this is reduced.
I have a similar one. Never had any problems with it. When fixing fan somewhere make sure it's very tightly screwed in and concider something to reduce vibrations / noise, otherwise if it's installed in a loft vibrations can run along the wooden beams and be quite noisy which I found out and had to go back up and modify my installation.
brailer28/10/2019 10:10

The idea behind it is that the concertina pipe can collect water droplets …The idea behind it is that the concertina pipe can collect water droplets in between the folds and eventually wear the pipe away. With a solid pipe and lagging this is reduced.


Sorry, but unless I see proof, water does not affect plastic, somebody's been telling you Porky's
Corrugated pipe increases the drag and reduces the efficiency. Smooth wall pipe is better from that point of view, but is it worth it in your install?
Should I replace piping with insulated version as it's going in the attic?
Standard flex duct can work fine. Try to slope the duct down towards the ends and avoid saga though. It will get condensation which can exacerbate the sagging. Badly installed ducting can gradually accumulate moisture until it blocks the duct.
I have ordered some of the aluminium insulated ducting to help with condensation.
brailer28/10/2019 20:54

I have ordered some of the aluminium insulated ducting to help with …I have ordered some of the aluminium insulated ducting to help with condensation.


Good choice. install the fan at a high point - run the inlet hose "up" to the fan and then slope the outlet away "down" from the fan. Any water in the fan can find it's way into the electrics and damage the fan.
Is there anything else anyone would do please. What about mesh over the external grill to keep out bugs or will that hinder the air flow. Would u wall mount of add to rafters.
brailer28/10/2019 22:09

Is there anything else anyone would do please. What about mesh over the …Is there anything else anyone would do please. What about mesh over the external grill to keep out bugs or will that hinder the air flow. Would u wall mount of add to rafters.


I have my fan attached to a rafter - using rubber washers to minimise vibration to avoid noise transmission. Probably over the top but the fan runs very quietly. I just used a standard exit grill but used something like this for the inlet in the bathroom - ebay.co.uk/itm…982 as I think it looks better and is less of a dust trap than a standard grill.
Van197328/10/2019 22:45

I have my fan attached to a rafter - using rubber washers to minimise …I have my fan attached to a rafter - using rubber washers to minimise vibration to avoid noise transmission. Probably over the top but the fan runs very quietly. I just used a standard exit grill but used something like this for the inlet in the bathroom - https://www.ebay.co.uk/itm/Round-Ceiling-Vent-Diffuser-Extract-Grille-Valve-With-Retaining-Ring-100-mm-New/233307603400?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D20131231084308%26meid%3Dddf4b874d969405286488ad38a1038e3%26pid%3D100752%26rk%3D3%26rkt%3D5%26sd%3D173984302283%26itm%3D233307603400%26pmt%3D0%26noa%3D1%26pg%3D2047675&_trksid=p2047675.c100752.m1982 as I think it looks better and is less of a dust trap than a standard grill.


Thanks for all the help
Thank you to all
Van197328/10/2019 22:45

I have my fan attached to a rafter - using rubber washers to minimise …I have my fan attached to a rafter - using rubber washers to minimise vibration to avoid noise transmission. Probably over the top but the fan runs very quietly. I just used a standard exit grill but used something like this for the inlet in the bathroom - https://www.ebay.co.uk/itm/Round-Ceiling-Vent-Diffuser-Extract-Grille-Valve-With-Retaining-Ring-100-mm-New/233307603400?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D1%26asc%3D20131231084308%26meid%3Dddf4b874d969405286488ad38a1038e3%26pid%3D100752%26rk%3D3%26rkt%3D5%26sd%3D173984302283%26itm%3D233307603400%26pmt%3D0%26noa%3D1%26pg%3D2047675&_trksid=p2047675.c100752.m1982 as I think it looks better and is less of a dust trap than a standard grill.


Where and what style of rubber washers did u get please.
brailer30/10/2019 07:27

Where and what style of rubber washers did u get please.


I'm a bit of a hoarder so tend to have stuff like this in my garage. Anything would do as long as it has some flex in it - a piece of old underlay would provide some vibration deadening.

If you have nothing suitable lying around I would just use something like this - ebay.co.uk/itm…9FQ If the fan has 4 fixing feet I'd use 2 washers per foot, if just 2 then perhaps 5 per foot!

As I said it might be overkill but I would do it again as "every little helps".
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