Another condensation question - sorry

Senseicads

Can I ask a quick question Stuart? how loud is your ceiling fan? We get a lot of condensation in the bathroom and I think we need something similar. Also does the ceiling fan just vent into the attic space? Does that not just transfer the condensation problem up into the roof space? Sorry if my questions seem a bit ignorant. Never had to deal with this kind of thing before. thanks.

martinsurrey

Aylesbury_Duck wrote: »

Do you mean you're keeping the fan on for thirty minutes after finishing using the shower? That ought to be enough, combined with an open window. How long is the ducting and how powerful is the fan?

no it wont be... OP says they dont open the window

OP finishes showering, then puts their towel on the radiator, and there is still a fair amount of water in the tub, on the tiles, on the floor where the OP was standing while drying.

All that will not evaporate after 30mins.

That will take a few hours to evaporate, and when it does the moist air has no where to go, so hits the cold window and condenses.

Any wrote: »

The fan is just a timed one. No humistad. But as even after half an hour I am still getting condensation on my windows, it makes me think that it would be then on all the time!

it should be on for a few mins every hour (long enough to circulate a room full of air) until the room fully dries,

stuart07970 wrote: »

Your problem is the humidity
You think your window is the problem because without it open your extract fan does not have the grunt/guts to do the job.

I went from a ceiling mounted fan (85m cubed per hour) to a loft mounted axial fan (250m cubed per hour)

The difference is incredible - just make sure you use insulated ducting.

Have a look on isells website and you tube channel for info
Good luck

OP you need one of 2 things, a humistat so the fan can work long after you leave the room

Window vents, but they'll need to be pretty large ones, they'll add some constant air circulation.

Personally, I would go with both, that way you can have smaller vents.

stuart07970

Senseicads wrote: »

Can I ask a quick question Stuart? how loud is your ceiling fan? We get a lot of condensation in the bathroom and I think we need something similar. Also does the ceiling fan just vent into the attic space? Does that not just transfer the condensation problem up into the roof space? Sorry if my questions seem a bit ignorant. Never had to deal with this kind of thing before. thanks.

How loud?
In the bathroom you can hear the air movement, but you can’t hear the fan. In the hallway where the fan is mounted above in the loft there is a quiet hum.
Admittedly I went for a S&P silent fan at about £125, when I could have bought a Manrose with similar output for £50
But I only wanted to do the job once!

Any

Thanks all. My OH repaired the window and having that little opened while we shower has helped a lot. Vents arrived so will be installed at the weeken, weather permitting.

Fitting ceiling fan right above the shower would mean quite long duckting.
Also another hole in the house..

Any

martinsurrey wrote: »

no it wont be... OP says they dont open the window

OP finishes showering, then puts their towel on the radiator, and there is still a fair amount of water in the tub, on the tiles, on the floor where the OP was standing while drying.

All that will not evaporate after 30mins.

That will take a few hours to evaporate, and when it does the moist air has no where to go, so hits the cold window and condenses.



it should be on for a few mins every hour (long enough to circulate a room full of air) until the room fully dries,



OP you need one of 2 things, a humistat so the fan can work long after you leave the room

Window vents, but they'll need to be pretty large ones, they'll add some constant air circulation.

Personally, I would go with both, that way you can have smaller vents.

Thank you.
If I could find one that is more powefull then the one we already have would be bonus too...

PhilE

Open the windows during and an hour or so after the shower, with the fan on. Keep the door closed, so that moisture doesn't get into the house. Keep the bathroom heated as with the rest of the house.

Dry all wet clothes, towels outside of the house as much as possible.

Any

Right,my OH is going to install the trickle vent.

I ordered Ronseal anticondensation paint to use in the window alcove (the only place I get mould spots).

If I get new fan, with humidistat, how difficult would it be to install it in place of the old one? Manrose, in the wall.
Is it in a realm of DIYer?