Huge condensation in the bathroom, what to look..? Any tips..?

[Mr Chibs]

What about opening the window, once shower is finished?

 

[winston1]

Or even during the shower.

 

[Taylortwocities]

It can’t possibly be the boiler right ? It tripped when all of those appliances were disconnected someone on here said a possible leaky main heat exchanger

What about opening the window, once shower is finished?

Or even during the shower.

Seriously??? This is a teenage boy. They are incapable of following any instruction. Or will (sub-consciously) do the opposite.
Will not turn the light off either, or put in a new loo roll

Ooooh…don’t get me started…

 

[JohnW2]

What about opening the window, once shower is finished?

Or even during the shower.

.... 2... You mention a window. Does it open and, if so, have you tried opening it whilst someone is having a shower etc.?

Kind Regards, John

 

[Harry Bloomfield]

1. Checked fan, which works fine makes noise when bath light is on and goes off 2-3 minutes after switching off light

Problem 1 it should run for 20 minutes after the light is turned off, better would be one also triggered to run when the humidity is high.

My son takes 30 min shower during weekend, thats when we have most condensation.

That is problem2 Why such a long shower? A very thorough shower can be had easily in four minutes.

 

[JohnW2]

Problem 1 it should run for 20 minutes after the light is turned off, better would be one also triggered to run when the humidity is high.

Generally true, but if the condensation is arising during the OP's son's 30-minute showers (presumably with the light+fan on), I imagine it's probably far too late for any amount of fan 'run-on' to make any appreciable difference!

Kind Regards, John

 

[JohnW2]

That is problem2 Why such a long shower? A very thorough shower can be had easily in four minutes.

Indeed so, and one hopes that it's not an electric shower - since, today, 30 minutes of a 10.5 kW shower would probably cost around £1.60.

However, given my (fairly distant) past experiences of living with two teenage daughters, I somehow doubt that the OP's son is going to change his behaviour!

Kind Regards, John

 

[winston1]

Seriously??? This is a teenage boy. They are incapable of following any instruction. Or will (sub-consciously) do the opposite.
Will not turn the light off either, or put in a new loo roll

Ooooh…don’t get me started…

When I was a teenage boy I did what I was told or I got a whack. Only once though.

 

[Brett2021]

A couple of additional questions ...

1... Is the room kept fairly warm when used? The colder the walls /ceiling / windows etc., the more will moist water condense on it.

2... You mention a window. Does it open and, if so, have you tried opening it whilst someone is having a shower etc.?

Somewhat related to the second question above, flameport's point (3) is important. In my experience, complaints about bathroom extractor fans 'not working adequately' quite often relate to poor ventilation (inadequate opportunity for air to get into the room. If their is no vent/airbrick and/or a substantial gap under the door, it would probably be worth trying leaving the door slightly open when the room was being used (for shower etc.).

Kind Regards, John

1. Ye it is , other day after my teens long shower (its actually a shower in a large bath, not shower cubicle) it was like a steam room ..
2. Window opens to road, so not possible to keep it open

Thanks

 

[Brett2021]

The shower curtain has a chimney effect circulating the moisture around the room. Having either no curtain, or a door which seals either top or bottom with stop the air circulating around the room, so the moisture is retained within the cubical.

I had same problem with a shower in the bath, it circulates the moisture, but with the wet room with no curtain no problem, and in this house with cubical door sealing at bottom no problem.

Right, I thought longer shower curtain will keep stream inside the bath area where all sides are tiled. Are you saying it is better if I keep shower curtain bit lower so that larger gap at the top..? Is that going to reduce condensation ..? Thanks

Mine also is a shower in a large bath, Thanks

 

[Brett2021]

The duct in your photo seems to show a kink in the duct.
View attachment 271446
You need as straight as possible duct run. I would change duct to solid rather than expanding type. The internal ridges will slow air flow.
As @flameport days, that cheap weedy fan needs changing for something that works. Those toys are hopeless.
Here’s my recommendation

4"/100mm In line Duct Extractor Fan - Silent - 160m3/hr c/w Timer | Soler_&_Palau (5211322200)

I am going try to straighten the duct first. I checked duct, no cut anywhere. So planned to keep the same way if possible. Thanks

 

[Brett2021]

Years ago we were recommended to take showers instead of a bath to save water and energy. 30 minutes is outrageously unnecessary. You need to speak to your son.

these are weekend showers, usual weekday ones are 10 min max. BTW my weekend shower normally cross 40 min. So doubt I could challenge him on this

 

[Brett2021]

Ensure that there is a way that air can get into the bath room to replace the air that the fan has extracted. With out that the most powereful fan will be ineffective at removing the humid air.

The replacement air should be from inside the house. Air from outside could be cold enough to cause the humid air in the bathroom to condense to liquid on surfaces,

A gap under the bathroom door is one way to achieve this. Another way is a louvred panel in the door.

I doubt I could make this change..Max could do is keep door opened after shower. Thanks

 

[Brett2021]

Indeed so, and one hopes that it's not an electric shower - since, today, 30 minutes of a 10.5 kW shower would probably cost around £1.60.

However, given my (fairly distant) past experiences of living with two teenage daughters, I somehow doubt that the OP's son is going to change his behaviour!

Kind Regards, John

Its Aqualisa Quartz Smart high pressure shower with some controls in the loft . No, not expecting any change in shower time...

 

[Brett2021]

Si

What about opening the window, once shower is finished?

Thats definitely yes..