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

sujsuj

I noticed huge condensation on one of the bathrooms (used by my teenager!). Water actually not just makes wall wet it actually comes as drops near windows and walls. I did all basic checks listed below, all looking good ..

1. Checked fan, which works fine makes noise when bath light is on and goes off 2-3 minutes after switching off light
2. Checked fan while steamy inside and noticed visible hot air exit from fan 
3. Checked ducting and seems to be intact, now planned to use tape to ensure duct end covers well with light end

What I could not check are..
1. If fan end is dirty and stop exit or steam (as no access), but from distance I can see hot air exiting
2. Couldn't check for any holes  in duct from light end to fan end?

Other doubt I have is about the bathroom paint, its not seems to absorb any water..Is that expected..? Paint seems to be peeling off due to condensation in the bathroom. Not sure if previous owner used wrong paint..?

See some photos..
My other bath is similar aged and similar construction no problem at all. everything is this toilet may be 10 year old.

Any suggestions..? tips..? Thanks

Robin9

Is the window open ?

Norman_Castle

Hopefully the fan is normally fitted to the ceiling and not hanging down as pictured. 2-3 minutes over run isn't long enough, is there any adjustment on the fan? If so try 10-15 minutes. The peeling paint could be from poor preparation such as not cleaning the walls before painting or from using standard emulsion. Its now failing due to the excess condensation.

How long is the teenager showering for? Longer showers create more condensation.

"Other doubt I have is about the bathroom paint, its not seems to absorb any water.."

What?

Maskface

I had condensation and peeling paint in my bathroom caused when the previous tenant painted the walls with a silk finish which attracted the moisture. As soon as I painted over it with Matt emulsion the moisture stopped clinging to the walls. 

tacpot12

You need a fan that switches on automatically when the bathroom is humid, and off when it is dry enough - a humidity-controlled fan. 

Emmia

2-3 minutes won't be enough to clear the steam, I'd also get a new fan with humidstat, with as high an extraction rate as possible

grumbler

For a teenager you need a huge inline fan, not this joke.

Other solutions - better insulation and better heating of  your bathroom.

sujsuj

Robin9 said:

Is the window open ?

Window is facing road, so never opens. My second bathroom also have exact items but condensation is not a problem there.

Bendy_House

Hi SS.

I think the solution has been outlined by others - you need a FAR more effective fan running in that bathroom, and for a LOT longer.

The part dangling from the ceiling - is that just a light, or does it also contain the fan? Especially if the latter, I bet that's an asthmatic model at best, with a pitiful little fan that wouldn't blow out a candle. Are there other lights in the bathroom (please say 'yes')? If so, dedicate that unit to being purely an extractor - lose the light fitting that is just restricting the inlet.

Got access to the loft above? Cool - consider an in-line fan as these can often be more powerful. Choose a beast. Fit one that causes panic in toupee-wearers. Seriously consider going 5", and have just a grill in the ceiling. Yes, the outlet vent will likely be 4", but - if you cannot replace that too - just reduce it down to that size as close to the outlet as possible. Check the ducting - is it fully open? No sharp bends? Not partially collapsed?

And have it on a timer. Or humidistat. Or both.

Silk emulsion is usually more resistant to moisture, so the fact that 'silk' is peeling speaks of the sheer volume of 'wet' in that room. 'Matt' isn't going to sort that problem - only extracting the condensation will do that. You might, tho', want to consider 'proper' bathrooms paints, as i suspect they are more resilient?

sujsuj

Norman_Castle said:

Hopefully the fan is normally fitted to the ceiling and not hanging down as pictured. 2-3 minutes over run isn't long enough, is there any adjustment on the fan? If so try 10-15 minutes. The peeling paint could be from poor preparation such as not cleaning the walls before painting or from using standard emulsion. Its now failing due to the excess condensation.

How long is the teenager showering for? Longer showers create more condensation.

"Other doubt I have is about the bathroom paint, its not seems to absorb any water.."

What?

Its a shower light extractor fan kit..I removed it to seal duct around the light firmly with tape fearing thats what causing this issue..I will it back after that. Extractor fan switches off 5 min after light off. need to see how can I adjust this. 
I checked loft and its kit with fan in the middle duct to both ends, one end of duct to bath/shower around light other end to outside. see pic from loft.

Surely paint issue is due to condensation. Bubbles appears in the wall and paint peals off.

Emmia

I'd also crack open the window(can you open and lock it slightly open) it will really halp reduce the humidity and dampness, although I realise it's less than ideal with the road