When you use toilet during day time, you switch on light too? If not, if do big business during day time, the toilet will smell also right?  Can install with 2 different type of switch i.e. follow toilet light switch and also have a separate switch for day time use?

Possible the ventilation fan suck the manhole / drain opening air our / from wash basin. This is only possible if there no U trap beneath it.

Or

Your windows close to the sewage breather pipe. Usually is locate at the roof, but some maybe just outside 2nd floor.

Nop la , when u turn on the toilet light , the exhaust fan will follow turning on , so when u taking bath the haze will be suck out , and i tell u , u will enjoy singing while taking bath    Because u won't feel hot  highly recommend to install exhaust fan inside toilet
Tell u ,  i install exhaust fan in my kitchen even i already have the hoods 
If ur toilet stil naked (mean havent renovate anything) , and ur budget allow , go for modern exhaust fan design if u like modern , i have 4 toilet + 1 kitchen , if buy RM188 x 5 = RM940 and installation blah blah RM1k++ already , this exhaust fan i just spend less than RM500 include install 
Toilet tiles , plaster ceiling is provided when i bought this new house    I save quite alot , but the problem is i can't do any hacking because i don have same tiles design   

No improvement after shutting windows.

I will check out those areas you mentioned. Hopefully can solve it soon, thanks a lot

When you switch it on, did you open the windows?

When you use toilet during day time, you switch on light too? If not, if do big business during day time, the toilet will smell also right?  Can install with 2 different type of switch i.e. follow toilet light switch and also have a separate switch for day time use?

The exhaust fan just suck the smelly air away from bathroom. It will dry up when the sun heat up the ceiling tiles. No need duct. But its different with cooker hood bcoz the air contain oil & fat.

I didn't open the window , just exhaust fan
ya i on my light too, personally i love to switch on the light to make toilet more bright , actually day time from 8.30-6pm also at office , very less use the toilet at day time except friday only (terengganu friday off day)  , i using LED downlight very save energy no worry 
brother , it will dry up if the sun heat up , but how about raining day?? Who gonna help u heat up the ceiling ?

For my house, I have two bath rooms at 2nd floor, I don't see the need of exhaust fan because the windows is always open, at least 30% opening. Yes some mist will build up after long hot bath, it will just go away after few mins will gone.

All my room have exhaust ventilation fan, it help suck in fresh air at night during rainy day, making my room much nicer to sleep. For ventilation to the roof, roof itself have many opening and airflow will clear up moisture.

You don't on your aircond to sleep?

Rainy day nope. Only switch on AC f its hot day.

glass mount exhaust fan, very common nowadays:

Wow.. Very nice the glass mount type. Any Sifu to recommend for installation? I'm stay in KL. :-)

hi all,

i have a exhaust fan mounted on my toilet window just like the above. However, my toilet still feels very "wet" and already have mold on my plaster ceiling although I just move in 8 months ago.

Contractor previously told me my condo is quite old (14 years) and has house sweat. Whatever bullcrap that is. I even have molds on my PVC in the masterbedroom and shirts which I havent worn for a long time. How do I get rid of molds?

hi all,

i have a exhaust fan mounted on my toilet window just like the above. However, my toilet still feels very "wet" and already have mold on my plaster ceiling although I just move in 8 months ago.

Contractor previously told me my condo is quite old (14 years) and has house sweat. Whatever bullcrap that is. I even have molds on my PVC in the masterbedroom and shirts which I havent worn for a long time. How do I get rid of molds?

hi all,

i have a exhaust fan mounted on my toilet window just like the above. However, my toilet still feels very "wet" and already have mold on my plaster ceiling although I just move in 8 months ago.

Contractor previously told me my condo is quite old (14 years) and has house sweat. Whatever bullcrap that is. I even have molds on my PVC in the masterbedroom and shirts which I havent worn for a long time. How do I get rid of molds?

hi all,

i have a exhaust fan mounted on my toilet window just like the above. However, my toilet still feels very "wet" and already have mold on my plaster ceiling although I just move in 8 months ago.

Contractor previously told me my condo is quite old (14 years) and has house sweat. Whatever bullcrap that is. I even have molds on my PVC in the masterbedroom and shirts which I havent worn for a long time. How do I get rid of molds?

From what you described, I would say that's unhealthy. Which floor are you on? Can you open windows or sliding door if it has a balcony to air it?

To remove excess humidity, dehumudify either with AC (in dry mode) or with a dedicated dehumidifier from brands like Firenzi, Delonghi or Stadler Form's Albert. For window use, if you can get a higher CFM one like 8" instead of 6" that might help.

Although not practiced in a home, those blue lamp thingy that is seen in McD or KFC near the washing area might help if placed in the bathroom above say the mirror. That will help kill mould spores.

Used Aircon would help the temperature more dry.

In toilet just install exhaust fan at ceiling or face to window.
Inside wardrobe can buy Hippo for suck up water

Your exhaust fan need to run continue another 15-20min after you  comeout. A short period doesn't help. Reduce the flashing bath water or wet area by instal the screen or separate the bath area.

For wardrop, get the hippo or from daiso that absorb moisture.  It need to replace after full absorp. Or a electrical heat dryer which I not sure where can get anymore. I m using this.

For room, just aircon is enough.

Cloud be small leak on the floor above. I doubt toilet humid can build mold with exhaust fan running. My bath room don't have exhaust fan, but window are 30% open all the time. So far OK no mold for 3+ year now.

Thanks, I will look into the machines, but they're not cheap as well
Already have exhaust fan. Will try hippo.
Not sure if it is leak because the mold is quite evenly spread across the plaster ceiling. My toilet window is only about 3ft (h) x 1.5ft (w).
Plasma or ionizer doesnt help right? It says prevent mold from forming. Not sure.

Mine is only 2x2