Doubt it do any help. What is on the top? Your plaster ceiling installed new?

Your house humidity is very high. Must find out the source then only you can resolve your problem.
For temporary measure, you can put some charcoal at those high humidity areas 1st.

It is raining season now. Everyday is high humidity. It is 2x the effort to get rid it.

Also if your bathroom is in shading area which is out of sun path, also Need 2x effort.

I have this kind of area which is always wet. Algae and mold is alway there.

yea new plaster ceiling. well the mold is not like 1 big patch of black. just some stains across it and can see the rusted nails patch too.

Yea, how do i do that...i'm still thinking.

Go check around which area have a damp surface.
Then from there start trace the reason.

Currently i also found heavy condensation on my master bathroom fixed glass panel. Hopefully it is not leakage of aluminium members.

How much labour charge to install an exhaust fan?? One contractor quote me RM200 to install with wiring exposed & use 3 pin plug (no wall hacking, no extra wall socket or switch) & I have to supply the fan myself..!!!

If it doesn't look difficult to you, try DIY. Save you RM200.

have been looking at that, my window is 50*38cm, even if take the big 30cm exhaust fan, need make a custom bracket to fit into the hole and fixt the fan. other parts is easy.

Have you found any decent contractor tat install the ventilation fan for glass type? Means he would knows how to cut the window glass to fit the ventilation fan.

I'm looking for one. Do you have a good contractor's contact?

I believe the original reasoning for ceiling mounted exhaust fan is only when that ceiling is naturally vented to the outside air..

And you are right for condo's where the ceiling is closed the solution is to vent it via side wall opening and windows outside to allow new air to ventilate inside the room..

If i remember correctly i believe ASHRAE recommends an air change of 6x to 10 x for domestic living residences and up to 20x per hour for bathrooms..

You must ventilate to remove the natural buildup of dust mites and moisture.. and for static enclosures like condo's and apartments without professional Architect design the additional mechanical ventilation is compulsory to achieve the required air changes..

I found one by asking around, the uncle tat cut the class stays at Aman Suria.
Not easy to find one, even would cost u easily RM 100 for a cut.

U still wan? hehe...

Yes pls pls. Thanks!!

How does the timer work since the vent is tied to the lights, does it mean, when you switch off the light switch, the timer will delay the vent & light for the duration set?

is there a way to have just the vent fan running but light switch off, like those fans in turbo cars?

also for window type with no ledge, can only use those round type?

I search 11street no idea which are suitable. those square ones need to sit on ledge?

http://www.11street.my/totalsearch/TotalSe...cParam=malaysia

any contractor to recommend?

I need to install a exhaust fan on window in my bathroom also...

tot we can open the window but seems not efficient for the passive air flow to suck away all the moisture...