If that s outside of your budget you can install a timer switch on the existing fan.
Mold in bathroom ceiling and walls.
Wearing gloves and a mask can protect people from inhaling any mold spores as.
If you apply the mold resistant paint to the ceiling you already have a fool proof solution to mold problems in that region of your bathroom.
Typically a bathtub shower or entire bathroom remains damp enough for mold growth just from showering or bathing common causes of bathroom mold.
Here is a link.
Squeegee shower walls and glass doors after every use to help remove the moisture that encourages the growth of mold on your walls and also prevent unsightly hard water and soap scum buildup.
Mold and mildew resistant paints are naturally designed to prevent mold and mildew from growing in the house.
The lack of light in the bathroom would not directly cause the mold growth.
Bathroom mold occurs primarily because mold loves damp dark isolated spaces says larry vetter of vetter environmental services in smithtown n y.
Pour into a spray bottle.
Liberally apply on painted walls.
Mold can often be found in the shower and the bathtub.
The main cause of mold on a bathroom ceiling is a broken or ineffective exhaust fan.
Cleansers with bleach or even white vinegar can often keep the slimy hairy growths from taking root in the bathroom.
Nothing beats this practical solution to mold in the bathroom ceiling.
I recommend replacing the fan with a constant flow unit such as the panasonic whispergreen fan.
And of course there are abundant water sources for mold created by the running water and steam.
Combine two tablespoons of borax with 1 4 cup white vinegar and two cups of hot water in a bowl.