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Painting Moldy Bathroom Walls
If you have mold growing on your bathroom walls use a 10% bleach solution to clean them and let them thoroughly dry before painting.
When choosing paint use a base coat primer of mildew resistant paint that is oil based such as Kilz. For your top coat you’ll also want to use a mildew resistant paint in egg shell or satin finish for walls such as Behr Ultra.
Pick paint with minimum sheen because it is more durable and if you need to wash dirty fingerprints or smears it is more scrubbable, but do not use flat paint as it will soak up and hold moisture.
If you have mold growing on your bathroom wall or shower enclosure it is important to stop it before it does more damage. You can use water and a 10% bleach solution in a spray bottle to wash the area to kill any mold spores. Make sure you have on the ventilation fan as bleach fumes are toxic.
Turning the bathroom ventilation fan each time you use your shower will also help by removing moisture from the air before it collects on your walls.
Water on Bathroom Walls
Bathrooms with showers often have moisture that collects on walls and surfaces. Over a period of time this can lead to mold. If you have mold on your bathroom wall it means that there is not proper ventilation in your bathroom.
Most bathrooms have a ceiling fan to remove extra moisture in the air. Turning on your ventilation fan should help remove the moisture in the air before it settles on your bathroom walls. It can also help to leave your bathroom door open when not in use.
If your bathroom has no vent fan, you can take a portable fan and aim it into your bathroom, and then turn it on for 5 or 10 minutes after you shower.