How can I prevent my bathroom walls from getting moldy after a remodel without having to wipe them down constantly?
Asked by Egidius Van Zandvoort 
1 month ago
Last Updated: October 21, 2024
Hey, not sure if you guys can help me out, but we recently remodeled our bathroom and the walls keep getting damp after showers. They were painted white before, and I know we need better ventilation in there. Any suggestions on how to stop this from happening, other than wiping down the walls after every shower? Maybe some sealing paint or something I can use to cover it up?
Let’s switch out the fan for one with higher (cfm’s) to prevent this from happening again. Also, double check that the exhaust pipe isn’t blocked and the outside vent cover is functioning properly.
You were right about needing to replace the fan as the key solution. Once the fan is replaced, wash your walls with TSP and then paint them. Just make sure to avoid running any showers or baths for about a week while the paint dries to prevent excess humidity.
For a 50sqft bathroom, I recommend choosing an exhaust fan with a higher CFM, like an 80CFM fan. This will help prevent fogging and moisture buildup on your mirror.
Forget cold showers – proper airflow to the outside is what you really need to focus on.
I tried using water-based paint in my bathroom for the first time. I really should have stuck with oil-based paint like I did last time. Looks like I’ll have to prime and paint again. If you’re going with water-based paint, make sure to invest in a high-quality option or go for a trim paint like Ben Moore Advance.
The exhaust system is the key to controlling this situation, and you may need to clean it frequently. There’s no quick fix for this.
Struggling to win without improved ventilation.
Kilz primer
Improving air circulation