How to Get Rid of Bathroom Mold

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LESLIE: John is on the line and he’s dealing with how to get rid of bathroom mold. Tell us what’s going on.

JOHN: I have a mold problem around my shower door. I bought the house two years ago. I stripped all the caulking out when I had the mold problem. I’ve put caulking in with a nationally known brand. I even used a Saran Wrap-type thing on my finger to eliminate any contamination. Before I did that, I cleaned it, I stripped it out with a plastic scraper. I also used mineral spirits to clean it out. I put it in and I still have problems with it.

God, I’m just at my wits’ end here. I run the humidity in my basement between 40 and 50 percent. I leave the shower door open. I even shut the furnace vent off in there to try and keep it so it doesn’t have a breeding of bacteria or anything or mold in that.

You’re going to tell me what I need to do. I don’t know if I have an off-spec caulking that I used, which is nationally known, or if I have an off-spec aluminum frame and door that causes the mold. I have no idea.

TOM: Well, look, you’re going to get bathroom mold when you have moisture and organic material. And in a shower, that organic material can be soap and dirt and that sort of thing. So you’re doing the right thing but let’s just back it up and try it again here.

You want to remove the old caulk. You mentioned mineral spirits. I usually recommend a bleach-and-water solution to get rid of bathroom mold because this kills – this is a mildicide that kills anything that’s stuck behind. After you get that all dried out and cleaned out really, really well, then you can apply a caulk with mildicide. I would use a caulk that has Microban in it. DAP caulks are available with Microban and it’s a good antimicrobial additive that will not grow mold.

Now, the other thing I would do to get rid of bathroom mold is I would also make sure that you have – obviously, have a bath exhaust fan and that you have an exhaust fan that’s hooked up to a humidistat, which takes sort of you and anyone else that’s using that bathroom out of the equation. If it’s on the humidistat, it’s automatically going to kick on when the humidity gets high enough to cause mold problems. And it will stay on for some number of minutes when that humidity goes down, to make sure that the room is thoroughly vented out.

That’s the best way to handle that. And I think if you do those steps, you will find success.

JOHN: Hey, thank you very much.

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