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Old 10-22-2013, 09:05 PM   #1
Join Date: Oct 2010
Location: North Dakota
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Mold from New Joint Compound

Has anyone had an issue where they applied mud and a few days maybe a week later mold started to show?

I am redoing a bathroom in my basement and am at the point where I'm putting on the last coat of mud. after a week or so brown spots started to show up.

The first coat of mud(green lid) for setting the tape, there is no mold. And that's been sitting there for like 1 to 2 weeks before the finishing coats. I use the blue lid mud for easy sanding. Then is where the mud started to show.

Any ideas of how I can fix this without tearing down the drywall?


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Old 10-22-2013, 10:06 PM   #2
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Sounds more like a moisture issue then mold.
What's the humidly level in the basement?
Try a few dabs of bleach on it, if it's mold it should clear up in a few minutes.
Tell us more how this room was built from the foundation out to the sheetrock.


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Old 10-23-2013, 11:30 AM   #3
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Hello Joe, thanks for the reply,
Its been rainy here for October, so i'd say the humidity has been a little higher.
I did spray it with bleach and it didn't really change color.
The room is a remodel and it had drywall before. From the exterior wall its goes like this..exerior concrete wall, studs with insulation, vapor barrier, and then drywall. Has a concrete floor being in the basement.
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