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Old 10-22-2013, 09:05 PM   #1
Join Date: Oct 2010
Location: North Dakota
Posts: 228
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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
Join Date: Nov 2011
Location: Hartfield VA
Posts: 26,246

Mold from New Joint Compound

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.

When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
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Old 10-23-2013, 11:30 AM   #3
Join Date: Oct 2010
Location: North Dakota
Posts: 228

Mold from New Joint Compound

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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