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Old 09-29-2012, 04:00 PM   #1
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Can topping compound go bad?

I decided to patch some small holes in the wall today and I went to open a tub of Lafarge low-dust all purpose joint compound, and after I opened it, I looked like this ---->


The tub is maybe a year or two old and was tightly sealed and kept indoors. There are no funky stains or colors in it, and it still has the right consistency, but it just smells so awful I don't want to use it. Does that stuff go bad over time? Should I pitch it?


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Old 09-29-2012, 04:45 PM   #2
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yes it can spoil, usually grows mold eventually, you should only buy enough pre mix for what you're doing.


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Old 09-29-2012, 07:51 PM   #3
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Yep! It will spoil. Usually in way less than a year...
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Old 10-01-2012, 08:17 AM   #4
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You can stop this from happening or at least greatly slow it down by before you put the lid on put a little bleach in some water (enough to cover the mud) then seal it tight. Just remember to pour it off before you stir and reuse the mud.
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