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Six months ago or more, my friend used a 2-part epoxy (no longer have the packaging, but it's a double-syringe with clear liquids, purchased at Home Hardware) on something, and some of it (one or both liquids) got on our basement floor, which is concrete someone had painted grey before we moved in. Well, the reaction between the epoxy and (I had thought) the paint smells like a burning rag of cat pee. After the nth cleaning of it with vinegar and baking soda, I one day just duct taped it over to at least stop the smell, since it was winter and (enough) fresh air (for this particular smell) was hard to come by in our house without central air without us freezing to death.

Today I decided to try sandpaper, and sanded down to the concrete, and no matter how much I sand I can now see the outline of the spill in a grey-brownish shadow on the white concrete, and I can still smell the damn stuff. I smell three inches away on the floor and it smells neutral. It's just that one spot, and it can stink up the whole room if I leave it.

What will take care of the smell (while not adding another smell to take care of)?

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1 Answer 1

The easiest and most cost effective way of dealing with it is to paint over it with something like drylok. You can't really do anything about the smell itself other than removing the epoxy but you can put up a good barrier.

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Right, but what does 'removing the epoxy' entail if even sanding isn't working? Thanks for the tip though, I'll look into drylok. –  Kev Jul 9 '13 at 2:41
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Chisel or diamond sanding wheel. You can't just use regular sand paper. –  DMoore Jul 9 '13 at 2:47
    
Drylok says 'low odor' but I'd prefer 'no odor' otherwise this may be trading one problem for another (as would chiseling be, because I really don't know how to fix that up afterwards.) Maybe someone I know has a diamond sanding wheel. –  Kev Jul 9 '13 at 14:00
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You can get a angle grinder and diamond flap disk pack for $40 in the US at harbor freight. Also drylok is not "smelly" after a couple days. It compares to other paints. –  DMoore Jul 9 '13 at 15:04
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The difference between the odor of the epoxy and the drylok is the odor from the drylok WILL dissipate. –  longneck Jul 9 '13 at 19:41
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