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Polyaspartic in basement

Quikam801

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Joined
Oct 8, 2022
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3
Hello there,
I have spent a good amount of time on this blog reading other people stories. Here is mine.

I paid some one 9k to grind and polish my basement floor. It looked like **** and was still porous. Next day I got a Husqvarna diamond grinder and spent about 20 hours grinding the 9 grand I just spent down. Once the floor was ready I got some 100 solids epoxy and thinned it 10% with xylene. After that I did a black dye coat of 100 solids. After that came the metalics coat. After that is where the problems start. I really didn't want to but the supply house suggested polyaspartic. So begrudgingly I coated it all with that. It was much harder to work with and very strong smelling. I wanna say it was 80 solids from westcoat. It ended up a bit rough and not as glassy as the metalics. So I sanded it a bunch and put down another coat of some 85-90 solids. (Can't remember exactly.) That was on August 22,2022. Them smell has gone down drastically but it still fills most of my basement almost at random on days. I have had fans on down there. I have a charcoal filter down there as well. Trying to decide if my 20k floor is going to need to be ground down and replaced or if it will continue to dissipate? The first time I laid down the polyaspartic I didn't have any fans just open windows and forced air fan on. Second coat was all fans. Floor seems to be rock hard..
 
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Shea

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Sep 19, 2012
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Yikes... It's never a good idea to use solvent-based coatings or introduce any type of solvent to coatings in a basement. There just is not enough ventilation and open air for the fumes to dissipate properly without stinking up the room or the entire house.

It's possible that the polyaspartic is off-gassing. However, they cure quickly and can be fully cured within a day or two. If you took the time to sand the first coat, I'm guessing it was down for a couple of days or so before you applied the second coat? If so, there should not be solvent trapped from that first coat of polyaspartic. It's possible that the VOCs from the polyaspartic have been absorbed by something in the room and that is what is creating the smell.

I don't think that is where the problem is though. I believe it may be from the 100% solids epoxy that you thinned with the Xylene. Epoxy needs a full seven days to completely cure. If you coated over it within 24 hours with the black coat, you may have trapped solvent in that first coat that did not off gas fully and is slowly finding its way to the surface. The only way to find out is to sand off most of the polyaspartic layer and see if the smell goes away or not.
 
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Quikam801

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Oct 8, 2022
Messages
3
That could be it. But it went down and off gassed quickly and I waited more than 24 hours in-between all coats except the metallic to poly. The poly is when I stared having these lingering issues. I will exhaust all options before I grind it all off. I would never suggest polyaspartic in a home. Idk why the supply house would suggest these things. Guess I should have looked into it more before I trusted them. Big company lots of business so I just went with it.
 
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Shea

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Sep 19, 2012
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Also, if I just leave it alone. Will it eventually stop off gassing?
It may, but it could take a while. Some floors take weeks or even months when solvents get trapped. They typically off gas very slowly and it takes very little to stink up a room. Wish you the best of luck with it though.
 

Armorpoxy

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Aug 18, 2013
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3,735
Location
NJ
Shea is correct that it can take quite a while for the fumes to dissipate in a basement so make sure you have good ventilation while this is going on.

If you end up removing the coating, we have a lot of low VOC options that you would be happy with.
 
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