I'd appreciate some advice on what I can use to fill fine, deep cracks in my 1-1/2" gypcrete floor to stop it from making crunching sounds when I walk on it.
I suspect that I'd need a liquid that's thin enough to penetrate the cracks to full depth and then harden within a short time. Since water isn't compatible with gypcrete, the filler couldn't be water-based.
Thanks in advance for your helpful replies.