Question from raftergirl
Debra–Thanks for your work in hosting this Q&A, I rely on it for lots of decisions! So thanks!
I have a question about Gyp-Crete. Here is the MSDS link: http://www.maxxon.com/MSDS/MSDS_MAXXON_UNDERLAYMENTS.pdf
I have MCS and we may put down radiant floor heating to provide safe heat. Our contractor suggested using Gyp-Crete instead of regular cement to house the tubing because it is much less weight (we are retrofitting the system into an older house). We would finish out the Gyp-Crete as our flooring (no wood or tile on top).
Since the Gyp-Crete will be heated I want to be sure if won’t off gass. This is a concern to me as I’m very chemically sensitive. The MSDS sheet says it is primarily Gypsum and Portland Cement. But it does have a list of other additives. What do you think?
Thanks so much!
Debra’s Answer
This looks fine to me in terms of offgassing. All of the ingredients listed are particles, not gasses, and once bound up in the cement they will not be released with heat in the same way gasses are released.
Be careful about the finish applied, as that WILL outgas vapors until all the solvent has outgassed.
