Low VOC in Hot and Humid Climates?

Jolie Lemoine's picture
Jolie Lemoine
LEED Consultant
October 31, 2013

I am experiencing an extremely toxic smelling epoxy sealer being poured at Medical Clinic, so that a flooring contractor can install water-based low-voc adhesive flooring. The issue, according to our understanding is pervasive in both new and existing slabs and has surfaced only recently (last 9 months) in this area. It is a direct result of the industry switching to low-voc (water-based) adhesives which are more susceptible to moisture drive through slabs than the old stinky, but sticky adhesives of the past.

After dealing with this issue for about two months now during construction, I’m beginning to think there might be something about the humid environment in Louisiana that makes it impossibly difficult to dry concrete out to the levels now required by the flooring industry, therefore leading to this stinky, expensive, and non-environmental fix on many projects on both existing and new slabs.

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Olga G. Alvarez, ASID, IIDA, LEED-AP, GGP's picture
November 1
0 users voted0 users voted
Answer: 

It's unfortunate that you're having to utilize the "stinky, expensive and non-environmental" fix for your project. Concrete slabs can be an issue with moisture. It can be anything from the wrong concrete mix to just not curing properly. Also, having a vapor retardant under the slab can help.

There are some good water-based epoxy solvents (Safecoat, BioVee) and some solvent based epoxy coatings that have low VOCs (Armorpoxy, Surecrete, Decosup) but you need to research which one is available and would work best in your State.

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