Does anyone have a recommendation for a no-VOC, no-fomaldehyde underlayment/vapor barrier for a concrete subfloor? I'm floating engineered hardwood over concrete. Thanks

I'm going to partially answer my own question. After a lot of research, I found this site:

http://www.scscertified.com/products/index.php

They certify many different types of flooring products according to different indoor air quality programs (FloorScore, Indoor Advantage Gold, CARB). Those certifications indicate low/no VOC emissions, etc.

The link above allows you to search their product certification database.

I'd still be interested if anyone has a recommendation/opinion on the performance of a particular "green" underlayment/vapor barrier.

Thanks,

Jack

There's one thats recycled rubber with a foil bottom but I forgot the name. Your looking for something without plastic I'd imagine?