I have a project which wants to use Tyroc subflooring, has anyone heard or used this product? This product is not a finished flooring product or FloorScore or Greenguard certified. However, the mfg is claiming that as a mineral-based flooring product, it is compliant without any further testing -http://www.tyrocinc.com/environment/. Underlayment, subflooring is part of the flooring system so how can I determine if this product is compliant? Does it need a certain certification?