Specified as a “leave-in-place membrane-forming curing compound” under 03.39.23 in CSI MasterFormat, Go-Early Technology remains on the slab as a membrane-forming moisture-mitigation system (ASTM 3010) for use under final flooring systems.
Manufacturers and suppliers in the flooring industry are responding to the call for more environmentally responsible products for non-residential applications. While raw material suppliers study the science of sustainable plasticizers, manufacturers have capitalized on new emerging technologies to develop products offering increased design flexibility, but reduced ecological impact.
The sound transmission class (STC) and impact insulation class (IIC) are ASTM-derived single number ratings that try to quantify how much sound a stopped by partition being tested. Laboratory testing involves an ideal setting for the floor/ceiling assembly—it is isolated from the walls, and there are no penetrations for HVAC, plumbing lines, sprinklers, can lights, or electrical boxes. In the field (i.e. F-STC and F-IIC), the floor/ceiling assembly often sits on load-bearing walls, is connected to the structure, and contains many ceiling and floor penetrations for the items just mentioned. Consequently, the code allows for a lower rating for field scores over those in the lab.