Division 03 specifies concrete floor surface flatness requirements to be installed by the concrete contractor. However, Division 09 specifies the concrete floor surface flatness for the flooring installer that must be met before installing the floorcovering.
Concrete floor slabs contain excess moisture that can damage many types of floor finishes. To address this problem, manufacturers have developed products aimed at mitigating the moisture in concrete. However, not all these products are suited to their intended purpose.