Specifying proper floor prep starts at understanding what you have to start with and what you want to finish with. DMA Floors has been properly preparing floors to receive floor covering for as long as we have been installing floors. In over 30 years of installing floors and through extensive training we have developed best practices for proper preparation. We have the knowledge and with our grinders and shot blasters we have the equipment to do it right for you.
There are two types of moisture issues that can affect your floor; fluid and moisture vapor. Fluid is less common and typically found only when the slab lies below the surrounding water table or during flooding. Moisture vapor emission (MVE) is the most common and has become more of an issue with fast track construction schedules and changes in adhesives over the past decade. Excessive MVE can be caused by lack of cure time under controlled conditions and excessive “water of convenience” used during the placement of the slab (this is why it is important to specify and monitor the proper water/cement ratio for your needs - ACI 211.1,) as well as improper, damaged, or non-existent vapor retarders (ASTM E1745-11.) There are options to remediate MVE (link to moisture remediation) as well as finishes that are not sensitive to moisture vapor emissions (some resinous systems, ceramic tile and polished concrete.)