Moisture Vapor Control Coatings
MOISTURE VAPOR CONTROL COATINGS
Epoxy moisture control systems are chemical barriers that are used to prevent moisture damage to flooring. Excessive moisture vapor emissions in concrete slabs can mean significant, expensive damage to a flooring installation. Hundreds of millions of dollars are spent annually just in the United States to correct moisture-related problems in flooring. These problems include failure of the flooring adhesive damage to the floor covering itself, such as blistering the formation of efflorescence salts; and the growth of mold and mildew.
ASTM F3010-13 “Standard Practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation Systems for Use Under Resilient Floor Coverings” was adopted to establish performance criteria required for two component membranes employed as concrete moisture control systems.
Excess moisture in concrete is defined by that amount of moisture emitting from the concrete subfloor that exceeds the amount allowed by the flooring manufacturer. This condition occurs when the flooring is installed before the water in the concrete mix that is not needed for hydration (strengthening) has had adequate time to evaporate. Causes of this condition include a construction schedule that does not allow at least 28 days for the slab to dry; using too much water in the concrete mix; installing the slab without a puncture- and tear-resistant, low-permeability vapor barrier beneath it; rewetting of the slab due to precipitation; inadequate drying conditions, which can include air temperatures that are lower than 50°F, high humidity in the surrounding air and poor airflow; and liquid water infiltration due to external sources, such as broken pipes, irrigation, improper sloping of the landscape, condensation, cleaning and maintenance, and moisture from flooring adhesives.
Our MVT Coatings are formulated to prevent moisture-related disbondment of non-permeable resinous systems and other floor coverings and floor treatments.
Call us to learn more about MVT and how we can help.!
Please Take Note:
given work place liability, safety of our workers and those within close proximity to the process as well as inconsistent results, we no longer acid etch or advocate its use as a surface preparation method for concrete flooring to receive a resinous system. In order to produce the correct surface profile for the greatest adhesion we use steel shot blasting equipment, both portable and electric depending on what the work environment dictates, as well as planetary diamond grinding equipment for the purpose of readying the concrete for its respective resinous system. Using diamond tooling, our grinding process can be used to remove coatings (aggressive diamonds) or grind existing concrete (medium to coarse diamonds to produce an anchor profile). For the purpose of polishing concrete we can also use finer diamonds to create a honed or highly polished look. We also grind existing paint to ready a surface for new coating.