PRO BLOCK™ MMS is a two-component, solvent-free, 100% solids epoxy-based moisture management one-coat system sealer designed to: (1) Protect flooring system up to 100% RH as per ASTM F-2170; (2) Reduce moisture vapor emission rate of a concrete substrate up to 25 lbs/1,000 sq. ft. per 24 hours down to less than 3 lbs/1,000 sq. ft. per 24 hours in a single coat as per ASTM F-1869; and (3) Resist pH levels up to 14 as per ASTM F-710. PRO BLOCK MMS applies easily with a squeegee or roller, dries quickly with up to a 30 minute pot life for improved working time and emits no VOC making it an environmentally friendly product. PRO BLOCK MMS can also be used as a high-performance bonding agent for self-leveling toppings and self-leveling underlayments (up to 50 mm [2″] thick) when used with sand broadcasting.