Pro-Bond™ may be used on concrete slabs with moisture vapor emission rates (MVER) up to 5 lbs. per 1,000 square feet per 24 hours (using an anhydrous calcium chloride test kit according to ASTM F-1869 test method), and up to 80% relative humidity (RH) (tested in accordance with ASTM F-2170). For substrates that are greater than 5 lbs. MVER or 80% RH, use Bostik’s MVP4® prior to the application of Pro-Bond™ or use Bostik’s GreenGrip™ or UltraGrip™ for unlimited moisture vapor protection.
Pro-Bond™ may be used to adhere all engineered, solid, bamboo, cork, and parquet hardwood flooring. Pro-Bond™ may be used over all properly prepared substrates common to hardwood flooring installations including: concrete, plywood, OSB, cement backer board, gypsum underlayments (dry, above-grade) and cement patch/underlayments.