Description
EFA+™ Wood Flooring Adhesive and Moisture Vapor Retarder
Bostik EFA+™ is an easy-to-trowel urethane hardwood floor adhesive and moisture control membrane with superior properties that provide a tough, flexible, and tenacious bond to a variety of surfaces. Its elastomeric characteristics allow the adhesive to move with the wood as it expands and contracts over the life of the floor.
Cure Time: Light foot traffic 6 to 8 hours / Normal foot traffic 8 to 12 hours
Open/Working Time: 180 minutes
MOISTURE PROTECTION
Bostik’s EFA+™ has low moisture vapor permeability and is not adversely affected by moisture. As a result, it will reduce moderate
amounts of moisture vapor transmission through the concrete. When applied as directed as a moisture vapor membrane, it will prevent damages caused by subfloor moisture beneath dimensionally stable, engineered wood flooring only.
ANTI-FRACTURE PERFORMANCE
Bostik’s EFA+’s elastomeric characteristics establish an antifracture membrane that can bridge cracks up to 1/8″ (3mm) which can occur in the substrate prior to or after installation. This superior elasticity allows the adhesive to move with the wood as it expands
and contracts with changes in humidity and temperature over the life of the floor
ULTIMATE VERSATILITY
Bostik’s EFA+™ may be used to adhere all engineered, solid (adhesive only), bamboo (adhesive only), cork, and parquet hardwood flooring (adhesive only). This adhesive can also be used to install plywood as described, as well as ceramic tile, marble, and stone inlays for light commercial and/or residential applications. Bostik’s EFA+™ may be used over all properly prepared substrates common to hardwood flooring installations including: concrete, plywood, OSB, well bonded vinyl/VCT and ceramic tile, cement
backer board, gypsum underlayments (dry, above-grade), cement patch/underlayments, radiant-heat flooring, and properly prepared terrazzo.
