Bostik EFA+™ – Easy-to-Spread Urethane Adhesive and Moisture Vapor Retarder
If you’re looking for a flooring adhesive that’s flexible, tough, and ready to tackle moisture concerns, Bostik EFA+™ is a top choice. This easy-to-trowel, urethane adhesive offers a strong, elastic bond that moves with your wood flooring through seasonal changes, ensuring long-term stability.
Perfect for engineered hardwood, solid wood (adhesive only), bamboo (adhesive only), cork, and parquet floors, EFA+™ also acts as a moisture vapor retarder, protecting against moderate moisture from concrete slabs up to 15 lbs MVER or 87% RH.
Why Choose Bostik EFA+™?
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Easy spreading and great ridge retention for faster installations
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Moisture protection—ideal for subfloors with moderate moisture levels
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Bridges substrate cracks up to 1/8" with built-in anti-fracture properties
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Low VOC and LEED® v4 contribution for better indoor air quality
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Flexible bond that expands and contracts with changing humidity
Coverage:
Bostik EFA+™ can be installed over concrete, plywood, OSB, radiant-heat flooring, and more—giving you versatility no matter your project.
Make every wood floor installation smoother and safer—choose Bostik EFA+™ for outstanding performance!
