Bostik Vapor-Lock™ – All-in-One Adhesive, Moisture Barrier, and Sound Reduction for Wood Floors

Looking for maximum protection and performance in a single step? Bostik Vapor-Lock™ combines a high-performance adhesive, unlimited moisture vapor barrier, and sound-reducing membrane all in one easy-to-use product. Perfect for installing engineered hardwood, solid wood, bamboo, cork, and parquet floors, this powerhouse solution saves time and delivers serious results.

With Bostik’s exclusive Thickness Control™ Spacer Technology, you’ll always get the perfect membrane thickness for consistent moisture protection and sound control. Plus, Vapor-Lock™ is 0-VOC, GREENGUARD Gold Certified, and even inhibits mold and mildew with BLOCKADE™ antimicrobial protection.

Why Choose Bostik Vapor-Lock™?

• Lifetime unlimited moisture vapor protection—no concrete moisture testing needed for hardwood

• High-tack adhesive for fast, secure installation

• Built-in sound reduction—outperforms traditional cork underlayments

• Bridges cracks up to 1/8" with anti-fracture technology

• VOC-free and contributes toward LEED® points

Use Vapor-Lock™ over concrete, plywood, OSB, well-bonded vinyl, ceramic tile, and more.

Protect your floors from moisture, sound, and movement—install smarter with Bostik Vapor-Lock™!