Bostik MVP4 moisture cure urethane membrane for wood floors protects from moisture, with anti-fracture and noise reduction qualities.

Moisture Vapor Protection, Anti-Fracture and Noise Reduction Membrane

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MVP4® Moisture Vapor Protection is a one-part, trowel applied, moisture cure urethane membrane designed to be used beneath glue-down installations of engineered, solid and bamboo hardwood flooring. MVP4® is exceptionally easy to trowel and is designed to minimize moisture vapor transmission from the subfloor, create a noise reduction barrier over the substrate, and establish an anti-fracture membrane that can bridge cracks that can occur in the substrate prior to or after installation (up to 1/8"). MVP4® may be applied prior to any Bostik hardwood adhesive to achieve a warranty for unlimited moisture vapor protection. This membrane has low VOC’s (as calculated per SCAQMD Rule 1168) and does NOT contain any water. MVP4® comes with Bostik’s BLOCKADE® antimicrobial protection, which inhibits the growth of bacteria, mold or mildew on the surface of the cured membrane. The cured membrane resists stains caused by mold.

Where to Use

  • Residential
  • Offices/light commercial
  • Heavy commercial
  • Offices
  • Hospital
  • Exterior
  • Wet areas


  • Concrete
  • Cement patch/underlayment

Flooring Types

  • Solid hardwood 
  • Engineered hardwood
  • Bamboo 
  • Cork
  • Parquet
  • Plywood
  • Ceramic tile, marble, and stone inlays


  • Warranty for unlimited moisture vapor protection
  • Noise reduction typical of 1/4" cork
  • Allows visual inspection of membrane prior to flooring installation

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