Bostik MVP4 Moisture Vapor Protection

$155.99 $144.99

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


Bostick MVP4 Technical Specs 

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.



MVP4® has extremely low moisture vapor permeability and is not adversely affected by moisture. As a result, costly and time consuming concrete moisture testing is not required when 1) the slab is properly prepared, dry to the touch, and fully cured, and 2) MVP4® is used in conjunction with an approved Bostik adhesive. Approved Bostik adhesives are identified on the Bostik Limited Warranty for Hardwood Flooring Installation Products that can be found on the Bostik website,

MVP4® provides a premium sound reduction barrier over the substrate that typically outperforms 1/4″ thick cork underlayment (when used as a system with Bostik’s Best®). This eliminates the
costly labor and materials required to transport and install these secondary acoustical sheet membranes. Independent testing laboratory results are summarized on the table to the right (when is used as a system with Bostik’s BEST®).

MVP4®’s elastomeric characteristics establish an anti-fracture 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 membrane to move with the wood as it expands and contracts with changes in humidity and temperature over the life of the floor.

This high-performance formulation may be used beneath engineered, solid, bamboo, cork, and parquet flooring with no restrictions on board width or length. It may be used overall properly prepared substrates common to hardwood flooring installations, including concrete, cement patch/underlayments that have no moisture vapor limitation (such as Bostik SL-100™, SL-150™, SL-175™, SL-200™ Webcrete® 95, Webcrete® 98 or UltraFinish™ Pro). This membrane can also be used prior to the installation of glue-down plywood as described.

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Additional information

Weight75 lbs
Dimensions24 × 24 × 24 cm