Bostik Pro-MSP Hardwood Adhesive with Moisture Vapor Control & Sound Reduction – 20 oz
Bostik Pro-MSP is a one-part MS polymer hardwood adhesive with built-in moisture vapor control and sound reduction. Designed for residential and light commercial applications, it provides strong initial grab, flexible bonding performance, and long-term durability while helping reduce moisture vapor transmission from concrete slabs.
Engineered for ease of use, this solvent-free, low-VOC formula spreads smoothly and cleans easily from prefinished flooring before and after cure. Its elastomeric membrane helps bridge substrate cracks up to 1/8 inch and supports glue-assist and full-spread installations.
Key Features & Benefits
- One-part MS polymer adhesive
- Built-in moisture vapor control
- Sound reduction performance
- Strong green grab
- Bridges cracks up to 1/8 inch
- Solvent-free, low VOC formula
- Easy cleanup from prefinished flooring
- Flexible, elastomeric bond
Moisture Vapor Protection
Provides moisture vapor protection for engineered hardwood installations up to 15 lbs MVER (ASTM F1869) and up to 87% RH (ASTM F2170) when applied as directed. Always follow flooring manufacturer moisture guidelines and substrate preparation requirements.
Approved Flooring Types
- Solid hardwood
- Engineered hardwood
- Bamboo
- Cork
- Parquet
Compatible Substrates
- Concrete
- Plywood and OSB
- Ceramic tile
- Terrazzo
- Cement backer board
- Approved gypsum underlayments
Performance Data
Adhesive Type: MS Polymer
Cure Type: Moisture Cure
VOC: Low VOC compliant
Crack Bridging: Up to 1/8 inch
Format: 20 oz sausage
Application
Suitable for glue-assist and full-spread hardwood flooring installations. Follow proper trowel selection and manufacturer installation guidelines to ensure required coverage and bond performance.