Marldon MXS150 Rapid MVS The Marldon MXS150 Rapid MVS is a high-performance, single-component, solvent-free polyurethane moisture vapor suppressant designed to deliver fast, reliable protection against subfloor moisture. Engineered to control moisture levels up to 92% relative humidity (RH) with just two coats, MXS150 provides an efficient and versatile solution for a wide range of flooring installations. It can also be used as a single-coat primer on various substrates, offering added convenience and flexibility. Fully compatible with underfloor heating systems, this rapid-drying formulation works seamlessly with Marldon adhesives and other Marldon subfloor preparation products to ensure a complete and dependable system solution. Key Advantages: Solvent-free formulation for safer, more sustainable application Fast drying, helping accelerate project completion Ready to use — no mixing required EC1 Plus certified for low emissions and improved indoor air quality Compatible with underfloor heating systems Functions as both a primer and moisture vapor barrier, simplifying floor preparation