VELOSIT Flooring & Moisture Control Systems
VELOSIT PR 303
Moisture Vapor Emission Control Primer
VELOSIT PR 303 is a universal epoxy moisture primer designed for challenging substrates with high moisture content or excessive water vapor emissions. Engineered for flooring systems, coatings, and moisture-sensitive applications, it delivers strong adhesion and reliable moisture control performance.
Epoxy moisture primer • Vapor emission control • Resin flooring primer • Moisture barrier • Part A + B system
Product Overview
VELOSIT PR 303 is a professional-grade moisture vapor emission control primer suitable for many substrates and demanding flooring environments. It is designed to improve substrate performance, reduce moisture-related failures, and provide a stable base for coatings, adhesives, and resin systems.
Typical Applications
Resin Flooring Systems
Standard primer for epoxy and resin flooring installations requiring strong substrate bonding.
Moisture Barrier
Helps protect sensitive flooring materials and adhesives from excessive moisture vapor emissions.
Polyurea Coatings
Suitable as a primer for Polyurea coatings and joint materials.
Asphalt Primer
Can be used as a primer for asphalt applications with solvent addition.
Scratch Coat Production
Designed for production of scratch coats and cove mortars in flooring systems.
Critical Substrates
Engineered for difficult substrates with high moisture content and vapor transmission concerns.
Packaging & Components
| Product Type |
Epoxy Moisture Primer |
| Packaging Size |
3.5 Gallon Kit (25 kg / 55 lb.) |
| Component A |
21.7 kg (47.7 lb.) |
| Component B |
3.3 kg (7.3 lb.) |
| System Type |
Part A + B |
Recommended Uses
Commercial Flooring
Industrial Flooring Systems
Moisture-Sensitive Adhesives
Epoxy & Resin Coatings
Polyurea Systems
Concrete Substrate Preparation
Reliable Moisture Control for Demanding Flooring Systems
VELOSIT PR 303 helps protect flooring systems from moisture-related failures while providing strong adhesion and professional-grade substrate preparation for modern construction and renovation projects.
