MasterProtect HB 300SB is a waterborne, high-build, modified acrylic waterproof coating for above- grade concrete, stucco, block and brick surfaces. 

Product Highlights

  • Green concrete application expedites project completion

  • Suitable for cool weather applications

  • Adheres to properly prepared smooth and chalky surfaces

  • Primerless adhesion saves time and money

  • Resists wind-driven rain, helps prevent water penetration into the substrate

  • Breathable to allow water vapor to escape

  • Available in smooth and fine sand texture for varied finished appearances 


  • Exterior

  • Vertical

  • Above-grade

  • Protecting and waterproofing 


  • Concrete

  • Masonry

  • Stucco

  • Existing Coatings