VaporCheck Mastic is a single-component, trowel-grade, polymer-modified, water-based emulsion designed as a waterproofing and vapor barrier. It’s formulated to work with Viper underslab vapor barriers and is suitable for both new construction and retrofit projects.

Key Features & Design

• Single-component, trowel-grade formulation and polymer modified, water-based emulsion designed as a waterproofing and vapor barrier.
• Forms a tough, seamless, elastomeric membrane after cure with excellent resistance to moisture and vapor transmissions.
• Specifically formulated to act as a waterproofing and vapor barrier for use in conjunction with Viper underslab vapor barriers.
• Applied by trowel or putty knife to and around penetrations through Viper underslab vapor barriers.
• May be applied to exterior vertical or horizontal surfaces of cast-in-place concrete, concrete masonry units, wood, metal, foam, OSB and ICFs.
• Suitable for both new and retrofit construction.
• Latex modified asphalt clay emulsion with polymers and colloids to formulate a waterproof coating.
• 100% free of asbestos, VOCs and HAPs.

VaporCheck Mastic delivers dependable moisture control across diverse substrates with a straightforward application approach. It keeps the focus on performance, not drama, so your builds stay on track and on budget.