Viper II VaporCheck Mastic
Viper II VaporCheck Mastic is a high-performance, single-component, trowel-grade polymer-modified emulsion designed for use as a waterproofing and vapor barrier solution. This product forms a tough, seamless elastomeric membrane, providing excellent resistance to moisture and vapor transmission. Ideal for use with Viper under-slab vapor barriers, VaporCheck Mastic is suitable for new construction and retrofitting projects. It can be applied to a variety of surfaces including concrete, metal, wood, and foam, offering flexibility in demanding construction environments.
The latex-modified asphalt clay emulsion is easy to apply with a trowel or putty knife, ensuring that penetrations around pipes and rebar are sealed effectively. VaporCheck Mastic is free of harmful substances like VOCs and asbestos, making it a safe and eco-friendly choice for your projects. Whether applied to steep or vertical surfaces, it holds firm without sagging or running. Its fast-curing formula allows for quick job completion, typically curing in 24 hours, depending on temperature and humidity.
This mastic provides strong adhesion even on damp surfaces, making it a versatile solution for challenging conditions. By creating a monolithic barrier around penetrations, it enhances the moisture protection for the entire structure, helping to prevent long-term damage caused by water or vapor infiltration.
Features
- Forms a tough, seamless elastomeric membrane for vapor and waterproofing.
- Easy application using a trowel or putty knife.
- Compatible with a wide range of surfaces including concrete, wood, and metal.
- Eco-friendly: free of VOCs, HAPs, and asbestos.
- Fast curing in as little as 24 hours, depending on conditions.
- Resistant to chemical attacks, acids, and salts found in soils.
- Effective at sealing around penetrations like pipes and rebar.
- Adheres well to dampened surfaces for enhanced versatility.
- Recommended application thickness of 60-mils wet, yielding 40-mils dry.
- Resistant to temperatures up to 210°F once applied.
- Self-priming, no additional primer required.
- Ideal for use with Viper under-slab vapor barriers.
Viper II VaporCheck Mastic Specifications
| Property | Test Method | Results |
|---|---|---|
| Density | N/A | 8.1 lbs/gallon (0.92 g/cm²) |
| pH | N/A | > 9.5 |
| Viscosity | N/A | > 6000 cP |
| Hydrostatic Pressure Over Cracks | ASTM C 1306 | Rapid Test: Passes at 3.7 PSI (25.8 kPa) Long Term Test: Passes @ 2.5 psi (17.24kPa) |
| Dry Content | ASTM C 1250 | > 64% |
| Low Temp Flexibility & Crack Bridging | ASTM C 836 SEC. 6.7 | No Cracking or Loss of Adhesion @ -14.8°F (-26°C) |
| Heat Flow Test | N/A | Liquifies @ 385°F (196°C), Softens @ 150°F (65°C) |
| Adhesion Strength to Poured Cement | ASTM C 836 SEC. 6.10 | 13.239 lbf/in (1.49 N/m) |
| Adhesion Strength to Masonry | ASTM C 836 SEC. 6.10 | 12.092 lbf/in (1.37 N/m) |
| Pull Adhesion Strength to Poured Cement | ASTM D 4541 | 77.2 psi (532.3 kPa) |
| Pull Adhesion Strength to Masonry | ASTM D 4541 | 106 psi (730.8 kPa) |
| Resistance to Water | ASTM D 2939 SEC. 15 | No Blistering or Re-emulsification |
| Remain in Place During Application | ASTM C 836 SEC. 6.9 | Final thickness of 0.0162 in (0.411 mm) @ > 24 hrs |
| Water Vapor Permeance | ASTM E 96 | 0.138 U.S. Perms (0.091 Metric Perms) |
| Extensibility After Heat Aging | ASTM C 836 SEC. 6.12 | Pass 1/4 in (6.35 mm) Stretch With No Cracking |
| Tensile Strength | ASTM D 412-98 | 41.3 psi (284.75 kPa) |
| Elongation | ASTM D 412-98 | > 1800% |
| Nail Sealability | ASTM D 1970-01 | No Leaks |
