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Prosoco EMERGENCY WaterStop 9.7 oz tube (Box/20ea.) - MasonryDirect.com

Prosoco EMERGENCY WaterStop Waterproof Sealant 9.7oz Cartridge


Regular price $27.99 Sale


R-Guard EMERGENCY WaterStop is a gun-grade, wet sealant that combines the best of silicone and polyurethane properties. This single component, Silyl-Terminated-Polymer (STP) is easy to gun and tool in all weather conditions. EMERGENCY WaterStop seals and bonds to most building materials – even when submerged in water – producing a durable, high performance, high movement elastomeric sealant.

The ability to install EMERGENCY WaterStop underwater and in adverse conditions eliminates many weather-related construction delays and makes it possible to dry-in buildings being damaged by active water leaks. EMERGENCY WaterStop adheres to most surfaces and is immediately waterproof.


  • Solvent free. Isocyanate free. Complies with all known VOC regulations.
  • Silane functional polymer provides superior long-term adhesion, crack bridging and weathering characteristics.
  • Bonds to most common building materials – wet or dry – without priming.
  • Bonds and cures in wet weather and on wet surfaces.
  • Easy to repair if damaged.
  • Single component requires no mixing.
  • Easy to gun and tool in all climates.
  • Withstands UV exposure for up to 12 months, depending upon conditions.
  • No shrinkage. No staining. Non-yellowing.
  • Breathable – allows wet surfaces to dry.
  • Stops penetration of air and water under normal and extreme weather conditions.


  • Do not apply when temperatures are below 35°F (2°C) or above 110°F (43°C).


VOC Compliance

R-Guard EMERGENCY WaterStop is compliant with the US Environmental Protection Agency’s AIM VOC regulations. Visit www.prosoco.com/ voccompliance to confirm compliance with individual district or state regulations.

SAFETY INFORMATIONpage1image3252710592

Always read full label and SDS for precautionary instructions before use. Use appropriate safety equipment and job-site controls during application and handling.

24-Hour Emergency Information: INFOTRAC at 800-535-5053