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

Prosoco EMERGENCY WaterStop Waterproof Sealant 9.7oz Cartridge


Regular price $32.99 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 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