EMERGENCY WaterStop | Underwater & All-Weather Sealant
EMERGENCY WaterStop by PROSOCO is a fast-acting, gun-grade STP sealant formulated to provide immediate waterproofing in the harshest conditions. This single-component, silyl-terminated polymer is designed to bond to most construction materials—even when underwater or in wet environments—delivering unmatched versatility and reliability for emergency repairs.
Product Description
Ideal for sealing active leaks or wet substrates, EMERGENCY WaterStop is a viscous blue paste that cures into a flexible, high-performance, elastomeric barrier. With a 99% solids formulation and no mixing required, this solution eliminates weather-related construction delays and is suitable for interior or exterior applications. It can be applied even at sub-zero or extreme high temperatures, making it the go-to sealant for critical building envelope repairs.
Key Benefits of EMERGENCY WaterStop
- Stops water and air infiltration immediately—wet or dry
- Performs in extreme temperatures from -70°F to 300°F (-57°C to 149°C)
- Can be applied underwater or in standing water
- Withstands UV exposure for up to 12 months
- Single-component, no mixing, fast application
Common Applications
- Emergency leak sealing in construction and maintenance
- Sealing wall penetrations or transitions in rainy or humid environments
- Submerged and exterior water-resistant sealing tasks
Storage & Packaging
Available in 9.7-oz cartridges. Store tightly sealed and unopened for up to 1 year.
Product Properties
| Property | Value |
|---|---|
| Form | Viscous blue paste, mild odor |
| Total Solids | 99% |
| VOC Content | 30 g/L, maximum |
| Flash Point | >200°F (>93°C) |
| Freeze Point | Not applicable |
| Coverage Rate | 10 sq ft sealed at 12 mils |
| Shelf Life | 1 year in tightly sealed, unopened container |
| WT/GAL | 11.85 lbs |
Also see SureSpan Adhesive for high-performance bonding. Visit PROSOCO for more sealant solutions.
