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WE SEAL WATER

Sovereign International, Inc. is a privately-held, water-sealing company specializing in the manufacture and application of patented polymer grouts.  Sovereign formulated its first grout in 1972 for control of high flow-high pressure water ingress into deep subsurface mines in South Africa.  Since that time, Sovereign has developed several proprietary grouts, and our expertise and products are in demand world-wide.   Over the past 4 decades, Sovereign has successfully sealed leaking mines and shafts in 37 countries, and has diversified application of its patented grouts beyond mining into the civil, tunneling, well leak mitigation, compressed air energy storage (CAES) and nuclear groundwater containment arenas.

PROJECTS
Mining

Application of Sovereign’s patented grouts for water control for deep subsurface mines started in South Africa in 1972.

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Nuclear

Research on effective application methods for Sovereign’s radiation tolerant grout are ongoing.


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Civil

Sovereign provides sealing solutions for civil projects ranging from subgrade facilities to rooftop structures.

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PUBLICATIONS
THE SCEM 66 WATER CONTROL SYSTEM

Water Sealing With NOH2O on the Fukushima Site - 17477

Curtain Grouting for Leak Mitigation in Tunnels

Leak Mitigation Grouting for New York Subway Tunnels

Polymer Emulsion Grouting for Water Cutoff in Tunnel Structures