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Enviro-Prep Systems

De Neef® System

Leaks stop here

Underground construction pros trust versatile De Neef® solutions for every type of project.

For decades, De Neef® solutions have led the way in stopping leaks where they start. Our injection grouts cover the full range of products for sealing leaks and controlling water and providing solutions for soil stabilization.

On many projects, our grouts and products are used together as a complete system. But our fast, proven and durable products are just the start. De Neef® complete solutions also feature local teams of well-trained installers, suppliers and field service engineers.