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Construction Products







De Neef®, a division of GCP Applied Techno​logies, is a global leader in underground leak sealing, water blocking and soil stabilization solutions.

Product innovation and applied k​nowledge for solving highly complex problems in the most challenging situations for more than 35 years, De Ne​ef® puts construction back on track fast and provides customers lasting peace of mind.

Fast, Proven and Durable, De Neef® stops leaks where they start​


See the benefits of using De Neef® in your project​​​​​​​​​​​​​​​