Water was leaking around the annulus of this pipe intrusion. To stop the leaking water, polyurethane grout was injected utilizing a mechanical injection packer and a battery powered grease gun. The grout used was Hyperflex, which is a pre-catalyzed single component hydrophobic polyurethane. Hyperflex reacts with moisture to form a flexible foam and is NSF/ANSI/CAN 61 approved for contact with potable water.
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