A building restoration contractor experienced water leakage into the mechanical room from 2” diameter holes which contained glycol lines running through them, to melt snow on a vehicle ramp.

Working within the mechanical room, 5/16” break lines were placed at a depth of 8” into the holes. These holes were then sealed with hydraulic cement, and when cured water was then introduced through the brake lines into the holes. Polyurethane resin was then injected into the holes, filling the holes and forming a semi-rigid foam barrier, preventing further water leakage.

Chemical grout injection using our MME Universal Resin, MME Universal Accelerator, 5/16” brake lines, and two grout injection pumps were used to fill the holes in the wall. The technique eliminated further water leakage into the mechanical room.