Method: Injection grouting is a method used to fill in cracks, gaps, annular spaces and joints between old piping and new pipe, or a liner, as well as voids in the surrounding soil. Injection grouting is not a structural pipe repair method. It is used in conjunction with repair methods to fill gaps and voids.

Surface preparation: The surface be thoroughly cleaned of all laitance, loose material, oils and greases using mechanical means such as wire brush, shots blasting can be used.

If the bathroom or W/C has leakage, it is checked, after that hole is made with a drill machine. One or more holes and is joined to the pressure grouting machine. Polymer chemical is put with a certain pressure under. So the empty space under the tiles is filled permanently and results in stoppage of leakage.