Chemical Grouting NASSCO & ICGA Pressure Testing and Grouting Sewer Joints, Laterals and Lateral Connections. Using the packer method with solution grouts. Test/Seal Truck Lateral Grouting Trenchless rehabilitation, inflatable pipe plugs, grouting packers to stop infiltration in mainline and lateral sewer line. Grouting Permeates anywhere water can travel. Cures in controllable time frames. Stops infiltration into manholes, sanitary and storm sewers, mainlines, joints, laterals, tunnels, mines and other underground structures by stabilizing external substrates.