One of the most widely used pipeline rehabilitation methods for rehabilitating aging sewer and storm drains is the cured-in-place pipe (CIPP) lining method. Cured-in-place is described as the process for in-place rehabilitation or reconstruction of existing pipelines and conduits through the installation and curing of a resin impregnated polymer coated flexible felt tube. The CIPP process begins by thoroughly cleaning the existing pipeline, removing any debris or protruding laterals and noting locations of existing lateral connections. Sewer flows are diverted with bypass pumping systems, if necessary.

Liner. The liner consists of an absorbent, flexible, industrial grade felt tube with an impermeable membrane on the inside surface. The diameter and length of the tube are custom made to fit each project. This makes CIPP an ideal method for odd-sized or odd-shaped pipes such as old brick sewers. HydroTech will custom engineer each liner to meet the systems requirements.

Resin. The resin is what hardens and ultimately gives the CIPP its strength. Polyester and Vinylester resins are available and each has different properties. HydroTech can help you determine which resin is appropriate for your specific needs.

HydroTech offers a wide range of pipeline rehabilitation options. Our lining systems provide semi-structural to fully structural systems for pipe sizes from 6 inches in diameter and greater.

Our cured-in-place (CIPP) lining systems provide quick, economical alternatives to replacing pipelines by traditional "open-cut" methods. Our crews install liners that provide an engineering life of over 50 years; they also improve flow capacities and co-efficient friction, as well as reduce pumping and maintenance costs.