Affordable Alternative to Trenching

Cured in place pipe is an alternative to trenching. Replacing a sewer line is an expensive proposition. Traditional sewer repair requires specialized heavy trenching equipment, and it is virtually impossible to trench without destroying paved surfaces and landscaping. Pavement repair can cost tens of thousands of dollars, and restoring landscaping can take years. Cured-in-place pipe (CIPP) offers a less expensive, less destructive approach to rehabilitating broken sewer lines. It is ideal for sewer repairs in Kennewick.

Instead of trenching to access broken sewer lines, CIPP uses the broken line as a form to create a seamless, corrosion-resistant replacement. CIPP technology has been in use for about 45 years.

A CIPP repair is relatively simple. Video inspection helps to identify breaks and obstructions in the line. Once the pipe is clear, a resin-saturated liner is brought into the pipe from an existing access point – usually a cleanout. Air pressure or water pressure “inverts” the liner to ensure that the fabric sits tightly against the walls of the original pipe. It also removes wrinkles in the liner that might otherwise cause drainage problems.


Curing pipe can take up to 36 hours

Once the liner is in place, steam, hot water or UV light is used to cure the liner. The resin can also air cure. The curing process can take between 1 hour and 36 hours, depending upon the resin and the curing method.

Once the resin is cured, the repair crew will clear the small-diameter “lateral” connections to restore access to the pipe, and the pipe can be put back in service. The resin does not bond to the existing pipe. In fact, the typical contents of a sewer prevent a bond from occurring. This leaves a little space between the original pipe and the resin liner. To ensure that water does not invade this space and cause new problems, a special material that absorbs and holds water fills the space between the old and new pipes.

CiPP repair can extend the life of a pipe by 50 years or more

The newly hardened liner can extend the life of a broken pipe by as much as 50 years. It is important to remember that CIPP repairs must be hydro jetted to remove clogs and obstructions. They cannot be snaked or mechanically cleared. Pipes that have completely collapsed are not good candidates for CIPP repairs, but the collapsed area can be repaired traditionally, and then lined with CIPP.

Trenchless repairs have many benefits. Aside from limiting the impact on the outside of a property, trenchless repairs can eliminate tree root intrusions, a major cause of sewer lateral damage. It can also be used on pipes that have multiple bends, and it can be used to selectively repair only the areas of a pipe that are damaged. It also immediately reverses pipe failures and corrects problems caused by untreated sewage that escapes into groundwater from a broken pipe.

If you would like more information about CIPP repair in Kennewick, Richland or Walla Walla, please call us at Fuse Heating and Air Conditioning at (509) 396-9774.