Trenchless Pipe Repair

Bringing Technology Underground

Pipes often fail or need repair due to the fact that pipes made of clay, orange burg, asbestos, wood, cast iron and other materials are past life expectancy. This leaves the pipe prone to blockages, corrosion, deterioration, cracking and collapsing.

Gremillion Mechanical’s Trenchless Pipe Lining Service allows us to repair most sewer or drain pipe with little or no excavating and without replacing the old pipe, as was traditionally the case. Instead, the old pipe is lined, creating a brand-new pipe within the old one.

Using the Cured In Place Pipe Process (CIPP), a resin-saturated felt tube made of polyester, fiberglass cloth or a number of other materials suitable for resin impregnation, is inverted or pulled into a damaged pipe. Once the resin is installed it cures in the existing damaged pipe and assumes its shape.

Our methods and state of the art equipment enable us to provide lower costs, shorter time for repair, less inconvenience to business owners, and less chance of damage to other utilities and the surrounding environment than conventional dig and replace methods.

Liner Comparison Video Before and After


  • Competitively priced to traditional methods
  • Repairs are permanent and meet strict industry standards
  • Installation can be completed under sidewalks, driveways, pavers, parking lots and buildings
  • Liner often installed through an existing access point
  • Provides a smooth interior with no joints
  • Maximizes flow
  • Increases structural strength of existing pipes
  • Lining can be positioned in all or part of the compromised pipe
  • Prevents root intrusion and stops leaks
  • Industrial, Commercial and Residential applications
  • Materials are guaranteed for 50 years
  • Minimal footprint due to self-contained system housed in 20 ft. trailer

How It Works

Gremillion Mechanical begins with installation prep where a 3-4 man crew cleans the pipeline, performs a video inspection of pipeline, and transfers findings and measurements to Field Report. The installation continues as follows:

Step 1 - Televise the pipeline
Pipeline is inspected with camera to find problem.

Step 2 - Clean the pipeline
Pipeline must then be cleaned out to remove roots, dirt, debris and any potential objects that could disrupt lining.

Step 3 - Take measurements
Measurements of the pipelines diameter, depth and length are taken. The liner and calibration tube is then cut on the job site according to acquired measurements.

Step 4 - Mix & Measure Resin
Resin is also measured and mixed according to the acquired measurements.

Step 5 - Pour into liner
The resin is then poured into the liner and rolled or " wet out" many times to ensure complete impregnation of resin to liner.

Step 6 - Load into inverter
Impregnated liner and calibration tube is then loaded into the inverter.

Step 7 - Insert into existing pipeline
The liner is then inserted into the existing pipe using directional hoses and inversion heads. These ensure proper insertion.

Step 8 - Invert with air pressure
Air pressure then inverts inside out allowing resin to bond and seal with existing host pipe. The calibration tube acts as a balloon to keep the liner in place as it cures.

Step 9 - Ready for service
Once cured, the calibration tube is removed and the pipe is ready for service.

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