Repair pipe infractions, cracks, and corrosion with
manhole to manhole cured-in-place pipe lining!
Are you observing pipe deterioration caused by years of usage, increased line stress, or accidental strikes? We can repair defective sewer mains from manhole to manhole! Our team repairs 3" to 42" diameter pipes with cured-in-place lining (CIPP). Here are the steps to a CIPP pipe repair:
A clean sewer or sanitary line makes it easier to repair a pipe trenchlessly. The pipe liner will adhere to the wall without any issues in a clean pipe.
Before trenchless pipe repair, our team will use hydro jetting to remove blockages, build up, and grease.
If the pipe is located within a roadway, traffic control services will can be provided by Trinity Subsurface, LLC for site safety.
A robotic crawler traverses the cleaned sewage/storm pipe to determine where the pipelining will be placed.
CCTV pipe inspection is an efficient way to find, pinpoint and mark pipe defects including cracks, corrosion, and infiltration.
Inspecting the pipe can determine the exact amount of materials needed for new trenchless pipe lining.
A new liner is installed into a defective host pipe. This process uses air pressure to push the liner from one access point to the other end.
Trinity ensures that all liners are oriented correctly and are fully expanded to the wall of the pipe. The lining process fills all voids or defects in the host pipe.
Once a liner is correctly positioned throughout the host pipe, the UV curing process begins. An ultraviolet light train device is deployed into the lined pipe.
The UV light initiates the curing process by emitting blue light. This causes the resin in the trenchless pipe liner to harden and form a new pipe within the old one.
The UV light train's movement is carefully controlled to ensure complete curing of the new liner. Cameras on the UV light train allow installers to monitor the pipe liner curing in real-time.
Once the curing process is completed, a CCTV camera assesses the quality and integrity of the installed liner. The operator confirms the locations of lateral connections, branches, or junctions for the lateral reinstatement process to begin.
Any lateral connections or service lines that were covered by the lining process are reopened. This is typically done using a robotic cutter that precisely cuts new openings without damaging the CIPP repair.
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A robotic CCTV pipe inspection camera will be sent through the newly CIPP-lined pipe for final inspection.
The post-repair inspection ensures there are no issues with the newly installed CIPP pipe and gives our clients a fully documented report on the final repair!
Our pre and post-pipe inspection report can examine damaged and repaired pipes. Need more information on your sewers and pipes? Reach out for a CCTV deliverable sample to see how user-friendly reporting can be helpful for contractors, engineers, and more.
Preliminary step: Use hydro jetting to flush out obstacles to examine pipe conditions and prepare a repair.
Learn More >Preliminary step: pinpoint isolated structural defects for repair.
Learn More >
Manhole to manhole pipe lining is a trenchless solution to fixing damaged pipes. No digging or excavation is required as the pipe is repaired from the inside out with an interior lining.
Cured-in-place pipe lining restores structural integrity by sealing joints, cracks, or missing pipe sections and eliminates root intrusion. The curing process provides no space between the pipe and repair that could cause leakage.
The process avoids major surface restoration and can be completed faster than a fully excavated pipe replacement / repair.
Manhole to manhole lining is a more cost-effective solution for municipalities and commercial facilities with isolated sewer line problems. Not only does manhole to manhole lining prevent costly and unnecessary repairs, but it can also be completed as quickly as one day.
Pipe lining material is very thin, but strong. As a result, there is very little shrinkage compared to the original diameter of the repaired pipe to keep up with flow capacity.
Trenchless pipe liner forms a structural, permanent waterproof repair that seals all types of pipe against infiltration and exfiltration.
A finished pipe point repair will end up stronger than the original pipe as reinforcing material for a long-lasting repair. The repair has a superior bond to the existing pipe equally in wet or dry conditions.
CIPP is how a failing pipe gets replaced without being dug up. A resin-saturated liner is pulled or inverted into the host pipe, then cured in place to form a new pipe inside the old one. The liner bonds to the existing wall and seals every joint, crack and missing section along its length.
Once cured, the liner is structural. It carries load on its own, which means a host pipe that has lost its integrity does not need to be sound for the repair to hold. It also ends root intrusion permanently, because there is no longer a joint for a root to enter.
The liner is thin relative to the pipe it lines, so the finished diameter is close to the original. In practice the smoother wall usually offsets the small loss in cross-section, and flow capacity holds.
Trinity lines manhole to manhole for full runs, and uses sectional point repair where only one length of pipe has failed.
There are three ways to cure a liner in place: leave it to set at ambient temperature, heat it with steam or hot water, or cure it with ultraviolet light. Trinity uses UV.
A steam cure heats the entire mass of a felt liner and holds it at temperature until the resin sets, which takes hours and requires a boiler on site. UV works differently. A light train is drawn through a glass-fiber liner at a controlled speed, and the resin cures as the light passes. The cure follows the train rather than waiting for the whole pipe to come up to temperature.
Three things follow from that, and they are the reasons we standardized on it.
The cure is watched as it happens.
Cameras on the light train let the crew see the liner curing in real time and control the speed against what they are seeing. A steam cure is monitored by temperature and time. You find out how it went when you put a camera in afterward.
The liner arrives pre-impregnated.
UV liners are saturated with resin under factory conditions, so the resin ratio is controlled before the liner reaches the site. Wet-out does not happen in the field, in the weather, on the day.
The wall is thinner for the same strength.
Glass fiber is stronger than felt, so a UV liner reaches the required structural rating at a thinner wall. Less wall means less lost diameter, which matters most on smaller pipe where a small loss of cross-section is a real share of the flow.
Cure times are shorter, and there is no boiler and no heated water to discharge at the end of it. On a live site, that is often the difference between one day of disruption and two.
Lining is priced by the job rather than by a rate card, because the variables that drive cost are site-specific. The main ones are length of the run, pipe diameter, how much cleaning the line needs before it can be lined, whether flow has to be bypassed while the liner cures, and how hard the access points are to reach.
The comparison that matters is not lining against doing nothing. It is lining against open-cut replacement, and that is where trenchless tends to win on total cost rather than just on line item. Excavation brings surface restoration, traffic control, spoil handling and the cost of a site that is out of service while it is open. A lining crew works from the existing access points and a run can often be completed in a day.
Trinity provides a written proposal for each scope, priced against what the camera actually shows rather than an assumption about the line.
For municipalities and facility owners working through a system rather than a single failure, rehabilitation is usually a sequence: inspect and code the system to NASSCO standards, rank segments by condition and consequence, clean what needs cleaning, then line or repair what the data says to prioritize.
Trinity runs each of those steps, which means the inspection data, the cleaning and the repair do not have to be coordinated across three contractors or reconciled between three reporting formats.
Rated 4.9 out of 5 from 223 Google reviews.
“Their quote was provided promptly, and the technician was punctual, professional, and well-prepared. The work was clearly explained throughout the process.”
Frank B., Google review
“Trinity crew did a thorough job. Great field guys.”
John O., Google review
“Third time working with Trinity. Expertise, determination to find the problem and solution, resulting project summaries all outstanding. Highly recommend Trinity!”
Nancy T., Google review
