Advanced trenchless sewer repair and structural rehabilitation
Expert sewer rehabilitation and repair services in Nantes
Yes — through trenchless internal pipe rehabilitation.
Our teams tailor the solution to your site, using trenchless, non-invasive techniques without excavation or ground disruption.
We have developed an advanced pipe lining method for vertical wastewater and stormwater stacks in buildings.
This solution can also be applied to horizontal pipeline systems.
The liner fully restores pipe watertightness.
It also provides structural reinforcement, forming a continuous, uniform 3.5 mm structural liner inside the pipe, with an estimated lifespan of 50 years.
- Camera inspection of the pipe to assess its overall condition
- Mechanical descaling using the PICOT cleaning system
- High-pressure water flushing with a sewer cleaning vehicle
- Post-cleaning video inspection to verify cleaning quality and perform robotic cutting of any intruding connections if required
- Continuous internal lining rehabilitation
- Robotic reopening of wastewater branch connections
- Final CCTV inspection with a comprehensive report, including precise identification of each stack (one stack = one inspection report). The network is fully reinstated the same day.
A long-lasting solution tailored to your needs
The seamless, highly flexible, knitted epoxy liner restores:
- complete watertight integrity to the existing pipe
- full structural strength to the system, ensuring long-term reliability, even if the original pipe deteriorates externally due to weather exposure.
Unlike resin spray coatings, which only seal the interior surface, this liner provides genuine structural reinforcement.
Its performance makes it an ideal rehabilitation solution for damaged pipelines, including those with bends of up to 90 degrees.
The epoxy liner provides a consistent 3.5 mm thickness throughout the pipe. By contrast, resin spraying cannot ensure uniform thickness due to the lack of controlled flow and mechanized application.
Pipelines made from different materials behave differently over time (varying expansion rates, PVC repairs, etc.). The liner’s mechanical structure and bonding properties ensure long-term stability and durability.
Ortec Environnement Nantes operates 24/7
How does sewer repair work with our experts?
Once we’ve carried out a full camera inspection of your network, our experts will evaluate the most effective strategy for rehabilitating your pipelines.
If the wear is not too severe, we may recommend a non-invasive repair (such as pipe lining or repair sleeves). However, if the pipes are too deteriorated or if leaks have already been detected, our team will guide you through the process of repairing the affected pipes.
A final video inspection will confirm that the repairs have been successfully completed.
Discover our career opportunities
Whether you’re a homeowner, local authority or housing provider, we support both pipeline renovation and full sewer system repair. Contact us today to find the best solution for your network.
They trust us!