A damaged sewer does not automatically mean that the garden or driveway has to be dug up. For many types of damage, trenchless rehabilitation is possible. The pipe is repaired or reinforced from the inside. For homeowners and property managers, this is often faster, cleaner and easier to budget than conventional open construction.
When is trenchless rehabilitation suitable?
Typical damage includes cracks, open joints, leaks, root intrusion and corrosion. The condition of the pipe is decisive. That is why a CCTV inspection comes before rehabilitation. With the camera, we see where the damage is, how large it is and whether the pipe is stable enough for a liner method.
Not every defect can be repaired without excavation. A completely collapsed sewer or severe misalignment may require open construction. An honest assessment is therefore part of every plan.
The liner method
With a liner, a resin-impregnated sleeve is inserted into the existing pipe. It is then pressed against the pipe wall using pressure or heat and cured. This creates a new, load-bearing pipe inside the old one. The rehabilitation protects against further leaks and significantly extends the service life of the line.
The liner is tailored to the pipe diameter and the damage. Beforehand, the pipe is cleaned and milled so the surface is free. After curing, we inspect the result again with the camera.
The short liner
A short liner is the right solution for individual damaged sections. Instead of lining the entire pipe, only the damaged section is repaired. This saves material and time. Short liners are particularly suitable for cracks, open joints and smaller leaks. A camera inspection is also the first step here.
The process in seven steps
- Assessment and CCTV inspection of the pipe.
- Cleaning and, if necessary, milling of the damaged area.
- Selecting the right liner or short-liner system.
- Measuring and preparing the material.
- Inserting the liner into the pipe.
- Curing and checking with the camera.
- Documentation with photos, a protocol and a final report.
The benefits
Trenchless rehabilitation is usually faster than an open construction site. Garden, paving, driveway and planting remain untouched. Operations can often continue, and the work causes less noise and dirt. For property managers, it is also important that the intervention remains manageable and the documentation is complete.
What does sewer rehabilitation cost?
Costs depend on length, diameter, the type of damage and the method. A short liner is usually cheaper than a full liner along the entire pipe. Preparation, cleaning and documentation are added. Flat-rate prices without an inspection would be unrealistic. We calculate after the camera inspection and provide a fixed price.
What property managers should consider
In larger residential complexes, rehabilitation is rarely an individual decision. Property managers need to coordinate the work with owners, tenants and possibly the municipality. An early assessment helps to plan the scope realistically and avoid special assessments. Clear documentation, fixed contacts and a schedule that takes the use of the apartments into account are also important. We coordinate the work so that access routes and sanitary areas are affected for as short a time as possible.
Conclusion
Trenchless sewer rehabilitation is the best choice for many types of damage. It protects the garden, shortens construction time and safeguards the pipe in the long term. Whether a liner, short liner or another method is suitable is shown by the camera inspection. AVA SERVICE in Herzogenrath works for homeowners, property managers and municipalities in Aachen and the surrounding area.
