Buried Pipeline Rehabilitation — Trenchless and Long-Lasting Solutions

CIPP rehabilitation of buried pipelines

CIPP rehabilitation of buried pipelines allows the restoration of sewer and stormwater pipes without excavation or trenching.

This method is particularly suitable for external networks, where traditional replacement would require extensive works, high costs, and significant disruption to the surrounding area.

Common problems in buried pipelines

Buried pipelines are exposed to various conditions over time, and it is common to find:

• cracks and pipe fractures

• infiltration or exfiltration into the surrounding soil

• deformation or ground movement effects

• root intrusion

• displaced or open joints

• material loss in ageing pipes

These issues can compromise the performance of the system and, in some cases, affect ground stability or lead to water infiltration into nearby structures.

How CIPP rehabilitation works

The process involves inserting a fiberglass liner impregnated with resin into the existing pipe, which is then cured using UV/LED light to form a continuous new pipe.

After curing, the result is an independent structure within the original pipeline that:

• restores structural integrity

• eliminates cracks and infiltration

• reinforces weakened sections

• improves internal flow conditions

This method allows long sections of pipe to be rehabilitated in a continuous and controlled way.

Durability and structural solution

CIPP rehabilitation of buried pipelines allows the system to gain an extended service life of 40 to 50 years, creating a new pipe with high mechanical and chemical resistance.

It is a structural solution widely used in both public and private networks, with proven long-term performance.

Advantages of no-dig rehabilitation

Using CIPP in buried pipelines offers several advantages:

• eliminates the need for excavation

• significantly reduces construction time

• avoids damage to pavements, landscaping, and infrastructure

• minimizes indirect costs associated with trenching

• allows long sections to be rehabilitated with limited access

This makes it particularly suitable for urban environments or areas with difficult access.

When to choose CIPP rehabilitation

This method is recommended when:

• the pipeline shows structural deterioration

• infiltration or exfiltration is present

• long sections require rehabilitation

• traditional replacement is complex or costly

The choice of solution should always be based on a detailed technical assessment.

Preparation and inspection

Before installing the liner, it is essential to carry out:

• CCTV inspection of the pipeline

• complete cleaning and descaling

• removal of roots or intrusions

• structural condition assessment

Proper preparation ensures the quality of installation and long-term performance.

Application in different contexts

CIPP rehabilitation of buried pipelines can be applied in:

• residential sewer networks

• stormwater drainage systems

• condominium collectors

• industrial and commercial infrastructure

As long as proper access is available, the intervention can be carried out efficiently and in a controlled manner.

A structural solution for buried pipeline rehabilitation

Replacing buried pipelines often involves complex and costly works. CIPP rehabilitation provides a technical solution by restoring the functionality and strength of the existing pipe, creating a new pipe inside without excavation.

If your network shows signs of deterioration or infiltration, we can carry out a technical assessment and recommend the most appropriate solution.