Structural pipe rehabilitation (CIPP)

Structural pipe rehabilitation (CIPP)

Structural pipe rehabilitation using liner technology (CIPP – Cured In Place Pipe) allows the creation of a new pipe inside the existing one, without the need for excavation or demolition.

This method is used when the pipe shows significant deterioration, loss of integrity, or requires structural reinforcement, providing a long-lasting and technically proven solution.

What is CIPP rehabilitation

The process involves inserting a flexible liner, typically made of fiberglass and impregnated with resin, into the existing pipe. Once in place, the liner is cured (hardened) using UV/LED light, forming a continuous new pipe.

The result is an independent structure, fitted to the interior of the original pipe, which:

• restores structural integrity

• eliminates cracks and infiltration

• improves internal flow conditions

• significantly extends the service life of the system

When this solution is suitable

CIPP rehabilitation is recommended in situations such as:

• pipes with cracks, breaks, or material loss

• systems with recurring infiltration

• ageing networks with advanced deterioration

• need for structural reinforcement

• cases where traditional replacement is complex or impractical

It is commonly applied in vertical stacks, branch lines, and buried pipes, both in buildings and external networks.

Advantages of no-dig rehabilitation

CIPP allows intervention without invasive works, offering several advantages:

• no excavation or demolition required

• reduced intervention time

• minimal disruption to buildings and surroundings

• in many cases, the system can remain operational

• lower indirect costs compared to traditional replacement

Structural solution with long service life

Unlike non-structural methods, CIPP creates a new structural pipe with high mechanical and chemical resistance.

Depending on materials and conditions, this solution can provide a service life of several decades and is widely used in both public and private networks.

Compatibility with different pipe materials

CIPP technology can be applied to a range of existing pipe materials, including:

• PVC

• clay

• cast iron

• concrete

It is also adaptable to different configurations, including vertical, horizontal, and buried pipes, provided that proper access and preparation conditions are met.

Importance of preparation and inspection

The success of CIPP rehabilitation depends on proper preparation. Before installation, it is essential to:

• carry out a CCTV pipe inspection

• clean and clear the pipe

• remove intrusions or obstacles

• assess the structural condition of the system

This ensures proper liner installation and a reliable final result.

CIPP vs other solutions

Structural liner rehabilitation differs from other approaches by creating a new load-bearing pipe. In cases of minor leaks or localized defects, non-structural solutions such as epoxy lining may be sufficient.

However, when structural deterioration is present or a long-term solution is required, CIPP is the recommended method.

A technical solution for pipe rehabilitation without excavation

CIPP is one of the most advanced methods available today for restoring pipelines, allowing complex problems to be resolved without invasive works.

If you need to assess the condition of your system and determine the most appropriate solution, we can carry out a technical inspection and recommend the best approach for your case.