CIPP lining - structural pipe rehabilitation

A new pipe inside the existing one

CIPP (Cured In Place Pipe) is a rehabilitation technology that creates a new structural pipe inside the existing one, without excavation or replacement.

In simple terms: a new, continuous pipe is formed within the old one.

It is one of the most widely used rehabilitation methods worldwide, both in buildings and underground networks.

How CIPP lining works

The process involves inserting a resin-impregnated liner into the existing pipe, which is then cured in place.

After curing, a new structure is formed with its own mechanical behavior.

This allows:

• creating a continuous, watertight pipe

• eliminating cracks and infiltration

• restoring structural integrity

• improving internal flow

Without opening walls, floors or trenches along the pipeline.

Materials used

The performance of CIPP depends heavily on the materials used.

Modern systems typically include:

• fiberglass liners with high mechanical strength

• technical resins (epoxy, polyester or vinyl ester)

• controlled curing systems (UV or LED)

This combination creates a durable and structurally reliable pipe. :contentReference[oaicite:3]{index=3}

Applicable pipe materials

CIPP is highly versatile and can be applied to:

• PVC pipes

• clay pipes

• cast iron

• concrete pipes

• mixed material systems

As long as access and continuity are sufficient, the method adapts well to different conditions. :contentReference[oaicite:4]{index=4}

Different application scenarios

CIPP can be used in multiple contexts:

• vertical stacks

• lateral connections

• buried pipelines

• stormwater systems

It can be applied as full-length lining or sectional rehabilitation depending on the situation. :contentReference[oaicite:5]{index=5}

When CIPP is the right solution

This technology is suitable when:

• the pipe shows structural deterioration

• there are cracks, leaks or material loss

• damage extends over several meters

• excavation is not desirable

In cases of full collapse or severe deformation, preliminary intervention may be required.

Real advantages

In practice, CIPP allows:

• avoiding invasive works

• reducing intervention time

• minimizing disruption

• extending pipe life by decades

In many cases, it is the only viable solution without replacing the infrastructure.

Limitations — important to understand

Despite its advantages, CIPP is not universal.

For example:

• it does not correct misalignment or settlement

• it cannot replace fully collapsed sections

• it requires proper pipe preparation

It is a structural solution — but only when applied in the right context.

Diagnosis before solution

At REVIPOX, we always start with CCTV inspection to understand the real condition before recommending CIPP or any other method.

Contact us

If you are considering pipe rehabilitation, we can assess your situation and guide you.

Call +351 930 650 707