No-dig, or trenchless, methods offer an efficient way to renovate ageing sewer networks made from materials such as clay, metal and concrete.

PVC liners are inserted into existing pipes to form a tight, durable new pipeline inside the old one. This approach significantly reduces surface disruption, shortens installation time and extends the service life of sewer infrastructure — without the need for full excavation.

By avoiding open trenching, no-dig renovation supports lower emissions, reduced traffic disruption and more climate-efficient infrastructure renewal.

Key Reasons to Choose PVC for No-Dig Renovation

MINIMAL SURFACE DISRUPTION

Renovation is carried out from existing access points, reducing excavation, traffic disturbance and impact on surrounding areas.

LOWER CARBON FOOTPRINT

Avoiding large-scale excavation reduces emissions linked to machinery use, spoil transport and road reconstruction.

LONG SERVICE LIFE

PVC liners are designed for structural performance exceeding 100 years under typical underground conditions.

CHEMICAL & CORROSION RESISTANCE

PVC resists aggressive wastewater environments, helping maintain long-term system integrity.

STYRENE-FREE INSTALLATION

Folded close-fit PVC liners are installed using heat and air, avoiding resin curing and associated emissions.

FULLY RECYCLABLE

PVC liners can be mechanically recycled at end of life.
 

COST-EFFICIENT RENEWAL

Reduced excavation and shorter installation times contribute to favourable life-cycle economics.

Climate-Efficient Infrastructure Renewal

Traditional dig-and-replace sewer renovation generates significant emissions due to excavation, material transport and surface restoration.

No-dig PVC relining methods can reduce overall project emissions while delivering equivalent structural performance. Recent assessments presented at international infrastructure conferences show that trenchless PVC renovation can substantially lower total carbon footprint compared to open-cut replacement methods

By extending the life of existing assets instead of replacing them entirely, municipalities can modernise ageing sewer systems in a more resource-efficient way.

Durable Performance Inside Existing Pipes

PVC close-fit liners are inserted into the host pipe and expanded to form a tight structural fit.

The result is a corrosion-resistant, smooth internal surface that restores hydraulic capacity and protects against further infiltration and exfiltration. With high ring stiffness classes and long design life, PVC liners provide dependable structural renewal without the need for disruptive reconstruction.

Safe Installation Process

Folded PVC liners are delivered to site and inserted into the existing pipeline through access points.

Once positioned, the liner is expanded using heat and air to form a tight structural fit. Because no chemical curing agents or styrene-based resins are required, installation can be carried out with reduced odour, lower emissions and improved working conditions compared to resin-based lining systems.

Energy-efficient buildings rely on durable and low-maintenance infrastructure.

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