What is CIPP Lining?

Cured-In-Place Pipe (CIPP) lining is a trenchless rehabilitation method that enables us to renew damaged pipelines without full excavation. A flexible liner, saturated with resin, is inserted into the existing host pipe and then cured in situ (by heat, steam, or UV) to form a seamless, jointless “pipe within a pipe”.

Because it’s trenchless, CIPP offers huge advantages in minimising surface disruption, shortening project time, and lowering reinstatement costs, especially in urban or sensitive locations.
 

 How It Works

  

1. CCTV Inspection & Assessment - We begin with a full CCTV survey to map defects, blockages, root intrusion, and the general condition of the host pipeline

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2. Pre-Cleaning & Preparation - High-pressure water jetting, mechanical cutters, or root removal tools clear debris, scale, and intrusions so the liner can properly bond.

 

3. Liner Insertion - A resin-impregnated felt or fibreglass liner is inverted or pulled into the host pipe, positioning it precisely along the damaged length.

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4. Curing / Polymerisation - The resin is cured (hardened) using one of several techniques (hot water, steam, ambient heat, or UV) to form a rigid structural lining.

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5. Lateral Reinstatement - Robotic cutters reopen any service laterals or side connections, restoring full connectivity without digging up the surface.

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6. Final Inspection & Testing - Another CCTV run and pressure/leak testing verify the integrity, alignment, and continuity of the new liner before returning the system to service.

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Benefits & Advantages

 

Minimal Disruption - Because we only need access points (e.g. manholes), there is no need to dig trenches across roads, pavements or open landscape.

 

Cost Savings - Lower excavation and reinstatement costs, shorter project durations, and avoidance of surface disruption often make CIPP more cost-effective overall than full dig-and-replace methods.

 

Extended Service Life - A properly installed CIPP liner can deliver decades of service (50+ years is typical in many designs).

 

Hydraulic Efficiency - The smooth interior of the liner reduces friction, improving flow performance and often increasing hydraulic capacity.

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Structural Strength & Leak Control - The new liner can restore or even enhance the structural integrity of the host pipe and prevent infiltration or exfiltration through cracks or joints.

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Typical Applications & Suitability

 

CIPP lining is versatile and applicable in many settings:​

• Gravity sewers, stormwater drains, culverts

• Industrial pipelines

• Pressure pipelines (with appropriate design)

• Long runs from a single access point

• Situations where surface disruption must be minimised

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Why Choose Fortis for CIPP Lining

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• Our team has deep experience in trenchless rehabilitation

• We use high-spec liners and resins calibrated to site conditions

• Adhering to strict quality assurance and testing protocols

• Maintain full project transparency from survey to handover

• Combine technical expertise with safety and environmental stewardship

 

Let us help you renew your pipeline system efficiently, reliably, and with minimal disruption.