Trelleborg Pipe Lining method

The method

The Trelleborg Pipe Lining method is a cured-in-place pipe lining (CIPP) process used in trenchless pipe and sewer rehabilitation ("no-dig" applications). The start or end point can be a manhole, inspection hole or cleaning eye or a open cut pipe. It is possible to install the liner along channel diversions or invert bends at an angle up to 90 degrees. The basic condition is that there is enough space to place the inversion fitting of the inversion unit or water rig.

Drain Liner

Technically fully developed and proven in practice

The rehabilitation of non-man-entry sewer lines with full-length CIPP liners has established itself as a sophisticated economical and technical alternative to traditional repair techniques involving digging up the ground.

This method is meanwhile a proven and reasonable-cost solution for the basic renovation of service lines in need of repair and thus to extend their service lives for another life cycle of at least 50 years.

A basic condition is that the materials used in CIPP operations are suitable for this type of application and that the installation process meets stringent quality criteria.

Drain Lining Scheme 1

The inversion process

This process uses a flexible tube (= liner) of corrosion-proof synthetic and/or glass fibres, which is wetted inside with reaction resins and introduced into the host pipe run through a manhole, access pit or access eye with the help of an inversion unit.

During this process the liner tube is inverted, so the resin wetted liner side (inside before inversion) is turned outside, away from the effluent and forced against the pipe wall

Drain Lining Scheme 2

The curing process

The resin wetted, inverted liner tube remains under pressure from the filled-in air of water until the resin is cured.

The resin-impregnated liner in the pipe section can be cured with hot water, steam or at ambient temperatures, depending on the requirements of the resin system used. The duration of the curing phase is largely dependent on the resin type and curing method you select.

Drain Lining Scheme 3

The rehabilitation result

After final cure of the reaction resin, the liners form a tight positive and frictional fit with the host pipe wall. 

The pipe-in-pipe system so obtained becomes an integral part of the host pipe. It forms a seal against infiltration and exfiltration, and fully restores and meets the structural and hydraulic requirements for the future. There is only a minor reduction in nominal pipe diameter.

Application Areas

Pipe run direction

Manhole to Manhole application

  • From the start point to the end point
  • From the start point to the end point by running through an intermediate manhole
  • From the start point into a sewer pipe run over a defined length without any further manhole or access pit needed
  • In case of laterals: either from a lateral start point down to the lateral/main interface or from a main line start point down to the main/lateral interface

Circular, egg-shaped and special sewer sizes

  • concrete
  • steel
  • reinforced concrete
  • clay
  • fibrocement 
  • GRP, PVC, PE, PP 
  • cast iron

The cross section of the host sewer meets the process requirements and the structural stability criteria.

Applicable Damages

  • Leaks with or without groundwater infiltration or exfiltration at pipe joints, pipe walls, junctions, transitions etc.
  • Displaced pipes, cracks and debris, ruptures
  • Plugging of lateral connections no longer needed
  • Mechanical wear
  • Corrosion


  • extreme pipe or joint offsets
  • broken or collapsed pipes
  • large cross-sectional reductions in conjunction with bedding problems
  • longitudinal cracks at pipe connections

Pipe Diameters

DN 30 - DN 1200 | 1,2" -  64"

Connection Angles

30° to 90°


Technical Approvals, Patents, Quality Standards

ASTM Logo black

International Standards

In conformance with worldwide standards

UE-Zeichen Z-42.3-375

External Quality Control


European Standards

In confirmance with European standards

UE-Zeichen Z-42.3-466

External Quality Control


Quality Management


UE-Zeichen Z-42.3-468

External Quality Control

DIN ES ISO 14001

Quality Management

DIN EN ISO 14001


More Product Details

DrainLining Product Info (2020)


Download (pdf)

Installation under difficult conditions

Case Study DrainLining method  

Download (pdf)

Testing Trelleborg Epoxy FC30 in a Bank building

Case study  

Download (pdf)

Case Study Trelleborg UltraFlex Liner

Case study DrainPlus Liner 2.0  

Download (pdf)

Related products/information

Additional technical Equipment, Consumables, Support 

LCR-B Training

Training on theory and practice

Good practice-oriented training of our installers is a major concern for us and a component of our quality management approach.

Only qualified professionals with training are permitted to use our systems. Qualified personnel will be issued with a training certificate by Trelleborg Pipe Seals.


Method descriptions 

We place particular emphasis on teaching the correct practical application in conformity with the technically approved requirements, entirely documented in our user manuals/method descriptions, which are the basis for the official technical approvals.


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for the epros®DrainLiner Method DN 100 to DN 600 with resin system EPROPOX HC120 (Comp. A+B)
for the epros®DrainLiner Method DN 100 to DN 400 with resin system EPROPOX HC60 (Comp. A+B)
for the epros®DrainLiner Method DN 100 to DN 1000 with resin system EPROPOX HC2640 (Comp. A+B)
for the epros®DrainLiner Method DN 100 to DN 200 with resin system EPROPOX FC30 (Comp. A+B)