Would you like to work efficiently and safely?

Efficiency and safety were two important criteria when we developed the technique for inverting our fibreglass-reinforced liners. The inversion method requires minimal personal resources compared with other installation techniques and improves personal safety and work environment by minimising the need to work down narrow drains.

How does it work?


Think what you do to invert the sleeve of a sweater that’s inside out.

Our method and our liners work in a similar way. They are manufactured inside out and are inverted during the installation process as they are pressed into the pipe. This is done using compressed air. The majority of the operation takes place from inside your installation vehicle.









When the fibreglass-reinforced liner is fully in place in the pipe, it is pressed tightly to the existing pipe by air pressure.

After this the UV light train is driven into the pipe directly from the vehicle using our ingenious system and the hardening process begins.

All of our liners are hardened with UV light.

The entire installation process takes place whit the air pressure maintained to ensure the best possible fit and reduce the risk of errors and problems.

The technique gives you a very close fit between liner and existing pipe. Any water remaining in hollows in the pipe is pressed out during the installation. This helps ensure that there is no risk of the pipe form changing, and you retain the cross-sectional area of the pipe.

The gap between the existing pipe and the liner is minimal: <0.1% of the diameter.


Advantages of the inversion method

  • Adapted for liners up to Ø500 mm and approx. 150 m long.
  • This method is effective, the installation is quick, saves resources and is environmentally friendly.
  • Produces a minimal gap between the existing pipe and the liner.
  • Safe work environment as very little work has to be done in drains.
  • Because the liner is inflated as it is installed, any remaining water in hollows in the pipe is pressed out. This leads to a very good fit in the existing pipe with a minimal gap.
  • Retains the form and flow of your pipes.


Disadvantages of the inversion method

  • Not suitable for liners over Ø500 mm in diameter or sections in excess of 160 m long.
  • Requires special equipment.