Soccer player with insulbar LI jersey
The new star taking centre stage!

insulbar LI – the efficient insulating profile for the middle insulating segment

insulbar LI is a new thermal insulating bar in the high-efficiency profile category which intelligently combines energy efficiency and cost-effectiveness. With insulbar LI, it is possible to reduce Uf values cost-effectively even in the middle insulating segment and improve the insulation effect of the relevant window systems.

The insulating profile from thermally improved material

insulbar® LI insulating profile with close-up of the smooth shell and the foamed core

The reduced thermal conduction capacity of insulbar LI is achieved by means of a special manufacturing process in which glass fibre-reinforced polyamide is foamed. Compared with standard profiles made from solid polyamide, the lambda value of insulbar LI can – in optimum products – be reduced from 0.3 W/mK to 0.21 W/mK*. This value makes it possible to achieve smaller installation depths while maintaining the same Uf value, or to optimise the Uf while keeping the installation depth the same.

* Product optimum

Optimise and vary window systems with ease

Existing window systems can easily be thermally improved through a switch to insulbar LI and/or be offered in additional variants with different Uf values – without further system or process changes and without any difference in visual appearance or quality. Depending on the original system, a switch to insulbar LI makes it possible to reduce the Uf values by around 0.1 W/m2K.

Diagram with Uf improvement or installation depth reduction

insulbar LI at a glance:

  • Combines energy efficiency and cost-effectiveness
  • Low thermal conduction capacity
  • Permits lower Uf values or smaller installation depths
  • Optimum strength
  • Ideal for improving existing systems
  • Consistently high standard of tested quality


For more information on the insulbar LI profile, see our brochure.