A heat weldable and glass- reinforced, composite rubber membrane with an EPDM core. The underside has a polymer modified bitumen coating, with PE separating film.


  • Fully elastic down to temperatures of -30°C.
  • Resistant to the effects of ozone, UV and infrared radiation without additional surface protection.
  • Resistant to a wide range of environmental chemicals and atmospheric emissions.
  • Compatible with bitumen.
  • Contains no chlorine and plasticizers.
  • Highly slip resistant even when wet.
  • No shrinkage throughout the entire service life.
  • Life expectancy of decades.
  • Recyclable.


  • Loose laid with mechanical fixings.
  • Loose laid with ballast.
  • Fully bonded with hot bitumen.

General information

Uniclass 2015

Pr_25_57_51_66 Polymeric membranesPrimary


J41/115 Single layer reinforced bitumen membrane warm deck roof covering

J41/125 Single layer reinforced bitumen membrane inverted roof covering

J41/135 Single layer reinforced bitumen membrane cold deck roof covering

J41/405 Single layer reinforced bitumen waterproof covering

J42/110 Warm deck roof covering

J42/120 Inverted roof covering

J42/130 Cold deck roof covering

J42/400 Waterproof membrane

Specification data - Polymeric membranes

Product Reference



Fully bonded with hot bitumen

Loose laid with mechanical fixing

Loose laid with ballast

Standard product features

Size (w x l):

1 x 10 m.


3.1 mm ± 10%.


3.5 kg/m².


- Tensile strength to DIN EN 12311-2:

  • Longitudinal: 361 N/50 mm.
  • Transverse: 333 N/50 mm.

- Elongation at break to DIN EN 12311-2:

Longitudinal and transverse: 600%.

- Dimensional stability after six hours at 80°C to DIN EN 1107-2:

  • Longitudinal: + 0.1 %.
  • Transverse: + 0.2 %.

- Fire behaviour to DIN 4102-1:

B 2.

- Reaction to fire to DIN EN 13501-1:

Class E.

- Fire behaviour to DIN 4102-7 and DIN EN 1187:

Resistant to flying sparks and radiating heat.

Third party certifications

  • 06/4329
  • European Technical Approval: ETA-06/0257
  • FM Standard Class Approved: 4470

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