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Dörr-Tiralbit ALGV-4K

Oxidized bitumensheet with fiber reinforced glass fleece and polyester-aluminumlaminate reinvorcement in a thickness of 3.8 mm.


The aluminumlaminate reinvorcement has a very high vapor barrier value (sd-value approx 1.500 m).


The surface texture upside has fine granule and the downside is foil-laminated.

The bonding is done by means of torching or welding procedure.



Dörr-Tiralbit ALGV-4K is used as a vapor barrier sheet mainly for flat roof constructions (Warm-, Duo Roof) and as temporary construction waterproofing.

  • Coating

    Oxidized bitumen
  • Reinforcement

    Fiber reinforced glass fleece + polyester aluminumlaminate
  • Surface texture upside

    Fine granule
  • Surface texture downside

  • Thickness

    3.8 mm
  • Width/length of the sheet

    1 x 10 m = 10 m²
  • ALGV-4 according to ÖNORM

    B 3666

Fields of Application

- Vapor barrier sheet