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  • free shipping of order abobe 299 €
  • Orders made berore 12pm shipping same day

Airtightness Membrane Suppliers Ireland
Pitched Roofing Underlay Supply Ireland

DELTA- VITAXX 75m2 fire resistant breathable membrane


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Highly fire and tear resistant 4 layer reinforced breather roofing membrane.

The 4-layer polypropylene roofing sheet consists of 2 geotextiles on the outside, a polypropylene reinforcement grid and a patented open difusion coat.

Breathable-difusion open:
Thanks to the high vapor permeability (Sd value approx. 0.05 m), DELTA®-VITAXX (PLUS) can be installed both with and without under-ventilation: the diffusion of moisture residues coming from inside through the DELTA®-VITAXX PLUS can be controlled by ventilation evacuated under the roofing.


DELTA®-VITAXX ensures perfect wind resistance, which optimizes the performance of the insulation material.

DELTA®-VITAXX  ensures perfect wind resistance, which optimizes the performance of the insulation material.

High tensile strength:
Thanks to its strong reinforcement mesh, DELTA®-VITAXX PLUS roof underlayment tear strength (450 / 400N5 cm). The geotextile on the top side ensures high tear resistance.


    Technical data 

    Spun-fibre material combined with an inner waterproof layer.

    Fire resistance

    Highly fire resistant,
    B 1 rating (DIN 4102)

    Tear strength

    ca. 450/400 N/5 cm


    DIN EN 13111


    approx. 0.05 m

    Servicetemperature range

    -40 °C to +80 °C


    approx. 160 g/m²

    Roll weight

    approx. 12 kg

    Roll size

    50 m x 1.50 m

    Quality - made in Germany

    "Our products are up to any test."

    Dörken keep setting new standards of quality, offering all-round solutions for roofs and cellars. The outstanding track record of its products, its comprehensive technical knowhow, and its excellent service have made Dörken GmbH & Co. KG one of the leaders in the European market for building materials. For more than 50 years, high-quality laminated sheets for roofs, façades, and cellars have been made in Herdecke under the brand name DELTA®. 

    Rigid quality controls – for sophisticated demands.
    First-class materials, continuously and strictly monitored at every stage of the manufacturing process, guarantee enduring functionality and a long life. For us, quality means that our customers are satisfied and their expectations have been more than fulfilled. This implies constantly checking, reviewing, and improving products and processes. To think everything through down to the smallest detail: having fulfilled this ambition for more than 120 years, Dörken remains a powerful partner of dealers, planners, and craftsmen.

    Those who rely on our products will reap long-term benefits.
    Our promise 'DELTA® protects property. Saves energy. Creates comfort.' may be taken literally. For our system solutions from roof to cellar produce convincing
    results – worldwide. This is because the quality of our products 'made in Germany' is high, our solutions are adapted to practical conditions, products and accessories can be combined to fit exactly, and the service we offer you is excellent right from the start. 

    Made in Germany – to us, more than a mere seal of quality.
    Join all those who benefit from the extreme dependability and lasting functional reliability of our innovative and efficient products of proven Dörken quality which we continuously check and improve in our own test laboratories. And you may not only rely on top-quality materials. For more than 50 years, composite sheets of sustainably good quality for cellars, façades, and roofs have been made in Germany . At our group headquarters in Herdecke as well as in Hagen-Vorhalle, in one of Europe 's leading-edge production facilities for spunbonded cloth. Not for nothing are we market and technology leaders in this field across Europe


    Estimated delivery time 1-3 days