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    Drainage system DELTA®-TERRAXX ACCESS

    High-performance protection and drainage system with very high water drainage capacity for rapid drainage in the construction of flat roofs, especially for barrier-free transitions to roof terraces and balconies as well as for special constructions (e.g. slope-free green roofs).
     

    As with all DELTA®-TERRAXX types, the material composite of pressure-resistant dimpled sheet and laminated filter-stable geotextile (GRK 2) serves as a drainage layer and effectively protects pressure-resistant substrates against mechanical impacts. DELTA®-TERRAXX ACCESS enables a simple overlapping design with interlocking dimples in the edge area and a tested long-term durability of 100 years.

     

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    Advantages

    • Drainage membrane compliant with regulations for walkable areas over waterproofing
      With its total height of approx. 16 mm, DELTA®-TERRAXX ACCESS meets the requirement for “drainage mats” from the “ZVDH planning aid - barrier-free transitions for roof terraces and balconies” and, with regard to the total height, the corresponding recommendation of the “Walkable areas over waterproofing” leaflet from Gebäudehülle Schweiz for drainage mats (requirement: thickness ≥ 15 mm).
    • Very high drainage capacity
      Thanks to the optimized dimpled structure and height, the sheet offers a much higher drainage capacity compared to products that are sometimes even significantly thicker - for greater safety in all critical areas at risk of accumulation, even in the event of increasing heavy rainfall.
    • Very good handling
      With its narrow width of 1.04 m, the membrane is very easy to work with, especially in confined spaces (e.g. balconies, loggias) - from transportation to the installation site, to cutting to length and alignment.
    • Sophisticated overlap design for maximum (positional) safety
      An exposed row of smaller dimples on one long side allows the overlapping sheet to be connected to the underlay sheet “dimple in dimple”. The fleece overlap on one side protects the drainage level in the area of the overlap from grit or sand trickling in.
    • 100 years of tested long-term durability
      DELTA®-TERRAXX ACCESS is free of recycled material and has achieved a predicted service life of up to 100 years in extensive ageing resistance tests by independent, accredited testing institutes. With DELTA®-TERRAXX ACCESS, you benefit from long-lasting and sustainable protection of the building envelope.
    • QNG-ready
      DELTA®-TERRAXX ACCESS is free from ingredients subject to mandatory labeling and conforms to the EU taxonomy.
    • No clogging of the dimpled structure
      With its special structure and characteristic opening width of 130 μm, the laminated geotextile is particularly filter-stable and reliably and permanently prevents clogging of the dimpled membrane.
    • Compliant with standards
      The drainage membrane is CE-marked on the basis of EN 13252 and meets the requirements of DIN 4095, DIN 18531 and DIN 18533.
       

    Application

    The high-performance protection and drainage system with very high water drainage capacity is particularly suitable for use on:

    • Roof terraces, loggias and balconies in front of barrier-free transitions or
    • Special constructions (e.g. slopeless green roofs)
       

    but also for standard uses such as

    • Flat roofs with heavy gravel surface protection,
    • under extensive and intensive green areas and
    • under areas that can be walked on or driven on by cars.
       

    Technical data

    Material of the impled sheet High-density polyethylene (PE-HD)
    Material of the geotextile Polypropylene (GRK 2)
    Product height approx. 16 mm
    Servicetemperature range from -30°C to +80°C
    Application in drainage systems for drainage (D) and filtration (F) / as a protective layer for waterproofing in accordance with DIN 18531, 18533 and the ZVDH technical rules
    Compressive strength approx. 400 kN/m² (EN ISO 25619-2)
    Tensile strength MD 13.3 kN/m, CMD 12.7 kN/m (EN ISO 10319)
    Puncture resistance 33 mm (EN ISO 13433)
    Characteristic opening width 130 μm (EN ISO 12956)
    Water permeability 0.05 m/s (EN ISO 11058)
    Water flow capacity in the plane 6.81 l/m · s at 20 kPa (Gradient i = 1,0) (EN ISO 12958)
    0.93 l/m · s at 20 kPa (Gradient i = 0,03)
    0.68 l/m · s at 20 kPa (Gradient i = 0,02)
    0.46 l/m · s at 20 kPa (Gradient i = 0,01)
    Resistance to weathering To be covered within two weeks of installation (EN 12224)
    Dimensions 14,4 m x 1,04 m
    Long-term resistance 100 years, in accordance with EN ISO 13438

    Accessories

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    DELTA®-GEOTEXX FS 100

    DELTA®-GEOTEXX FS 100

    Thermally solidified and filter-stable geotextile made of 100% polypropylene for filtering and separating according to the standard EN 13252.

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    DELTA®-TERRAXX ACCESS

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    Declaration of performance DELTA®-TERRAXX ACCESS

    Contact

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    Would you like information on detailed product properties, use cases or other technical topics?
    Then feel free to contact our application department on +49 2330 63 578 or atabvf@doerken.de.

    Do you have questions about prices, availability or the status of your order?
    Our sales service will help you with these matters on +49 2330 63 636 or membranes@doerken.de.

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