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Moisture-variable, fabric-reinforced vapour retarder for use in the air-tight layer. High back-drying potential with adequate sun exposure.

AIRSTOP DIVA+ Vapour Retarder fabric- reinforced

Excluding Sales Tax
  • A moisture-variable vapour retarder for use in the air-tight layer. The functional membrane changes its diffusion resistance depending on the current humidity. During the winter months room atmosphere is generally dryer. The sd-value of the vapour retarder increases. This process results in the penetration of only a little water vapour into the construction and/or into the insulation. In summer, when there is sufficient solar insolation, the relative humidity behind the membrane is higher as a result of reverse diffusion. The water molecules are stored in the membrane. The sd-value sinks, causing more water vapour to escape from the construction and into the rooms and the building element becomes dryer.

    Material Composition Non-woven composite made from polymers with filament reinforcement
    Colour Transparent white with blue print
    Weight 110 g/m²
    Weight per unit area (± 5 %)
    Weight per unit area EN 1849-2
    sd-value 0.5 m
    sd-value 30 m
    sd-value - Standard EN ISO 12572
    Temperature resistance -40 °C
    Temperature resistance 80 °C
    Elongation - lengthwise 20%
    Elongation - crosswise 20%
    Elongation EN 12311-2
    Tensile strength - lengthwise 350 (± 20) N / 50 mm
    Tensile strength - crosswise 315 (± 20) N / 50 mm
    Tensile strength EN 12311-2
    Tear propagation resistance - lengthwise 350 N (-25 / +35)
    Tear propagation resistance - crosswise 375 N (-25 / +35)
    Tear propagation resistance EN 12310-1
    cool and dry


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