Tyvek® AirGuard® Smart

Tyvek® AirGuard® Smart


Tyvek® AirGuard® Smart AVCL is airtight and water resistant and adapts its vapour resistance as humidity levels change, giving buildings maximum protection against structural damage caused by humidity.

Tyvek® AirGuard® Smart helps preserve structures by allowing trapped humidity to escape during the drying-out phase – then acting as a traditional AVCL once structures are dry and moisture levels have stabilised. It also provides an effective barrier in winter.

Suitable for a Range of Applications
This advanced product is made with DuPont™ Typar® and is suitable for a wide range of applications requiring superior vapour resistance, including:

  • Renovation from the outside, on sheathing, over rafters
  • As an airtight layer in above-rafter insulation systems
  • Flat or pitched roofs with vapour-closed waterproofing (i.e., where moisture can only escape to the interior)
  • New (timber) construction
  • All-purpose dry lining applications
  • Retaining insulation between rafters or wall framing.
  • Wall systems (masonry, insulated timber or steel frame structures)

Important: Tyvek® AirGuard® Smart is not suitable for structures with permanently high humidity levels, such as saunas.

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    • Extreme vapour resistance range from 0.26MNs/g to more than 150MNs/g (sd-values from 0.05m to more than 30m), hence highly adaptable, means AirGuard® Smart offers one of the widest vapour resistance spans known in the market

    • Combines drying-out and vapour control function in one layer

    • High drying-out potential = high protection against structural damage

    • High tensile strength for superior insulation support / retention

    • Very robust – offering versatility in site work

    • Transparent, allowing the timber members to be easily located for fixing

    • Complies with CE marking

    DuPontTM Typar®, functional film, spun bond PP
    Product Designation Acc. To EN 13984:
    Type B
    Roll Size:
    1.50 m x 50 m/11kg
    Reaction To Fire:
    Mass Per Unit Area:
    139 g/m²
    Water Resistance Range:
    0.26 MNs/g for humid environment (sd 0.05 m) to more than 150 MNs/g for dry environment (more than sd 30 m)
    Temperature resistance:
    From –40°C to +80°C
    Maximum/minimum Tensile Force (MD/XD)::
    360/300 N/50 mm
    Resistance To Tearing (MD/XD):
    310/330 N
    CE Marking:
    Full Information:
    Check out the full datasheet available in the Downloads section!

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