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Underscreed Foil - LOW BASED SHEET | Rothoblaas
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Underscreed Foil - LOW BASED SHEET | Rothoblaas

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  • Use

    Foundations
  • Applications

    Timber construction
  • Characteristics

    Noise absorption, watertight, long-lasting
  • Sizes

    Height: 1.05m | Length: 10m | Thickness: 5mm | Area: 10.5 m2

Supplementary Files

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More about this product

LOW BASED SHEET from Rothoblaas is a resilient under-screed foil made from bitumen and polyester felt.

Features

  • Effective
    The special structure absorbs vibrations from impact noise up to 26 dB
  • Hermetic
    Thanks to the bituminous mixture the product tends to close around the fastening system, ensuring water-tightness
  • Structural Restoration
    Ideal for applying wood-cement connectors. Protects the substrates without the risk of concrete percolation
  • Long-Lasting
    Stable over time, thanks to the bituminous mixture. Also highly compatible with fresh concrete

Material

Elastoplastomeric bitumen coupled with resilient polyester felt. Does not contain harmful substances.

Technical Specifications

Property Standard Value
Thickness (foil + felt) UNI 9947 5 (2+3) mm
Mass per unit area - 1,5 kg/m2
Apparent dynamic stiffness s't - 7 MN/m3
Dynamic stiffness s' - 27 MN/m3
Resistance to airflow r ISO 29053 > 10 kPas/m2
Theoretical estimate of impact sound attenuation level ∆Lw (1) ISO 12354-2 28 dB
System resonance frequency f0 (1) ISO 12354-2 74,4 Hz
Creep (2 kPa) EN 1606 ≤ 1 mm
Compressibility EN 12431 ≤ 2 mm
Resistance to punching: static EN 12730 35 kg
Resistance to punching: dynamic EN 12691 20 cm
Thermal conductivity (λ) - 0,17 W/mK
Water vapor transmission (Sd) - > 100 m
Water vapor resistance factor μ (bituminous foil) - 100000
Thermal resistance R ISO 6946 0,13 m2K/W
Watertightness EN 1928 1 kPa

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