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Pavatex Isolair Permeable Sarking Board

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The Pavatex Isolair Permeable Sarking Boards come in a range of different thicknesses ranging up to 200mm. You can shop the full range by using the drop down. This range of sarking boards can be exposed to the weather for up to 3 months, according to the European standard EN 14964 the boards are waterproof. Isolair sarking boards can also act as insulation boards, this means that they can be included in the calculation of heat transfer. If these sarking boards are being used in external walls in timber construction with cladding, they can be treated as a vapour permeable water repellent layer. When being used as sarking boards, please observe your country specific application codes according to the regulations and standards in the technical document.

Features & Benefits: Pavatex Isolair Permeable Sarking Board

  • Can be unprotected for 3 months
  • Waterproof under EN 14964
  • Included in calculation of heat transfer
  • Can be treated as vapour permeable water repellent layer
  • Class E Fire Behaviour EN 13501 - 1
  • Bulk Density (kg/m3): 200 / 145
  • Tensile Strength Perpendicular To Plane Of Board: 30 / 10
  • Specific Heat Capacity (J/kgK): 2100
  • Vapour Diffusion Resistance Coefficient: 3

Standards & Certification

  • Fire Behaviour (EN 13501 - 1): Class E
  • Thermal Conductivity (EN 13171) (W/mK): 0.044 / 0.041
  • Standard: EN 14964


Length 560mm
Thickness 140mm
Width 1780mm


Material Wood Fibre Thermal Conductivity 0.044 W/mK Edging Tongue & Groove

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