sd (max) lower limit of the diffusion-equivalent air-layer thickness

s_d (max) lower limit of the diffusion-equivalent air-layer thickness

Details of the upper limit of the diffusion-equivalent air-layer thickness

This layer or component property is a parameter to determine the resistance against water vapour diffusion. It is calculated from the thickness of a construction material or building component layer multiplied by the µ value (vapour diffusion resistance value) and requires a clear thickness parameter.

Proof: Manufacturer information

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