Abstract Preview

ISO 21129:2007 specifies a box method for determining the water-vapour permeability of building materials. The box method is used primarily to measure the water-vapour permeance of materials that have low water-vapour resistance, in which the influence of the surface-humidity transmission-resistance cannot be ignored.


General information

  • Status :  Published
    Publication date : 2007-07
  • Edition : 1
    Number of pages : 11
  • :
    ISO/TC 163/SC 1
    Test and measurement methods
  • 91.120.10
    Thermal insulation of buildings

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