ISO 21129:2007

Hygrothermal performance of building materials and products — Determination of water-vapour transmission properties — Box method

STANDARD published on 4.7.2007

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The information about the standard:

Designation standards: ISO 21129:2007
Publication date standards: 4.7.2007
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: International technical standard
Category: Technical standards ISO

Annotation of standard text ISO 21129:2007 :

Description / Abstract: 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.