ISO 21129:2007
$19.50
Hygrothermal performance of building materials and products — Determination of water-vapour transmission properties — Box method
| Published By | Publication Date | Number of Pages |
| ISO | 2007-07 | 18 |
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.
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