ISO 21129:2007
Hygrothermal performance of building materials and products — Determination of water-vapour transmission properties — Box method
Hygrothermal performance of building materials and products — Determination of water-vapour transmission properties — Box method
Referenced standards
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Hygrothermal performance of building materials and products — Determination of water-vapour transmission properties — Box method
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.
| Edition | 2007 |
|---|---|
| Published Date | 2007 |
| Published By | International Standardization Organisation |
| Page Count | 11 |