Codes & Standards - Purchase
ISO 21129:2007
Hygrothermal performance of building materials and products -- Determination of water-vapour transmission properties -- Box method
SKU: iso_035674_117440
Published by ISO
Publication Year 2007
1 Edition
11 pages
Product Details
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.