M00020294
New product
ISO DIS 12572 2014 Edition, December 4, 2014 HYGROTHERMAL PERFORMANCE OF BUILDING MATERIALS AND PRODUCTS - DETERMINATION OF WATER VAPOUR TRANSMISSION PROPERTIES
In stock
Warning: Last items in stock!
Availability date: 07/14/2021
Description / Abstract:
This standard specifies a method based on cup tests for
determining the water vapour permeance of building products and the
water vapour permeability of building materials under isothermal
conditions. Different sets of test conditions are specified.
The general principles are applicable to all hygroscopic and
non-hygroscopic building materials and products, including those
with facings and integral skins. Annexes give details of test
methods suitable for different material types. If the measured
water vapour diffusion-equivalent air layer thickness is greater
than 1500 m the material can be considered impermeable.
The results obtained by this method are suitable for design
purposes, production control and for inclusion in product
specifications.