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PS 2253-2026
Active
Hygrothermal performance of building materials and products — Determination of water vapour transmission properties — Cup method
Committee:
Construction products
Sector:
Construction and Building
Available Standards
Original Standard
إنجليزي (English)
43
Page
2026
International Classification for Standards (ICS)
| Code | Classification |
|---|---|
| 91.120.10 | Thermal insulation of buildings |
Adopted Standards
| Standards / Amendment / Corrigendum | |
|---|---|
| 1 | ISO 12572:2016 |
| 2 | Amd 1:2024 |
Replacement Sequence
| Replaces |
|---|
| PS 2253-2019 |
Scope
This document 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 insulation materials and including those with facings and integral skins. Annexes give details of test methods suitable for different material types.
The results obtained by this method are suitable for design purposes, production control and for inclusion in product specifications.