Overview
EN ISO 12570:2000/A2:2018 - Hygrothermal performance of building materials and products: Determination of moisture content by drying at elevated temperature - is an amendment (A2, 2018) to ISO 12570:2000 adopted by CEN. This document updates the internationally recognised method for determining the moisture content of construction materials by drying samples at elevated temperature, a key parameter for assessing hygrothermal performance, durability and thermal behaviour of building materials.
Key topics and technical requirements
- Scope: Method for determining moisture content of building materials and products using drying at elevated temperature. The amendment A2 represents a minor revision to the original ISO 12570:2000.
- Procedure principle: Moisture content is determined gravimetrically by drying a representative sample at a specified elevated temperature until mass stabilisation. (The standard specifies the procedural details and criteria for repeatability and stability.)
- Clause update (8.3): Amendment A2 replaces the NOTE in Clause 8.3 with an updated empirical equation for the density of water as a function of temperature (θ °C). This update improves accuracy when converting between mass and volume of water in moisture calculations.
- Standardisation and adoption: Endorsed by CEN and to be implemented as a national standard across CEN member bodies; users should observe the national adoption date and any national language versions.
- Legal/administrative notes: The amendment warns of possible patent rights and reminds users to respect ISO/CEN reproduction and copyright rules.
Applications and who uses this standard
- Materials testing laboratories: For routine and contract moisture content testing of insulation, masonry, wood-based products, composites, plasters and other building materials.
- Manufacturers and quality control: To verify product moisture levels for manufacturing control, storage and shipping specifications.
- Building physicists and researchers: For hygrothermal modelling inputs, durability assessments and experimental studies where accurate moisture data are required.
- Specifiers and compliance officers: To ensure materials meet project moisture-related performance criteria and to support certification or regulatory compliance.
- Restoration and conservation professionals: For assessing moisture-related risks in historic fabric and guiding remediation.
Related standards
Keywords: EN ISO 12570:2000/A2:2018, ISO 12570, moisture content, drying at elevated temperature, hygrothermal performance, building materials, moisture testing, construction materials.