ISO 22482:2021

Overview

ISO 22482:2021 - "Thermal insulation products - Aerogel blanket for buildings - Specification" defines requirements for factory-made aerogel blanket insulation used in building thermal applications. The standard covers product characteristics, sampling, conditioning, test methods, evaluation of conformity, and marking and labelling for blanket-type aerogel products that combine aerogel with a flexible fibrous carrier (e.g., polyester, glass fibre, ceramic fibre). It specifies how to measure and report properties (including thermal performance) but does not mandate minimum performance levels for specific end‑uses.

Key topics and technical requirements

• Scope and definitions: Aerogel and aerogel blanket terminology, symbols and declared properties.
• Product properties and tolerances:
  • Linear dimensions (length/width tolerances ±5%; multiple thickness tolerance classes T1–T5 are defined, e.g. T1 −0/+3%).
  • Density and averaging over specified specimens.
  • Thermal conductivity testing and declaration: measurements per ISO 8301 or ISO 8302, conditioning procedures, reporting with specified test mean temperatures (10 °C or 23 °C).
• Specific application tests: reaction to fire, water absorption (short‑ and long‑term per ISO 29767 / ISO 16535), compressive strength (ISO 29469), corrosiveness to steel, resistance to fungi (ISO 846), flexibility.
• Sampling, conditioning and test methods: detailed specimen numbers, conditioning rules and test apparatus references.
• Conformity and production controls:
  • Evaluation of conformity, initial type tests (ITT) and factory production control (FPC) requirements (Annex A).
  • Annexes B and C provide procedures for determining aged thermal conductivity due to moisture and conductivity vs. moisture content.
• Marking and labelling: requirements for product information and declared properties.

Practical applications

• Specification and quality control for aerogel blanket insulation used in building envelopes: walls, roofs, floors, façades and retrofit installations where high thermal performance with thin profiles is required.
• Useful for manufacturers establishing production control, testing laboratories executing thermal and durability tests, and procurement/specification teams verifying declared properties for building projects.

Who should use this standard

• Insulation manufacturers and product developers
• Test laboratories and conformity assessment bodies
• Architects, consulting engineers and specifiers
• Building contractors, façade and retrofit specialists
• Regulatory authorities and certification bodies

Related standards

Key referenced standards include ISO 8301, ISO 8302 (thermal conductivity), ISO 10456 (declared thermal values), ISO 29465/29466/29470 (dimensions, thickness, density), ISO 29767 / ISO 16535 (water absorption), and ISO 12576-1 (conformity control systems). Use ISO 22482:2021 alongside these documents for complete test and declaration workflows.