ISO 22897:2023

Overview

ISO 22897:2023 - Glass in building - Glazing and airborne sound insulation - Product descriptions, determination of properties and extension rules - defines a standardized method to determine and assess the airborne sound insulation of glass products used in building glazing. The standard applies to transparent, translucent and opaque glass products (basic, special basic and processed types) when acoustic protection is a primary or supplementary characteristic. It refers to the laboratory measurement method in ISO 10140‑1:2021, Annex D, provides extension rules that can reduce or eliminate further testing, and supplies typical performance data for common glass types.

Key topics and requirements

• Scope and product coverage: Monolithic glass, laminated glass, insulating glass units (IGUs), coated and processed glasses, mirrors and other surface treatments.
• Measurement basis: Acoustic performance data shall follow ISO 10140 series application rules and ISO 717‑1 for rating (R, Rw, and spectrum adaptation terms C and Ctr).
• Performance declaration: Sound reduction indices (octave or derived from third‑octave data) and corresponding spectrum adaptation terms must be reported in accordance with ISO 10140‑1 and ISO 717‑1.
• Extension rules: Defined rules allow predicting the acoustic performance after specific, limited product changes without repeating full laboratory tests. Some rules apply to single‑number indices (e.g., Rw, C, Ctr) and others to single‑frequency data; changes not covered require measurement.
• Typical performance data: Provides conservative reference values for common glass configurations when measured data are unavailable.
• Limitations: ISO 22897 addresses glass panes or products alone - assembly effects (frame design, mounting, airtightness) can alter performance and may require testing of complete windows.

Practical applications and users

Who benefits:

• Glass manufacturers - for product acoustic classification, certification and use of extension rules to minimize testing.
• Façade and window system designers - to select glazing solutions that meet airborne sound insulation targets.
• Acoustic consultants and specifiers - to specify glazing performance (R, Rw + C/Ctr) for building acoustics and regulatory compliance.
• Test laboratories - to follow referenced measurement methods and to apply extension rules correctly.
• Regulatory authorities and building owners - to interpret declared glass acoustic data and assess façade performance risks.

Practical notes:

• Use ISO 22897:2023 to justify acoustic performance claims for glass products; when integrating glass into windows, consider additional testing of complete assemblies to confirm in‑situ performance.

Related standards

• ISO 10140 series (laboratory measurement of sound insulation)
• ISO 10140‑1:2021 (application rules, Annex D referenced)
• ISO 717‑1 (rating of airborne sound insulation)
• ISO 12543, ISO 16293, ISO 20492 (product definitions and related glass standards)

Keywords: ISO 22897:2023, glass in building, glazing, airborne sound insulation, sound insulation, insulating glass units, laminated glass, acoustic interlayer, extension rules, ISO 10140‑1, ISO 717‑1.