Overview
EN ISO 12543-2:2021 - "Glass in building - Laminated glass and laminated safety glass - Part 2: Laminated safety glass" specifies performance requirements for laminated safety glass used in buildings. Adopted by CEN in December 2021, this standard defines how laminated safety glass must perform under impact and durability tests and how it is assessed for appearance, dimensions and acoustic properties. It aligns with the ISO 12543 series and cross‑references test methods in ISO 12543-4.
Key topics and technical requirements
- Scope and definitions
- Applies to laminated safety glass as defined in ISO 12543-1. Defects found in installed products are handled by ISO 12543-6.
- Impact resistance
- Classification is based on performance in pendulum impact tests; two pendulum methods are referenced (see ISO 29584). Applicable test method may depend on national regulations.
- Durability tests
- High‑temperature tests: short and long procedures are specified (see ISO 12543-4 clauses). Manufacturers may choose the long test; a successful long test also satisfies the short test requirement.
- Humidity test: requirements and acceptance criteria reference ISO 12543-4; no faults (bubbles, delamination, haze/cloudiness) allowed in specified specimens.
- Radiation test: irradiated specimens must not change light transmittance by more than ±0.03 (if initial transmittance > 0.65) or ±0.02 (if ≤ 0.65); visually, no faults permitted.
- Fire‑resistant laminated safety glass
- Durability provisions specific to fire‑resistant laminates are included (see Clause 6).
- Component parts, dimensions and edge finishing
- Requirements on component materials and finishing are referenced, with details in ISO 12543‑5.
- Acoustic properties and appearance
- Test and evaluation provisions for acoustic performance and visual appearance are specified or referenced (ISO 12543‑4, ISO 12543‑6).
- Designation
- Rules for product designation and labelling are included to support consistent specification and compliance.
Practical applications and users
Who uses EN ISO 12543-2:2021
- Glass manufacturers and laminators establishing product performance and quality assurance
- Architectural specifiers, façade engineers and consultants writing performance‑based glass specifications
- Test laboratories and certification bodies performing pendulum, temperature, humidity and radiation tests (per ISO 12543-4 and ISO 29584)
- Fabricators, installers and building owners assessing suitability for balustrades, doors, skylights, curtain walls and other safety glazing applications
- Regulators and compliance officers referencing harmonized European requirements
Why it matters
- Ensures consistent safety and durability for laminated safety glass in buildings
- Provides objective test criteria for impact resistance, environmental durability and optical stability
- Supports product labelling and cross‑border harmonization under CEN/ISO agreements
Related standards
Keywords: EN ISO 12543-2:2021, laminated safety glass, glass in building, durability tests, impact resistance, humidity test, radiation test, high-temperature test, ISO 12543.