Overview
EN ISO 12543-3:2021 - "Glass in building - Laminated glass and laminated safety glass - Part 3: Laminated glass" (adopted by CEN) specifies performance requirements for laminated glass used in building applications. The standard defines durability and service-related performance expectations and refers to test methods and evaluation criteria for assessing laminated glass performance in various environments. (Defects in installed laminated safety glass are covered separately in ISO 12543-6.)
Key topics and technical requirements
- Scope: Performance requirements for laminated glass as defined in ISO 12543-1 (vocabulary and component descriptions).
- Impact resistance: By definition, laminated glass is not assigned an impact resistance classification in this part.
- Durability tests:
- High-temperature tests: Two options - a short high-temperature test (mandatory) and a long high-temperature test (manufacturer may choose; a successful long test also satisfies the short test; if long test fails, the short test must be performed).
- Humidity test: Specified procedure and evaluation criteria (tested in three specimens; no faults allowed; if one specimen fails, retest three specimens).
- Radiation test: Test methods as per ISO 12543-4 Clause 7 with light transmittance stability limits:
- ±0.03 of initial value when initial light transmittance > 0.65
- ±0.02 of initial value when initial light transmittance ≤ 0.65
- Visual inspection: no bubbles, delamination, haze or cloudiness in three irradiated specimens; same re-test rule applies if only one specimen fails.
- Fire-resistant laminated glass: Durability requirements depend on exposure to direct solar radiation (distinction made between internally and externally glazed fire-resistant laminated glass).
- Other content areas: component parts, dimensions and edge finishing, acoustic properties testing, appearance assessment and designation rules.
Practical applications and users
- Primary users: glass manufacturers, façade and curtain-wall engineers, architects, glazing contractors, test laboratories, product certifiers and standards/specification writers.
- Use cases:
- Specifying laminated glass for façades, balustrades, roofs and internal partitions where durability to heat, humidity and solar radiation is critical.
- Defining acceptance criteria for production quality control and type testing of laminated units.
- Preparing procurement documents and compliance evidence for building codes and certification schemes.
- Guiding laboratory testing programs and evaluation of interlayer performance under environmental exposure.
Related standards
- ISO 12543-1 - Vocabulary and description of component parts
- ISO 12543-4:2021 - Test methods for durability (referenced for high-temperature, humidity and radiation tests)
- ISO 12543-5 - Dimensions and edge finishing
- ISO 12543-6 - Appearance (dealing with defects found in installed laminated safety glass)
Keywords: EN ISO 12543-3, ISO 12543-3:2021, laminated glass, laminated safety glass, glass in building, durability tests, high-temperature test, humidity test, radiation test, fire-resistant laminated glass.
