May 2026 Brings New Impact Testing Standard for Vacuum Insulating Glass

The glass and ceramics sector has received a significant update in safety and quality this May 2026 with the publication of a pivotal new international standard: ISO 19916-4:2026. Focused on vacuum insulating glass (VIG), this standard establishes a robust methodology for pendulum impact testing and sets a clear framework for classifying glass safety performance. This change directly impacts manufacturers, quality managers, compliance officers, engineers, and procurement specialists in the building materials space, particularly those working with advanced glass solutions.

Overview

Glass and ceramics are at the heart of modern architecture, interior fit-outs, and high-performing facade systems. These materials not only define the look of contemporary buildings but also contribute fundamentally to energy efficiency, comfort, and above all, safety. As the global push toward energy-saving and high-performance buildings continues, vacuum insulating glass (VIG) has emerged as a leading solution, combining superior insulating properties with slim profiles and enhanced durability.

Standards like ISO 19916-4:2026 are critical in ensuring that such innovative products meet rigorous expectations for occupant protection. This article analyzes the newly published standard, explains its technical requirements and implications, and provides guidance to industry professionals on compliance and best practices.

Detailed Standards Coverage

ISO 19916-4:2026 – Glass in Building — Vacuum Insulating Glass — Part 4: Pendulum Impact Testing and Classification

Glass in building — Vacuum insulating glass — Part 4: Pendulum impact testing and classification

Scope and Purpose: The ISO 19916-4:2026 standard prescribes a method to evaluate the safe breakage characteristics of vacuum insulating glass (VIG) using pendulum impact testing. The aim is to reduce the risk of cutting or piercing injuries resulting from accidental human impact. The standard makes use of specifically designed impactors (as per ISO 29584:2015) and provides a graded classification system for tested VIG products.

Applicability:

• VIG without further processing (Group 2)
• VIG processed into laminated glass (Group 1)
• VIG backed with an adhesive (safety) film (Group 1)

Note: Insulating glass units that merely incorporate VIG are excluded from this standard.

Key Requirements:

• Utilizes a soft-body pendulum impact test, simulating accidental human impact.
• Specifies mode of breakage requirements for two primary types:
  • Type B: Numerous cracks with no shear or opening larger than 76mm that a sphere can pass through; strict limitations on glass particle mass if detachment occurs.
  • Type C: Glass disintegration, with particle size and mass strictly regulated.
• Requires test specimens to be representative of normal product.
• Sets forth calibration, specimen preparation, and reporting procedures in line with ISO 29584.
• Defines performance classification based on drop height, mode of breakage, and overall impact resistance.

Classification Methodology:

• Classifies VIG products by the energy level (drop height) withstood and the resulting breakage mode. This assists legislators, designers, and end-users in selecting the appropriate safety performance for various building applications.

Implications:

• Provides manufacturers and specifiers with a clear method to assess and communicate the safety of VIG products.
• Supports regulatory bodies and architects in specifying glass that minimizes injury risk in public and private buildings.
• Lays groundwork for harmonized safety expectations internationally, facilitating global trade and adoption of advanced VIG.

Key highlights:

• Establishes uniform, repeatable testing protocols for VIG using established ISO methodologies.
• Applies rigorous particle mass and opening size requirements to minimize injury risk.
• Supports safety-by-design by guiding appropriate glass selection for impact-prone building locations.

Access the full standard:View ISO 19916-4:2026 on iTeh Standards

Industry Impact & Compliance

How ISO 19916-4:2026 Affects the Glass and Ceramics Sector

The introduction of ISO 19916-4:2026 is a transformative moment, especially for:

• Manufacturers of architectural glass products seeking global market access.
• Quality managers aiming to demonstrate independent, third-party verification of safety claims.
• Designers and architects responsible for compliance with safety codes and liability management.
• Procurement teams specifying materials for projects with high performance and safety requirements.

Compliance Considerations:

• Manufacturers must ensure that in-house or external testing facilities are equipped and calibrated to meet the pendulum impact test methods outlined.
• Organizations should update quality management systems and technical documentation to reference ISO 19916-4:2026 for VIG product safety evaluation.
• Adoption may be required for public tenders or to meet updated building codes.

Timeline:

• The standard was officially published in May 2026. Organisations are expected to begin integration into product development and documentation immediately, with formal adoption timelines depending on regional regulations and client requirements.

Benefits of Adoption:

• Enhanced occupant safety and peace of mind for building owners and users
• Reduced liability risks related to glass impact injuries
• Easier conformity assessment for cross-border projects due to harmonized classification
• Competitive advantage for companies proactively adhering to the latest safety benchmarks

Risks of Non-Compliance:

• Potential exclusion from tenders or projects mandating updated safety glass specifications
• Increased risk exposure in the event of glass-related accidents
• Possible reputational and financial damage from non-adherence to internationally recognized safety practices

Technical Insights

Understanding and Applying ISO 19916-4:2026 Requirements

Consistent Technical Criteria:

• All VIG products intended for impact-prone locations must undergo pendulum impact testing, with drop heights and impact energies graded according to intended safety class.
• Glass breakage modes are strictly defined, ensuring that broken pieces minimize the chance of severe cuts or punctures.
• Calibration and repeatability are paramount: all test apparatus must adhere to ISO 29584 calibration procedures, ensuring comparable results worldwide.

Implementation Best Practices:

1. Early Design Integration: Incorporate impact performance classification into glass selection at the design phase.
2. Test Planning: Work with ISO 19916-4:2026-accredited laboratories or set up in-house capabilities. Ensure staff are trained on particle mass calculation, specimen preparation, and reporting guidelines as defined.
3. Documentation: Maintain detailed records of all testing, calibration, and product classifications to ease code compliance audits and client due diligence.
4. Ongoing Monitoring: Review and re-test products following any process or material change that could affect impact performance.

Testing and Certification:

• Collaborate with certification bodies experienced in glass and building safety standards.
• Factor in both Type B and Type C breakage scenarios to ensure comprehensive safety across all intended applications.
• Use test certification results as part of your product marketing and compliance portfolio.

Conclusion & Next Steps

The publication of ISO 19916-4:2026 marks a significant milestone in the drive for higher safety in glass and ceramics used in modern buildings. By introducing precise, harmonized testing and classification for vacuum insulating glass, it ensures that safety is considered at every stage—from product design to building occupancy.

Key takeaways for organizations:

• Update internal specifications and procurement requirements to reference ISO 19916-4:2026 for all VIG intended for safety-critical areas.
• Engage early with testing partners to ensure timely compliance and smooth certification.
• Educate sales, technical, and customer teams on the new standard to better inform clients and project partners.

Continue to monitor the evolving landscape of glass and building safety standards to position your organization as a quality and safety leader.

For in-depth guidance, procurement details, or to access the full publication, visit the authoritative source for international standards:

View ISO 19916-4:2026 on iTeh Standards: https://standards.iteh.ai/catalog/standards/iso/df8b6ae6-d374-4c51-867a-db2a593ccfe7/iso-19916-4-2026

Stay proactive—explore the full details, and keep current with all developments in glass and ceramics industry standards at iTeh Standards.