IS 19328:2025

Fire Resistant Glass — Specification

This Indian Standard provides a comprehensive and structured framework for defining the performance, classification, and conformity of fire-resistant glass. Recognizing the critical role of such materials in safeguarding lives, property, and the structural integrity of buildings, the standard underscores that fire-resistant glass is a fundamental safety element in modern construction. In the absence of an equivalent ISO standard, it consolidates national requirements and aligns them with recognized international practices.

Applicable exclusively to glass units, the specification prescribes key terminologies, scope, and classification systems. Fire-resistant glass is categorized into three main types—E (Integrity), EW (Integrity and Radiation Control), and EI (Integrity, Radiation Control, and Insulation). These classifications are determined through rigorous testing, assessing properties such as load-bearing capacity, insulation thresholds, radiation control, and fire resistance duration under prescribed conditions.

The standard further outlines the general requirements and performance expectations for a wide range of fire-resistant glass variants, including wired, glass-ceramic, borosilicate, thermally toughened soda-lime silicate, laminated, gel-filled, and low-emissivity coated glass. Each variant is subject to defined manufacturing specifications, mechanical and thermal performance criteria, and acceptance parameters to ensure uniformity and reliability across applications.

Complementary provisions address the methodology for sampling, conformity assessment, packaging, and marking to guarantee product consistency and traceability. The framework outlined in the Standard seeks to enhance fire safety, ensure structural resilience, and contribute to the development of safer and more reliable infrastructure.

Last Updated on September 8, 2025