ISO/CD TS 25399

Large Outdoor Fires and the Built Environment: harmonizing the test methods for thermal flux exposure ISO/CD TS 25399

General information

30.60   Close of voting/ comment period   Jul 26, 2026

ISO

ISO/TC 92 Fire safety

Technical Specification

Scope

This TS first presents a review of the different worldwide existing tests to assess the resistance of building components (mainly vents and roofs) under the thermal flux exposure during a large outdoor fire. Then a methodology is proposed to harmonize these tests into a single international ISO standard.

Life cycle

NOW

IN_DEVELOPMENT
ISO/CD TS 25399
30.60 Close of voting/ comment period
Jul 26, 2026




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