BS 8414-2:2015+A1:2017

This British standard provides a test method for determining the fire performance characteristics of non‑loadbearing external cladding systems, such as curtain walling, glazed elements, infill panels and insulated composite panels, fixed to and supported by a structural steel frame when exposed to an external fire under controlled conditions. The fire exposure is representative of an external fire source or a fully‑developed (post‑flashover) fire in a room, venting through an opening such as a window aperture that exposes the cladding to the effects of external flames, or from an external fire source.

This British Standard does not apply to non‑loadbearing external rainscreen overcladding systems or external wall insulation systems applied to the face of a building, the fire testing of which are covered in BS8414‑1.

This British Standard does not cover exposure to radiant heat from a fire in an adjacent building.

NOTE Performance Criteria and Classification methodology of the external fire performance can be found in references such as Report BR135: Fire performance of external thermal insulation for walls of multi‑storey buildings [3].