BS EN 13238:2026

This document establishes the general principles for the conditioning procedures for test specimens tested according to the European standards for reaction to fire. The rules for the selection of substrates for construction products when carrying out reaction to fire tests are also detailed in this document. In order to use the extension rules set in this document, no modification of the standard substrate is allowed. This document does not contain requirements for: — the pre-drying of test specimens for the non-combustibility test according to EN ISO 1182; — methods of cleaning (e.g. washing) and other methods for the assessment of durability aspects, which are dealt with in the relevant product standards.