Extended application assessment procedures

Where it is proposed to assess the classification of a product or system in lieu of carrying out a specific test (as in paragraph 1.6A(b)), this should be done in accordance with the relevant standard for extended application for the test in question and should include details of the test evidence that has been used to support the assessment. For performance classifications where there is no specific standard for extended application, assessment reports should be produced in accordance with the principles of BS EN 15725 and should include details of the test evidence that has been used to support the assessment. Further information on best practice is provided in the Passive Fire Protection Forum's Guide to undertaking technical assessments of fire performance of construction products based on fire test evidence. Note: Regulation 23(2) limits components used in or on the external walls of relevant buildings to materials achieving European Classification A2-s1, d0 or Class A1 (see Section 5). Assessments cannot be used to demonstrate compliance with this requirement.