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<p>The Government has used the European system for classifying the combustibility
of materials to set the threshold for the ban on the use of combustible materials
in the external walls of buildings covered by the ban. The European classification
system measures smoke obscuration, though not toxicity. The ban requires that all
materials which become part of an external wall or specified attachment achieve European
Class A2-s1, d0 or Class A1, other than those covered by exemptions. This means that
materials are classified by smoke production as well as combustibility and production
of droplets. These classifications impose the maximum possible restriction on smoke
production.</p><p>In addition, the Department for Education has also committed to
ensuring that new school buildings, over 18 metres, built as part of their centrally
delivered build programmes will not use combustibles materials in the external walls,
in line with the terms of the ban.</p><p>The Department for Education’s guidance on
schools (BB100) and guidance provided to NHS (Firecode) on fire safety contains detailed
information on how to control the risks of fire and its associated hazards, by prevention,
containment, and alert.</p>
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