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Fire resisting ductwork - classified according to BS EN 13501 Parts 3 and 4 - European version (Blue book). 1st edition

Fire resisting ductwork - classified according to BS EN 13501 Parts 3 and 4 - European version (Blue book). 1st edition

Document Status



Core Supplement


Provides complementary information based on data obtained from fire tests and classifications in BS EN 13501 Parts 3 and 4. Offers best practice guidance for ductwork in buildings, covering design and installation, looking at systems and functions, legislation, best practice advice, penetration seals and support systems. This European version complies with the requirements of the European Construction Products Directive (or the proposed Regulation). Includes data sheets detailing duct systems.


Complementary Blue Book to the "Fire resisting ductwork - an industry guide to design and installation (Blue book). 2nd edition. (ASFP, 2007)". Published by ASFP in conjunction with HVCA. Replaces 1st edition, June 2009.




Publisher History

Formed in 1975, the Association for Specialist Fire Protection currently represents the major U.K. based specialist manufacturers and installers of structural passive fire protection systems. They produce technical information to ensure built in fire protection in buildings.



NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.


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