Welcome to SK Sales


England and Wales


This is an introductory guide and is not a definitive source of legal information.

This guidance relates to the planning regime for England. Policy in Wales may differ.

If in doubt contact your Local Planning Authority.


Northern Ireland



  • Building Engineering Services Association - Ventilation
    • DW 143: Guide to Good Practice - Ductwork air leakage testing
    • DW 144: Specification for Sheet Metal Ductwork
    • DW 154: Specification for Plastics Ductwork
    • DW 172: Specification for Kitchen Ventilation Systems
    • TR 35: Low Energy Ventilation For Residential Buildings

  • British Standards
    • BS EN 15650:2020
      Ventilation for buildings. Fire dampers
    • BS 9999:2017
      Fire safety in the design, management and use of buildings. Code of practice
  • Building Bulletin 101
    Guidelines on ventilation, thermal comfort and indoor air quality in schools (Version 1, August 2018)
  • HTM 03-01
    Heating and ventilation of health sector buildings (HTM 03-01)
  • CTT1
    CIBSE Top Tips 1: Ventilation in Buildings


  • AIVC (Air Infiltration and Ventilation Centre)
  • BESA - Building Engineering Services Association
  • CIBSE - Chartered Institution of Building Services Engineers
  • REFCOM - Body for certifying F-Gas companies (sole traders to Limited companies)
  • F-Gas Register - Body for certifying F-Gas companies (sole traders to Limited companies)
  • NAADUK - National Association of Air Duct Specialists UK

Europe / International
  • Eurovent Association
  • EVIA - European Ventilation Industry Association
  • ISIAQ - International Society of Indoor Air Quality and Climate
  • REHVA - Federation of European Heating, Ventilation and Air Conditioning Associations

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