Approved Document B (ADB)

Approve Document B

Designed by Be Safe Direct, the ADB Natural Smoke Ventilation System is intended for use in buildings designed in accordance with Approved Document B (ADB).

Approved Document B (ADB): Lobbied stair venting system

A complete natural smoke ventilation package that provides ‘out of the box’ protection for small, lobbied single stair residential buildings. It is designed for use where lobby travel distance is less than 4.5m. Package options include:

  • Stair vent control unit
  • Power supply with battery back up
  • Stair orange smoke venting call points
  • 1m² louvered stair smoke vent or stair window chain actuator

Approved Document B (ADB): Unlobbied stair venting system

This natural smoke ventilation system is intended for use in small single stair residential buildings (ground and 3 floors) with no lobby protection. Where there are no more than two apartments per floor and each apartment has an internal protected hall, it provides Building Regulation-approved venting performance and reliability at a highly competitive price.

  • Stair vent control unit
  • Power supply with battery back up
  • Stair orange smoke venting call points
  • Smoke detectors
  • 1m² louvered stair smoke vent or stair window chain actuator

Need more information?

For technical advice or a free quote call our expert team on 0845 604 5653 or email customerservices@besafedirect.com

ADB Schematic

Standard schematic for illustration purposes only

ADB Schematic

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