Smoke and Heat Exhaust Ventilation systems (SHEV’s) are designed to assist with the natural extraction of smoke from a building during the event of a fire, and Automatic Opening Vent (AOV) roof lights can be an effective choice for this type of application.

However, specifying the correct type AOV roof light, is vital to ensure maximum safety and compliance with Building Regulations.

Although both standard and electronic opening rooflights can aid smoke clearance, they should not be used specifically for smoke ventilation purposes.

To comply with Construction Products Regulations, AOV systems must be CE marked against BS EN 12101-2:2003, a European Standard which gives the appropriate testing methods for components specifically installed as a natural smoke and heat exhaust system.

When specifying ventilation rooflights for smoke extraction purposes, ensure you choose a BS EN 12101-2:2003 compliant rooflight.