What are smoke vent rooflights (AOVs)?
Smoke vent rooflights (AOVs) in Bristol means automatic smoke ventilators at the head of stairwells and atria. Every quote follows a survey of the roof and the room below.
Western coasts take wind-driven rain, so we pay close attention to upstand height and flashing laps on exposed roofs. Holiday lets and second homes across the South West often want roof windows with blinds and remote opening for when the house is empty.
Towns in Bristol
Options we can specify
- Electric (24 V) or pneumatic actuation
- Rain and wind sensors for daily vent use
- Service and test plans
- Break-glass and smoke-detector triggers
- Control panel with battery backup
- Opens automatically on alarm signal
- Replacement of failed or obsolete units
Planning and building rules in England
Smoke vents are life-safety equipment: in England the responsible person must keep them maintained under the Regulatory Reform (Fire Safety) Order 2005. We install to the building's fire strategy and the manufacturer's certification.
For buildings other than dwellings, Approved Document L Volume 2 sets limiting U-values of 2.2 W/m²K for rooflights and 3.0 W/m²K for roof ventilators, including smoke vents. Fire classification of rooflight materials near boundaries is checked at specification.
What do smoke vent rooflights (AOVs) cost in Bristol?
Prices below are shown including and excluding VAT. In Bristol, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large glazed AOV with actuators | £4,795 – £7,795 | £3,995 – £6,495 |
| Standard glazed AOV Typical | £3,595 – £4,795 | £2,995 – £3,995 |
| Replacement vent onto existing upstand | £2,995 – £3,595 | £2,495 – £2,995 |
How the job runs
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Smoke vents in nearby areas
Common questions
How often should AOVs be tested?
Industry guidance recommends regular functional checks and at least annual servicing. Your fire risk assessment sets the regime.
Who is responsible for maintaining smoke vents?
The responsible person (or duty holder in Scotland, appropriate person in Northern Ireland) for the building must keep fire safety systems maintained. We can arrange servicing and keep records.
Do you design the smoke strategy?
No — the strategy comes from the building's fire engineer or designer. We supply, install, commission and service to it.
Do smoke vents need a control panel?
Electric AOVs work with a control panel that links them to detectors, the fire alarm and override switches.
Do you fit smoke vent rooflights (AOVs) across Bristol?
Yes. We survey and fit smoke vent rooflights (AOVs) across Bristol, including Bristol, Clifton, Fishponds.
