What are smoke vent rooflights (AOVs)?
Across Merseyside, our smoke vent rooflights (AOVs) work covers automatic smoke ventilators at the head of stairwells and atria. Survey first, fixed price second, fitting third.
Exposed hillside towns in the North West need flashing and seal details that cope with wind-driven rain. Converted mills and warehouses in the North West often have large rooflights or glass roofs that need specialist replacement.
Towns in Merseyside
Specification options in Merseyside
- Electric (24 V) or pneumatic actuation
- Glazed rooflight or louvred vent
- Service and test plans
- Rain and wind sensors for daily vent use
- Control panel with battery backup
- Servicing and testing available
- Manual override at the fire service access level
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 supply manufacturer-certified units and arrange installation, commissioning and servicing through specialist smoke-control engineers.
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.
Smoke vent rooflights (AOVs) prices in Merseyside
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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.
Can a smoke vent be used for normal ventilation?
Many dual-purpose units also open for daily ventilation, closing automatically in rain.
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 I need to be at home for the survey in Merseyside?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
