What are smoke vent rooflights (AOVs)?
Our smoke vent rooflights (AOVs) service in Gwynedd covers automatic smoke ventilators at the head of stairwells and atria. We survey every job before fixing the price.
Chapels, barns and farm buildings converted across Wales often need bespoke or conservation-style glass. Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere.
Towns in Gwynedd
What you can choose
- Rain and wind sensors for daily vent use
- Break-glass and smoke-detector triggers
- Control panel with battery backup
- Electric (24 V) or pneumatic actuation
- Glazed rooflight or louvred vent
- Glazed units bring daylight to stairwells
- Manual override at the fire service access level
Planning and building rules in Wales
Smoke vents are life-safety equipment: in Wales the responsible person must keep them maintained under the Regulatory Reform (Fire Safety) Order 2005 (as it applies in Wales). We install to the building's fire strategy and the manufacturer's certification.
For non-domestic buildings in Wales, Approved Document L sets limiting U-values for rooflights and roof ventilators; we supply the manufacturer's data for the building control submission. Fragile-roof safety and access are planned before work starts.
What do smoke vent rooflights (AOVs) cost in Gwynedd?
Prices below are shown including and excluding VAT. In Gwynedd, 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.
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.
Can a smoke vent be used for normal ventilation?
Many dual-purpose units also open for daily ventilation, closing automatically in rain.
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 fit smoke vent rooflights (AOVs) across Gwynedd?
Yes. We survey and fit smoke vent rooflights (AOVs) across Gwynedd, including Bangor, Gwynedd, Caernarfon, Dolgellau.
