What do smoke vent rooflights (AOVs) in Greenwich involve?
Thinking about smoke vent rooflights (AOVs) in Greenwich? The short answer: automatic smoke ventilators at the head of stairwells and atria. The longer answer depends on your roof, which is why we survey before we price.
Many London roofs are reached only through the house or over neighbouring property, so lifting heavy glass is planned at survey rather than on the day. Typical uses for smoke vent rooflights (AOVs) include blocks of flats and commercial buildings with a smoke strategy.
From Greenwich to Blackheath, Lewisham and Catford, the same survey-first process applies: measure, specify, fix the price, then fit.
Options we can specify in Greenwich
- Electric (24 V) or pneumatic actuation
- Break-glass and smoke-detector triggers
- Rain and wind sensors for daily vent use
- Glazed rooflight or louvred vent
- Service and test plans
- Manual override at the fire service access level
- Servicing and testing available
Things we check at survey
- Replacing a vent with a non-equivalent product can affect the fire strategy
- Smoke ventilation is designed to the building's fire strategy — we install to that design
Building control and safety duties in Greenwich
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.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Greenwich
Prices below are shown including and excluding VAT. In Greenwich, 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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Greenwich address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Smoke vent rooflights (AOVs) near Greenwich
Other services in Greenwich
Smoke vent rooflights (AOVs) in Greenwich: questions
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.
Can you replace an old smoke vent?
Yes, with an equivalent certified unit that matches the original design area and performance, so the fire strategy is not compromised.
How do I book a survey in Greenwich?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Do you fit smoke vent rooflights (AOVs) in Greenwich?
Yes. We survey and fit smoke vent rooflights (AOVs) in Greenwich and across Greater London. Send your postcode and we will offer a survey date when we reply.
