Smoke vent rooflights (AOVs) for Morden: the essentials
Smoke vent rooflights (AOVs) in Morden means automatic smoke ventilators at the head of stairwells and atria. We cover the SM4 district and the rest of Greater London, with a survey before any price is fixed.
Victorian and Edwardian terraces with narrow side returns are typical of much of London, and a glass roof or long flat rooflight is the usual way to keep the back rooms bright once the return is built over. Smoke vent rooflights (AOVs) suit blocks of flats and commercial buildings with a smoke strategy.
Morden sits about 2 km from Mitcham and 3 km from Wimbledon, and we cover the whole SM4 postcode district and the roads in between.
What you can choose
- Break-glass and smoke-detector triggers
- Electric (24 V) or pneumatic actuation
- Control panel with battery backup
- Service and test plans
- Glazed rooflight or louvred vent
- Opens automatically on alarm signal
- Manual override at the fire service access level
What to check first
- Replacing a vent with a non-equivalent product can affect the fire strategy
- The product should be certified to BS EN 12101-2 as a natural smoke and heat exhaust ventilator
Building control and safety duties in Morden
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.
See our building regulations guide for U-values, glazing limits and self-certification.
What do smoke vent rooflights (AOVs) cost in Morden?
Prices below are shown including and excluding VAT. In Morden, 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 Morden address.
- Measure and check. A surveyor visits Morden, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Smoke vent rooflights (AOVs) near Morden
More we do in Morden
Common questions
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.
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 smoke vents need a control panel?
Electric AOVs work with a control panel that links them to detectors, the fire alarm and override switches.
How do I book a survey in Morden?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Do I need to be at home for the survey in Morden?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
