What do smoke vent rooflights (AOVs) in Balham involve?
Smoke vent rooflights (AOVs) in Balham means automatic smoke ventilators at the head of stairwells and atria. We cover the SW12 district and the rest of Greater London, with a survey before any price is fixed.
London homes often run deep from front to back, so the middle of the ground floor is the darkest space — exactly where an overhead rooflight earns its keep. In Balham, as anywhere, smoke vent rooflights (AOVs) are the usual choice for communal stairwells, corridors and atria.
From Balham to Clapham, Streatham and Brixton, the same survey-first process applies: measure, specify, fix the price, then fit.
What you can choose
- Break-glass and smoke-detector triggers
- Glazed rooflight or louvred vent
- Control panel with battery backup
- Service and test plans
- Electric (24 V) or pneumatic actuation
- Manual override at the fire service access level
- Also usable for day-to-day ventilation
Before you order: points to check
- Whoever holds the building's fire-safety duties (the responsible person, the duty holder in Scotland or the appropriate person in Northern Ireland) must keep systems maintained and tested
- Replacing a vent with a non-equivalent product can affect the fire strategy
Rules and responsibilities in Balham
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. Fragile-roof safety and access are planned before work starts.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Balham
Guide prices for smoke vent rooflights (AOVs) in Balham are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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 |
What happens next
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Balham, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
Other services in Balham
Questions about smoke vent rooflights (AOVs) in Balham
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.
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 I need to be at home for the survey in Balham?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you fit smoke vent rooflights (AOVs) in Balham?
Yes. We survey and fit smoke vent rooflights (AOVs) in Balham and across Greater London. Send your postcode and we will offer a survey date when we reply.
