What do smoke vent rooflights (AOVs) in Sidcup involve?
Smoke vent rooflights (AOVs) in Sidcup means automatic smoke ventilators at the head of stairwells and atria. We cover the DA14 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. In Sidcup, as anywhere, smoke vent rooflights (AOVs) are the usual choice for blocks of flats and commercial buildings with a smoke strategy.
From Sidcup to Bexley, Welling and Eltham, the same survey-first process applies: measure, specify, fix the price, then fit.
Choices for your Sidcup project
- Glazed rooflight or louvred vent
- Service and test plans
- Electric (24 V) or pneumatic actuation
- Control panel with battery backup
- Rain and wind sensors for daily vent use
- Servicing and testing available
- Also usable for day-to-day ventilation
Things we check at survey
- 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
- The product should be certified to BS EN 12101-2 as a natural smoke and heat exhaust ventilator
Regulations for smoke vent rooflights (AOVs) in Sidcup
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.
What do smoke vent rooflights (AOVs) cost in Sidcup?
These are typical supply-and-fit ranges. For an address in Sidcup, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| 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 |
The process, step by step
- Tell us what you have. Send the DA14 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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 Sidcup
Related work in Sidcup
Common questions
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.
How often should AOVs be tested?
Industry guidance recommends regular functional checks and at least annual servicing. Your fire risk assessment sets the regime.
Can you work alongside my builder in Sidcup?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
How do I book a survey in Sidcup?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
