Smoke vent rooflights (AOVs) in Letchworth Garden City: what is involved?
We handle smoke vent rooflights (AOVs) across Hertfordshire, including Letchworth Garden City. In short: automatic smoke ventilators at the head of stairwells and atria. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Many South East homes have been extended more than once, and an old dome over an earlier extension is often due for replacement. Smoke vent rooflights (AOVs) suit communal stairwells, corridors and atria.
We work across Hertfordshire, including Letchworth Garden City, and in neighbouring towns such as Hitchin and Stevenage. Access, parking and how the glass reaches the roof are all checked at the survey.
Options we can specify in Letchworth Garden City
- Service and test plans
- Rain and wind sensors for daily vent use
- Electric (24 V) or pneumatic actuation
- Glazed rooflight or louvred vent
- Break-glass and smoke-detector triggers
- Also usable for day-to-day ventilation
- Manual override at the fire service access level
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
- Smoke ventilation is designed to the building's fire strategy — we install to that design
Building control and safety duties in Letchworth Garden City
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.
Our planning guide covers each nation in more detail.
Guide prices for Letchworth Garden City
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Letchworth Garden City 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.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
More we do in Letchworth Garden City
Questions about smoke vent rooflights (AOVs) in Letchworth Garden City
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.
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 I need to be at home for the survey in Letchworth Garden City?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Can you work alongside my builder in Letchworth Garden City?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
