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Pitched Roof AOV Skylights
Pitched roof skylight AOVs are often used where roof angle or aesthetics would not suit a standard flat roof smoke vent solution. Units are typically available with a range of flashing options to suit different roof tile types, often in dark grey or black external finishes with a white interior.
Whilst primarily intended for pitched roofs between 15–60 degrees, these AOV rooflights can sometimes also be used on near-vertical mansard roofs or installed onto flat roof kerb adaptors. This makes them a versatile and cost-effective option for a wide range of smoke ventilation projects.
Due to their centre pivoting design, many roof smoke vents achieve high geometric vent area figures for their size whilst also providing natural daylight and comfort ventilation.
Roof Hatch and Rooflight Smoke Vents
Rooflights and hatches for smoke ventilation are designed to open automatically and release smoke and heat from a building in case of a fire. They are designed to comply with BS EN 12101-2 regulations for natural smoke and heat exhaust ventilation.
Rooflight AOV smoke vents can also provide natural ventilation and daylight for the building occupants. They are available in different sizes, shapes, and glass options to suit various architectural deasign requirements.
Typically rooflights or roof hatches are suitable for flat roofs up to 15 degrees and should fully open in less than a minute.
Contact Us to find out more about our roof vents.
Aluminium Flat Roof Louvres
Typically used on the roof of smoke shafts, our aluminium flat roof louvres are durable and weather resistant. The use of aluminium reduces weight and alleviates corrosion.
They are supplied with matching wind shields and surrounds to complete the finish.
The actuators and motors are pre-installed and the whole vent is tested in accordance with EN 12101-2 for use in smoke ventilation systems.
For more advice and to discover our full product range get in touch.
Options and Features for Rooflights
Glazing and finishes
We’re able to provide rooflights with glass or polycarbonate glazing. The glazing can be finished differently.
Clear for maximum light transmission, frosted for privacy, or Opal for solar glare and heat gain prevention.
Flat Glass or Dome
For commercial environments, a typical dome rooflight is quite suitable. But for domestic/home environments it may be preferred to have a flat glass AOV for a better finish.
Thermal Performance
Double glazing is typically used for roof hatches with glass. It offers good thermal performance whilst reducing the weight compared to triple glazing.
Our polycarbonate rooflight domes are either double or triple skinned.
Roof smoke vents are often chosen where there is no suitable external wall opening available or where roof-level smoke extraction provides the most effective solution. Because heat and smoke naturally rise, a roof-mounted vent can be an effective way of ventilating stairwells, smoke shafts and other protected spaces.
The answer usually comes down to whether roof access is required. AOV rooflights are often selected where the primary objective is smoke ventilation and daylight, while roof hatches are commonly used when maintenance access to the roof is also needed.
For single vents the vent will need to have an opening angle of at least 140°. Twin vents that are installed side by side should have each leaf open to at least 90°. This is primarily to reduce damage caused by wind and to ensure adequate airflow.
Yes, we’re able to supply the roof hatch with an offset motor assembly. This will allow you to place a ladder alongside and gain access to the roof when the hatch is open.
BS EN12101-2 is a European standard that specifies the requirements and test methods for natural smoke and heat exhaust ventilators (NSHEVs). The standard covers the design, performance, installation, and maintenance of NSHEVs.
Whether you need a roof AOV for a stairwell, smoke shaft, corridor, or larger smoke ventilation system, we can help you find a compliant and practical solution for your project. Send us your drawings, fire strategy, or project details and our team will help recommend the right roof smoke ventilation solution.