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Opening Rooflight.

Electric & Manual

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Electric Opening Rooflight
1.1
U-Value (W/m²K)
Electric
or Manual
Rain
Auto-Close
Smart
App Control

Fresh air. From above.

An opening rooflight does two things a fixed skylight cannot: it dumps hot air out of the top of the room in summer (natural stack ventilation is massively more effective than side windows), and it satisfies Building Regulations Part F for purge ventilation without compromising an uninterrupted ground‑floor elevation.

Electric variants open at the touch of a button or automatically on a rain sensor. Manual chain‑operated versions are cheaper and fine for rooms with easy ladder access. Both provide the same thermal and acoustic performance when closed.

Opening rooflight detail
Opening rooflight installation

Stack ventilation, for free.

Hot air rises. In a room with only low‑level windows, you cannot get rid of it without fans. An opening rooflight uses natural convection — hot air exits through the top, cool air enters through side windows. Measurably more effective than air conditioning for cooling extensions, and costs nothing to run.

Electric variants can be wired to a thermostat for automatic summer cooling, or integrated with a smart home system (Apple HomeKit, Alexa, Google Home) for scheduled venting.

Specifications

1.1
U-Value (W/m²K)
Electric
Actuator
24V
Motor
Rain
Auto-Close
Toughened
Laminated Glass
Solar Ctrl
Standard
1500×1500
Max Size
Part F
Compliant

Aluminium‑framed opening rooflight with 24V electric actuator or manual chain‑drive operation. Toughened laminated outer, toughened inner, warm‑edge spacer. Integrated rain sensor (optional). Wired for smart home integration. Meets Building Regs Part F purge ventilation requirements and Part L thermal performance.

Electric or manual operation. Rectangular or square. Max 1500×1500mm in single panel. Pitch 5°–45°. Rain sensor, wind sensor, and smart home integration optional. Retrofit kits available for existing fixed skylights.

Colour Options

Available in Black, Anthracite Grey, and White as standard.

Black
Anthracite
White

Full RAL colour range available on request.

APX Casement colours

Interested in the APX Casement?

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