FAKRO DEF-D Electric Opening Flat Roof Window

The FAKRO DEF-D Electric Opening Flat Roof Window is a premium flat roof rooflight designed to deliver natural daylight, effortless ventilation, and advanced comfort control. Ideal for modern extensions, kitchens, living areas, and commercial spaces, this electrically operated flat roof window combines high performance glazing with smart automation for everyday convenience.

The DEF-D flat roof window is available with a choice of energy efficient glazing options, allowing you to specify the right level of thermal performance for your project. Options include U6 triple glazed highly energy efficient glazing with a U-value of 0.7 W/m²K and U8 quadruple glazed passive glazing achieving an ultra-low U-value of 0.64 W/m²K, making it suitable for both standard builds and low energy or passive style designs.

Electric operation provides smooth, controlled opening at the touch of a button, improving airflow and indoor comfort without manual effort. The roof window is supplied complete with a 150mm insulated UPVC kerb upstand, ensuring a secure waterproofing termination height while helping to reduce heat loss and cold bridging around the roof opening.

The glazing system is engineered for safety, security, and durability. A 6mm toughened external glass pane protects against weather exposure, while the laminated P2A class internal glass enhances security and occupant safety. Acoustic performance is also improved, helping to reduce external noise and create a more comfortable internal environment.

For smart home integration, the DEF-D electric flat roof window is equipped with a Z-Wave wireless control system, allowing seamless connection to compatible smart home setups. A built-in rain sensor automatically closes the window at the first sign of rainfall, offering added protection and peace of mind. The unit is ready to be wired into a 230V power supply for reliable long-term operation.

Internally, the multi-chamber UPVC upstand is finished in RAL 9010 white, providing a clean, modern appearance that suits contemporary interiors. Externally, the step and profiles are finished in RAL 9005 black, with a subtle darkened glazing edge that delivers a sleek, architectural finish when viewed from above.

Suitable for installation on flat roofs with pitches between 2 and 15 degrees, the FAKRO DEF-D electric opening flat roof window offers a refined balance of performance, automation, and design for high quality flat roof glazing projects.

Features & Benefits:

• Electric opening flat roof window providing effortless ventilation
  
• Choice of triple or quadruple glazing to meet energy efficiency targets
  
• U6 triple glazed option achieving a U-value of 0.7 W/m²K
  
• U8 quadruple glazed passive glazing with ultra-low U-value of 0.64 W/m²K
  
• Supplied with a 150mm insulated UPVC kerb upstand for reliable waterproofing
  
• 6mm toughened external glass for strength and weather resistance
  
• Laminated P2A class internal glass for enhanced security and safety
  
• Integrated rain sensor for automatic closing during wet weather
  
• Z-Wave wireless control system for smart home integration
  
• Ready to connect to a 230V power supply
  
• Acoustic performance helping to reduce external noise intrusion
  
• Multi-chamber UPVC upstand finished in RAL 9010 white
  
• External profiles finished in RAL 9005 black with darkened glazing edge
  
• Suitable for flat roof pitches between 2 and 15 degrees