Flat roof windows – Floating Light

Flat roof windows by FAKRO are an excellent solution to illuminate the interior with natural light when it is impossible to install vertical windows or there is not enough light in the room. One of the key benefits provided by these windows is their high thermal insulation performance, which is important for the natural environment and our wallets as well. Thanks to natural light, interiors come to life and create a harmonious aura having positive impact on the well-being of residents. Windows feature high resistance, maintaining their functionality and appearance for many years to come irrespective of intense sunlight, rain or snow.

FAKRO offers a wide range of windows for flat roofs to meet a variety of customer needs and preferences. Manually and electrically opened versions allow for full control over the airflow, while non-opening models are ideal for rooms where the priority is only to bring in natural light. They stand behind excellent lighting and impeccable aesthetics.

Look at the light coming from above. It moves, changes and reflects giving a new look at…

... your health and well-being

The flow of light through windows fitted in the roof helps to regulate our circadian rhythm, affecting the quality of sleep, improving mood and boosting energy during the day. It has also a positive influence on our productivity, concentration and creativity. Specially designed shapes of the sash and frame profiles make flat roof windows offer up to 16%  bigger glazing area when compared to solutions of the competition. FAKRO windows create comfortable interiors that are bright, spacious and full of harmony.

... your safety

Glazing units applied in our windows are resistant to hail and come with the highest impact resistance class. The Secure type flat roof windows are compliant with the European burglary resistance class RC 2 as per EN 1627. This means that they are equipped with additional security features that hinder or delay burglary attempts, providing residents with a sense of security and protection of their home. They are characterised by a very high class B reaction to fire according to PN-EN 13501-1, thus minimising the risk of fire spreading.

... savings

Both money and energy. FAKRO flat roof windows are distinguished by their high thermal insulation properties. They prevent heat loss in winter and excessive heat penetration in summer. Their excellent insulation performance allows us to reduce the energy consumption needed for space heating. This is not only good for our wallets, but also makes a positive contribution to environmental protection, which goes so well with the spirit of the GO GREEN philosophy.

... your comfort

Our offer comprises a wide range of internal and external accessories for windows mounted on flat roofs that significantly enhance
the comfort of staying in glazed rooms. The AMZ external awning blind provides excellent control over the amount and intensity
of the incoming light, while the ARF/D internal blackout blind protects against harsh sunlight and adds to interior design.

... non-standard and innovative projects

In addition to standard sizes, type F & type G windows can be manufactured in custom dimensions that can be perfectly matched to individual preferences and requirements. In response to higher insulation standards, we enable the replacement of old flat roof windows with new ones, regardless of their size.

... not only on the roof

The DXW innovative flat roof window was acknowledged with the prestigious ICONIC AWARDS 2018: Innovative Architecture - Best of Best. Its specially strengthened sash and frame enable it to be installed completely flush within the roofline. With special design features such as enhanced load-bearing capacity and a lasting, non-slip glass you can walk across its surface freely.


Flat roof windows are available in three versions:

Type F

DEF - electrically opened

DMF - manually opened

DXF - non-opening

Type C

DEC - electrically opened

DMC - manually opened

DXC - non-opening

Type G

DEG - electrically opened

DMG - manually opened

DXG - non-opening


The main advantages of flat roof windows:

Energy-efficient design

Energy-efficient design

Due to their special design, FAKRO flat roof windows provide excellent insulation parameters. Windows are available with a single, double and triple chamber glazing units. Additionally, the type C flat roof windows are available with the dome.

The type F flat roof window is available with a triple chamber DU8 glazing unit. Heat transfer coefficient for this window is U=0.64 W/m2K according to EN 14351-1 which makes the window suitable for use in energy-efficient and passive buildings.

The type C flat roof window with a triple chamber, passive U8 (VSG) glazing unit features heat transfer coefficient U=0.55 W/m2K according to EN 1873 (for a size 120x120cm). This is an excellent parameter relating to the entire window (frame with the sash and dome). The use of this type of glazing units allows for large thermal savings during cold days and lower heating costs.


High safety

High safety

The DMF DU6 Secure, DXF DU6 Secure, DMC P4 Secure and DXC P4 Secure flat roof windows comply with European 2nd anti-burglary class RC 2 N as per EN 1627. In addition, flat roof windows are distinguished with the highest impact resistance class SB 1200 according to EN 1873. Installation of this type of windows in the roof considerably enhances safety and anti-burglary resistance of the building.


Ample natural light

Ample natural light

The purpose of the window is to provide natural light to interiors under the flat roof. Thanks to specially designed shapes of the sash and frame profiles flat roof windows are characterised by even up to 16% greater glazing area when compared to solutions of the competition. With such solution any room under the flat roof is abundant in daylight.


Non-standard sizes

Non-standard sizes

In addition to standard sizes, the type F window can be manufactured in non-standard size (in the range between 60x60cm - 120x220cm). Thermal insulation standards of buildings have been significantly increased and old skylights in flat roofs do not meet current requirements in this scope. Possibility of preparing the type F window for accurate, often non-standard size allows for easy replacement of the existing skylights and improvement of insulation parameters of the entire building. Taking advantage of such opportunity gives high flexibility when designing buildings or when carrying out their renovation.


Accessories and control

Accessories and control

Installation of an appropriate internal as well as external accessories enhances functionality and aesthetics of windows in the flat roof. Awning blinds protect the room from overheating, while internal accessories ensure protection against intense sunlight and enhance interior design.

Electric flat roof windows are controlled by means of a remote control in wireless Z-Wave system. The actuator is positioned in the sash which reduces influence of adverse weather conditions, thus increasing its useful life and trouble-free operation. In addition, windows have built-in rain sensor which automatically activates the sash closing function when the first raindrops appear.



  • the frame of the flat roof window is manufactured with multi-chamber PVC profiles.

  • the internal surface of the frame is white (RAL 9010).

  • the material from which profiles are made have a high resistance against acids and very low moisture absorption, therefore the window can be installed in every room.

  • profiles are filled inside with insulating material, thus additionally improving the energy saving parameters of the product.

  • the specially profiled covering material under the frame drip cap facilitates the finishing of the window connection with the roofing material.

Flat roof windows type C and type F


The servo-motor in electrically opened windows is positioned in the sash and is protected against adverse weather conditions such as rain and snow.
This ensures trouble free operation of the servo-motor and all control elements.

Flat roof windows type C and type F


The electrically operated windows (type F and type C) have a built-in sensor that automatically activates the sash closing function when it rains.

Flat roof windows type C and type F