
Heat transfer coefficient Uw=0.64 W/m²K
Wirelessly controlled via remote control
Suitable for installation on pitches from 2° to 15°
Suitable for installation on an additional XRD or XRD/W base
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Brighten up your interior with the DEF DU8 Z-Wave window, designed for flat roofs and combining convenience, elegance and excellent performance. It is the perfect choice for rooms where natural light and airtightness are a priority. The DU8 glazing unit guarantees safety and very good insulation parameters, while the large glazing area visually enlarges the space. Multi-chamber PVC profiles filled with insulation ensure durability and resistance to weather conditions. The flat finish with an elegant glass segment emphasises the building’s modern style, bringing aesthetics and functionality into one.
![DEF DU8 Z-Wave - Descriptions[1]](/_next/image?url=https%3A%2F%2Fcdn-pim.gofakro.com%2F%2FStrony%252520WWW%2FOkna%252520do%252520dach%2525C3%2525B3w%252520p%2525C5%252582askich%2FOkna%252520%252520typu%252520F%2F%252521%252520Opisy%2F01.webp&w=1920&q=75)
The DEF DU8 Z-Wave model allows the sash to be opened by 12 cm using an app, significantly improving the comfort of everyday window use. A rain sensor automatically closes the sash when it rains, protecting the room from moisture. The quadruple-glazed DU8 unit guarantees excellent thermal insulation rated at Uw = 0.64 W/m²K, reducing heat loss in winter and protecting against overheating in summer. Toughened outer glass, laminated inner glass in class P2A and multi-chamber PVC profiles filled with insulation ensure durability and safety regardless of the conditions outside.
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The DEF DU8 Z-Wave window is designed for installation on flat roofs with pitches from 2° to 15°. If the roof pitch is less than 2° or it is advisable to increase the installation angle, use the XRD-A angled installation base. For green, gravel or ventilated roofs, use the XRD and XRD/W installation bases, which raise the window above the finishing layers and facilitate proper water drainage. The simple, elegant form of the DEF window fits perfectly with modern architecture. The window can be equipped with internal accessories and an external awning blind to reduce heat build-up.
Glass with steppe
The D_F flat roof window combines functionality with elegant design inspired by contemporary architecture. The standard version features glass with a black steppe, which emphasises its minimalist character and blends in perfectly with the structure of modern buildings. Additionally, the window is available in the ColourLine version, which allows for personalisation thanks to a wide range of 200 RAL Classic colours, ensuring consistency with the roof colour and the character of the building.

Glazing unit DU8
The DU8 triple-chamber glazing unit is a solution dedicated to passive construction. Thanks to its exceptionally low heat transfer coefficient of 0.64 W/m²K for the entire window, it effectively reduces heat energy loss. The internal P2A laminated glass ensures a high level of safety, protecting the interior in the case of breakage. The external toughened glass is covered by a lifetime hail resistance warranty, which guarantees durability and reliability in all weather conditions.

Frame
The window structure is based on a frame made of white PVC profiles (RAL 9010) with a multi-chamber design, filled with insulating material. As a result the frame is highly resistant to moisture and cleaning agents, which makes it ideal for rooms with high humidity, such as bathrooms or laundry rooms. The entire structure is durable and requires no regular maintenance, and its light colour scheme makes it easy to match with a variety of interior designs.

Actuator
The integrated electric drive operating in Z-Wave technology ensures comfortable everyday use, enabling convenient remote operation with both a remote control and a wall switch. The sash can be opened to 120 mm, allowing for effective ventilation. The durable construction of the mechanism ensures a long service life, and the possibility of integration with home automation further enhances user comfort.

Rain sensor
When rainfall is detected, the ZRD rain sensor mounted on the window sash sends a signal to the actuator, triggering the automatic closure of the roof window. The rain sensor is a practical, convenient solution that increases safety and comfort in everyday use. It is maintenance-free, requires no programming and effectively protects the interior from flooding, even when the occupants are away.

Our products stand out for what truly matters. Discover the features that make them reliable and exceptional in everyday use.
Year‑round comfort of use

A stable frame made of multi‑chamber PVC profiles filled with thermal insulation material helps maintain proper indoor conditions inside the building. In practice, this results in improved user comfort, especially when replacing older solutions with modern windows offering enhanced performance parameters.
Structural durability

Flat roof windows are equipped with advanced glazing units, in which the external pane is made of toughened glass, while the internal pane features P2A safety classification. This solution increases resistance to damage and, in the event of glass breakage, significantly reduces the risk of hazardous fragments.
Maximum interior daylighting

Modern buildings with flat roofs do not have to mean limited access to natural daylight, as the use of properly designed windows allows interior spaces to be effectively illuminated. Thanks to specially engineered profile construction, the glazed area can be increased by up to 16%, resulting in noticeably brighter and more comfortable interiors.

Instructions
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Instructions