
Energy-efficient glazing unit U41 (Uw =1.0 W/m²K with dedicated EHV-AT Thermo flashing)
Very good sound insulation Rw=36dB
Automatic air inlet
For rooms with increased humidity
Keep in mind that a flashing is required for window installation.
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The pivot opening system with a mid-height hinge makes ventilation and window cleaning easy and convenient. The sash moves smoothly and stably, and the precise sash guiding mechanism allows for easy and trouble-free closing. The ergonomic handle allows for intuitive operation. The sash can be rotated 180° and locked allowing for safe cleaning of the outer pane. This functional solution guarantees everyday comfort of use.
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The 44 mm thick U41 triple-glazed unit combined with termoPro technology guarantees stable thermal comfort throughout all seasons. The Uw coefficient is rated at 1.1 W/m²K in a standard installation and 1.0 W/m²K with the EHV-AT Thermo flashing. The window effectively reduces energy loss in winter and protects the attic from overheating in summer, helping to lower building operating costs. In addition, flexible seals improve tightness and minimise the risk of thermal bridges. Sound insulation of Rw = 36 dB ensures quiet even in noisy environments, supporting everyday comfort.
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The inner surface of the sash is coated with three layers of white polyurethane varnish (RAL 9003), providing an elegant, smooth and durable finish. This solution makes the window ideal for rooms with high humidity, such as kitchens or bathrooms, maintaining its aesthetic appearance for years. On the outside, modern anthracite (RAL 7016) cladding gives the whole a minimalist character and blends in with contemporary roof architecture, creating a consistent look for the entire building.
Glazing unit U41
The 44 mm thick triple-glazed unit features two low-emission coatings, glazing cavity filled with argon and warm TGI spacer. This gives the window a very good heat transfer coefficient of Uw = 1.0 W/m²K when installed with the Thermo flashing. It provides acoustic comfort of 36 dB, effectively reducing noise and improving relaxation conditions in the attic.

Glass
The extenal toughened glass in the U41 glazing unit is damage-resistant and comes with a lifetime hail warranty. It ensures durability and window protection against extreme weather conditions.

Air inlet
The automatic air inlet used in the window adjusts the amount of incoming air according to wind pressure, reducing excessive drafts and noise. This ensures effective room ventilation while maintaining quiet operation and optimal acoustic and thermal comfort. The air inlet protects the interior from excessive humidity and supports a healthy indoor microclimate.

External cladding
The external cladding was designed in cooperation with the Institute of Industrial Design. Its modern, minimalist form emphasises the aesthetics of the window and harmonises with the roof line. The anthracite colour (RAL 7016) fits perfectly with current architectural trends. The colour consistency of the cladding, accessories and flashings creates a harmonious, elegant set that is resistant to weather conditions.

Internal finish
Carefully selected pinewood, laminated and coated with three layers of polyurethane varnish, which creates a durable, moisture-resistant and perfectly smooth coating in white (similar to RAL 9003). The lack of visible grain emphasises the modern, minimalist style. This finish is ideal for kitchens, bathrooms and anywhere where aesthetics and functionality are important.

Handle
The handle positioned at the bottom of the sash ensures comfortable and natural window operation. It allows easy opening, tilting and closing, and thanks to the micro‑opening function, it enables safe and controlled ventilation of the interior. For larger models (with a width above 98 cm), two handles are used, which makes operating the sash easier and ensures even, airtight closing.

Locking bolt
A special locking bolt allows the sash to be secured in the fully rotated 180° position. This enables safe, comfortable and independent cleaning of the outer pane, without the need to go onto the roof or use professional services. This simple solution makes maintaining and cleaning roof windows significantly easier.

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Our products stand out for what truly matters. Discover the features that make them reliable and exceptional in everyday use.
thermoPro technology

The thermoPro technology provides effective thermal insulation, minimising heat loss in winter and protecting against overheating in summer. This solution guarantees year-round thermal comfort and noticeable energy savings.
topSafe system

The topSafe system enhances security thanks to reinforced window construction and resistance to break-in attempts or accidental opening. Your family gains peace of mind and complete home protection.
Environmentally conscious solution

The window is manufactured from FSC-certified wood and coated with water-based varnishes. Choosing this solution supports environmental protection and the idea of sustainable construction.
Design

The modern design of the cladding, developed in cooperation with the Institute of Industrial Design, emphasises the minimalist aesthetics of the window. Three colours – anthracite (RAL 7016), black (RAL 9005) and grey-brown (RAL 7022) – allow for a consistent match with the roof and accessories.
Durable protection

The U41 glazing unit is a durable solution that provides reliable protection against external factors. The external toughened glass increases resistance to damage and is covered by a lifetime hail damage warranty.

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