Stella Round Flat Roof Window
The Stella Round combines flexible opening systems, a sturdy GRP frame, and an energy-efficient, with fall-through protection to create a high-performance round skylight.
Round flat-roof window with an elegant design
Stella Round opens up new possibilities for daylight design: The elegant, round shape adds architectural flair and brings daylight into living and working spaces. Thanks to fall-through protection on the overhead glazing, the system combines modern design with high safety standards. Available in various standard sizes and glazing options, Stella Round can be used as a fixed or ventilated version to meet any building requirement—and, upon request, with a sloped flashing for optimal water drainage.
Features
Your advantages at a glance
The Stella Round is available in several sizes and can be flexibly adapted to any roof opening using matching fiberglass reinforcement rings—making it ideal for both new construction and renovation projects.
Whether it’s thermal insulation glass, tinted glass, or a combination of tempered and laminated glass for fall-through protection, Stella Rund offers a wide range of glazing options that precisely tailor light transmission, energy efficiency, and safety to the specific project.
The Stella Rund is also available with electric opening systems for convenient ventilation. These systems ensure a reliable, automated supply of fresh air and can be configured to suit the intended use and room height.
Top trim
The double-walled GRP coping with integrated insulation and high insulation values is available in heights of 150, 300, or 500 mm.
A flashing with a 7° slope to ensure proper water drainage on flat roofs without a slope. The height at the eaves is 500 + 15 mm.
Glazing
U-value: 1.3 W/m²K
U-value: 1.4 W/m²K
Sound insulation value: 41 dB
Light transmission: 79%
U-value: 1.3 W/m²K
U-value: 1.4 W/m²K
Sound insulation: 41 dB
Light transmission: 54%
U-value: 0.98 W/m²K
U-value: 0.98 W/m²K
Sound insulation value: approx. 39 dB
Light transmission: 72%
U-value: 0.98 W/m²K
U-value: 0.98 W/m²K
Sound insulation value: approx. 39 dB
Light transmission: 49%
U-value: 1.3 W/m²K
U-value: 1.4 W/m²K
Sound insulation value: 41 dB
Light transmission: 68%
U-value: 1.3 W/m²K
U-value: 1.4 W/m²K
Sound insulation value: 41 dB
Light transmission: 52%
U-value: 0.98 W/m²K
U-value: 0.98 W/m²K
Sound insulation value: 39 dB
Light transmission: 62%
U-value: 0.98 W/m²K
U-value: 0.98 W/m²K
Sound insulation: 39 dB
Light transmission: 48%
References
Insiders who see the whole picture
System architecture
A combination of top-quality components
Stella’s system design combines high-quality materials, precise engineering, and numerous configuration options.
System architecture
The Stella Rund can be opened electrically or manually.
The fiberglass-reinforced plastic (FRP) flashing forms the sturdy foundation of the system. It is also available as an optional FRP sloped flashing with a 7° pitch.
The window sash achieves high energy efficiency through customizable glazing options and meets the fall-through protection requirements of GS-Bau 18 thanks to a combination of tempered and laminated glass. The sleek, flush design ensures a self-cleaning surface and allows rainwater to drain away smoothly. A torsion-resistant multi-chamber profile and a dual sealing system ensure stability, airtightness, and consistently high thermal insulation values.
A: Glazing options / B: Streamlined design / C: Rigid multi-chamber profile / D: Opening systems / E: Top rail / * By using a combination of tempered glass (ESG) and laminated safety glass (VSG), the Stella flat-roof window inherently meets the fall-through protection requirements of GS-Bau 18 and DIN 18008-6. Therefore, no further additional measures are necessary.
Downloads
Do you have questions about industrial buildings?
We support you from the initial concept through to implementation—with well-designed daylighting systems and technical precision. Contact us for a personalized consultation.
INDU LIGHT Produktion & Vertrieb GmbH
- E-mail: deilingen@indu-light.de
- Telephone: +49 7426 52700
Jens Schuler
- E-mail: j.schuler@indu-light.com
- Telephone: 0171 9962951
Christopher Berliner
- E-mail: c.berliner@indu-light.com
- Telephone: 0160 90107127
Stefan Gehring
- E-mail: s.gehring@indu-light.com
- Telephone: 0160 97989512
Andreas Haubold
- E-mail: a.haubold@indu-light.com
- Telephone: 0171 2202447
Mirko Matthias
- E-mail: m.matthias@indu-light.com
- Telephone: 0151 70684249
René Hochstein
- E-mail: r.hochstein@indu-light.com
- Telephone: 0151 41478881
Dominic Stephens
- E-mail: d.stephens@indu-light.com
- Telephone: 0175 8910887
INDU LIGHT Produktion & Vertrieb GmbH
- E-mail: halle@indu-light.de
- Telephone: +49 345 772960
INDU LIGHT West Vertrieb GmbH
- E-mail: coesfeld@indu-light.de
- Telephone: +49 2541 92620