Collection: Fixed roof windows

Fixed roof windows from SkyGlas bring plenty of daylight into the building, without an opening mechanism and with a clear, low-maintenance design. You can choose from frameless or framed models, as well as with double or triple glazing - tailored to the installation situation, thermal insulation, and project requirements.

Identical window system: Differences arise primarily in the upstand and mounting kit
Frameless or framed: depending on aesthetics, structure, and technical requirements
Double or triple glazing and pitched roof: suitable for use, thermal insulation, and project goals
Many standard sizes: directly available in the range
Special dimensions: project-related upon request with technical review

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Flat roof

For flat roofs, the inclined upstand ensures reliable water drainage.

For fixed flat roof windows, the window system itself is fundamentally identical. The crucial difference lies in the upstand and the installation kit. To ensure that precipitation can drain properly, a sloped upstand is used for flat roofs.

Window: identical fixed glazing system
Flat roof upstand: with slope for water drainage
Flat roof installation kit: usually 2-piece
Goal: technically clean connection with reliable drainage

For the correct execution, therefore, not only the window size is crucial, but also the suitable combination of upstand, roof structure, and installation kit.

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Sloping roof

For a pitched roof, the upstand remains straight, while the mounting kit completes the roof connection.

Even with a pitched roof, the actual fixed-glazed window system remains the same. The differences again lie in the accessories: here, an inclined flat roof upstand is not required. Instead, the connection is more aligned with the roof construction, which means the mounting kit is supplemented by an additional component.

Window: identical fixed glazing system
Pitched roof upstand: without additional flat roof slope
Pitched roof mounting kit: usually 3-part
Goal: clean transition to the roof structure and secure integration into the construction

This makes it clear: It is not the window itself that separates flat roofs and pitched roofs, but rather the suitable connection and mounting situation. This is precisely why windows and accessories should always be planned as a coordinated system solution.

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Installation, roof structure and selection briefly explained

Fixed skylights are particularly useful when abundant daylight, a clear design language, and low maintenance are priorities. Selection is based not only on dimensions but also on frame design, glazing, and the appropriate connection solution.

Frameless: minimalist appearance with maximum glass effect
Framed: structurally clearly defined installation situation
Double / triple glazing: depending on thermal insulation and project requirements
Accessories: Upstand and mounting kit must match the roof structure

The decisive factor is therefore always the coordinated combination of window, glazing, upstand, and mounting accessories.

Suitable accessories for clean connections

The quality of a fixed skylight depends not only on the window element itself. Equally important are the appropriate accessory components for construction, sealing, and installation.

Upstands: structural basis for connection, build-up height, and drainage
Installation kits: tailored to the roof structure and installation situation
Interior shading: optional depending on use, light incidence, and comfort preference

Those who plan fixed glazing correctly should always consider the window, upstand, and installation kit together. This way, a single component becomes a technically sound overall solution.

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Frequent questions about fixed roof windows

Here are the most important questions about selection, glazing, installation, and custom skylights for fixed skylights.

1: When is a fixed skylight the better choice?

A fixed roof window is the better choice when abundant daylight, a clean aesthetic, and low technical complexity are priorities. If regular ventilation through the roof window is not required, a fixed-glazed option is often the more economical and low-maintenance solution.

2: What is the difference between fixed roof windows for flat roofs and pitched roofs?

The main difference usually lies not in the window itself, but in the installation context. For flat roofs, the upstand, sealing, and drainage are crucial, while for pitched roofs, the roof pitch, connection, and mounting kit are important. Therefore, the appropriate solution is always planned together with the accessories and the roof structure.

3: Are fixed skylights also available as custom-made skylights?

Yes, even fixed skylights can be implemented as custom-made skylights if standard sizes are not architecturally or structurally optimal. Customization should always be understood as a technically planned project solution.

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