Technical support
Stratus Flat Skylight Specifications
A low-profile skylight with a separate base and glazed top section. Use internal kerb dimensions when configuring Stratus, and keep the span and slope orientation clear on your drawings.
| Construction | Aluminium exterior with a thermally broken PVC frame and concealed fixings. |
|---|---|
| Standard finishes | Grey RAL 7016, Black RAL 9005 and White RAL 9003, satin finish. |
| Ordering dimensions | Internal face of the kerb. Span and slope are not interchangeable. |
| Manufacturer size matrix | October 2026 guide: from 500 × 500mm, with spans up to 2,792mm and slopes up to 1,500mm. Only the permitted matrix combinations are available. |
| Glazing | 28mm double-glazed units. Confirm glass type and performance for the chosen size. |
| Installation pitch | 4° on the slope (shorter side), as stated in the installation guide. |
| Kerb reference | At least 150mm high; technical guide shows an 80–90mm top width, excluding plasterboard. Confirm the finished weathering detail. |
| Use | Non-walk-on rooflight. The installation guide identifies cases requiring laminated inner glass. |
Check the latest size matrix
The downloadable October 2026 technical guide includes the configuration matrix and the relationship between internal kerb size and glass size. A maximum span and a maximum slope do not mean every combination is available. Use the designer’s available choices and ask us about any size it does not accept.
Coordinate the roof and ceiling finish
Give the installer both the internal opening dimensions and the direction of fall. Discuss how the roof membrane and plasterboard meet the frame before the kerb is built. This avoids using a general rooflight detail that belongs to a different system.
Manufacturer PDF downloads
Open or save the official documents below. Match the guide to the product supplied; follow the instructions supplied with your unit and resolve any difference before installation.
Stratus Flat Skylight installation guide — PDF Stratus Flat Skylight technical guide, October 2026 — PDFOfficial manufacturer documents hosted by Roof Lantern Kits. Copies saved 24 October 2026; confirm the edition matches the product supplied.
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