Walk-on glass floorlights with thermally broken frames
The Invisio Floorlight System is a walk-on glass floorlight designed to bring natural light through roofs, floors and lower-ground spaces while maintaining a clean frameless appearance. Its thermally broken hidden fixing detail helps reduce cold bridging, supporting improved insulation and better long-term comfort.
Engineered for pedestrian traffic, the system is suitable for roof terraces, basement lightwells, internal glass floors, external walk-on rooflights and high-end architectural glazing projects where daylight needs to pass safely between levels.
Sieger Systems supplies and installs thermally broken glass floorlights across London, Buckinghamshire, Berkshire, Oxfordshire, Hertfordshire, Surrey, Bath, Bristol and Somerset.
Premium performance
Bespoke made to order
Designed & made in the UK
PRODUCT FEATURES
The invisio floorlight system features
Walk-on glass design
Engineered glass panels support pedestrian traffic while allowing daylight to pass between levels.
Thermally broken fixings
Hidden aluminium fixings with polyamide thermal breaks help reduce cold bridging.
Frameless appearance
Concealed fixing details create a clean glass finish with minimal visible framing.
Slip-resistant finishes
Sandblasted, ceramic frit or specialist anti-slip glass finishes are available.
To learn more about additional features:
Technical performance
| Pedestrian loading | Up to 1.83 kN/m² |
| Thermal performance | Uw values up to 1.2 W/m²K |
| Maximum pane size | Recommended 1.5m x 3m per pane, with larger sizes possible |
| Glass build-up | Up to 62.5mm thick with laminated outer and low-E inner panes |
| Fixing detail | Hidden aluminium profile with full polyamide thermal break |
| Slip resistance | Sandblasted, ceramic frit or specialist anti-slip glass available |
GLASS OPTIONS
- Walk-on laminated glass units
- Low-E insulated glass units
- Argon gas filled glass cavities
- Sandblasted slip-resistant glass
- Ceramic frit slip-resistant glass
- Specialist anti-slip glass
- Switchable tinted glass
- Heated glass
Real projects
View our products in action.