Product overview
Oriel windows are frameless structural glass window projections designed to bring light into a room from multiple directions. Unlike a standard flat window, an oriel window projects from the building, creating a light-filled seating area, viewing space or architectural glass feature.
Using the thermally broken Invisio structural glazing system, Sieger can create frameless oriel windows with minimal visible framing. The glass units are fixed to the base of the window structure and back to the building using the Invisio section, while the remaining glass-to-glass connections can be designed to appear frameless.
Sieger Systems supplies and installs frameless oriel windows and structural glass systems across London, Buckinghamshire, Berkshire, Oxfordshire, Hertfordshire, Surrey, Bath, Bristol and Somerset.
Premium performance
Bespoke made to order
Designed & made in the UK
PRODUCT FEATURES
Product features
Frameless glass projection
Multi-directional light
Thermally broken Invisio system
Tested structural performance
To learn more about additional features:
Technical performance
| System type | Frameless structural oriel window using the Invisio fixing system |
| Profile depth | 63mm Invisio | 72mm Invisio+ |
| Maximum glass thickness | 41.5mm Invisio | 62mm Invisio+ |
| Thermal performance | Expected Uw from 1.1 W/m²K Invisio | 0.6 W/m²K Invisio+ |
| Tested scenario | SC3 / SC7 structural glass scenarios |
| Tested opening sizes | Up to 5m high, with tested widths up to 5.74m depending on wind load |
GLASS OPTIONS
- Double glazed units
- Insulated glass units up to 41.5mm for Invisio
- High-performance glass units up to 62mm for Invisio+
- Low-E coated glass
- Argon-filled insulated glass units
- Solar control glass
- Laminated glass units
- High-strength interlayers
- Coloured interlayers
- Acoustic damping interlayers
