Frameless Oriel Windows: Where Heritage Meets Structural Glass
The oriel window is one of architecture's most enduring forms — a projecting glazed bay that extends outward from a building's wall, capturing light from multiple angles and creating depth and character on even the simplest facade. Our structural glass oriel windows reinterpret this tradition using bonded glass corners, minimal aluminium framing and precision engineering to create all-glass projecting bays that flood interiors with natural light.
Unlike traditional bay windows with heavy timber or PVC frames at every corner, our oriel windows use structural silicone bonding to join glass panels at the corners, eliminating visible frames and creating seamless, uninterrupted views. The result is a projecting glass box that appears to float from the building's facade — a striking architectural statement that works equally well on Georgian townhouses in Richmond, Victorian terraces in Wimbledon and contemporary new builds in Cobham.
Every oriel window is a bespoke, architect-specified element. We produce AutoCAD detailed drawings defining every glass panel dimension, corner bond detail and structural support bracket. Because the oriel projects from the building's structural wall, we work closely with your architect and structural engineer to ensure the support steelwork, waterproofing and drainage are fully integrated into the design.
- Structural silicone bonded glass corners — no visible frame at corners
- Toughened laminated safety glass from 21.52mm
- Minimal aluminium framing on horizontal edges only
- Cantilevered, bracketed or structurally supported configurations
- Double or triple glazed for thermal performance from 1.0 W/m²K
- Suitable for heritage, conservation area and contemporary properties
- Full AutoCAD drawings and structural calculations included
Oriel windows are particularly effective on upper floors where a conventional ground-floor bay extension is not possible or desirable. In conservation areas across Surrey — Guildford, Farnham, Dorking, Reigate — the frameless glass oriel provides a clearly contemporary addition that conservation officers typically welcome, as it creates an honest visual distinction between the historic building and the new intervention.
Heritage and Contemporary Applications
For heritage properties, the frameless glass oriel window offers a planning-friendly solution. Conservation officers and heritage bodies such as Historic England generally prefer contemporary additions that are clearly distinguishable from the original fabric. A glass oriel — with its frameless bonded corners and minimal aluminium — achieves this transparency while adding functional living space and dramatically improved natural light to period interiors.
For contemporary new builds and modern refurbishments, the oriel window creates architectural drama. A projecting glass box on an otherwise flat facade introduces depth, shadow and visual interest. Multiple oriel windows on a single elevation create a rhythm that adds scale and presence to larger residential and commercial buildings.
