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Contemporary Glass Balcony with Structural Glass Floor

Designed, Supplied & Installed by 360 GSS

OVERVIEW

This project involved the design, engineering and installation of a bespoke glass balcony system for a residential property that had always been intended to feature a balcony. Unfortunately, the previous builder had installed structural steels that were inadequate to support the originally planned cantilevered balcony design.

The homeowners approached 360 GSS to develop a compliant solution that would still deliver the balcony they had envisioned while working within the structural limitations already present in the building.

Following a full structural assessment, our team designed a new balcony system spanning 5.5 metres in width, incorporating a minimal support structure, frameless glass balustrades and a striking structural glass floor that allows natural light to pass into the living space below. From design and structural calculations through to installation and final approval, the entire project was delivered by 360 GSS, including all documentation required for a successful LABC inspection.

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glass balustrade balcony on Surrey

CHALLENGE

The property had been built with the intention of supporting a cantilevered balcony, however the steels installed by the original builder had not been designed or installed to a specification that complied with UK Building Regulations for such a structure. As a result, the balcony could not safely be installed as originally planned. Complicating matters further, the presence of French doors directly beneath the proposed balcony position meant that installing additional structural steelwork within the floor structure would have required major alterations to the property. This would have involved significant disruption to the finished interior as well as considerable additional cost and construction work. The challenge was therefore to develop a structurally compliant solution that worked with the existing building while preserving the clean architectural appearance of the property. The new design needed to maintain open views from the balcony and the garden while also ensuring that the balcony did not reduce natural light entering the living space below.
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SOLUTION

To overcome these limitations, 360 GSS developed a completely new balcony design that worked within the structural constraints of the property while maintaining a minimal and contemporary appearance. Rather than attempting to retrofit a cantilever system, the balcony was engineered as a supported structure spanning 5.5 metres, requiring just two discreet support columns positioned to minimise visual impact while maintaining clean architectural lines and full compliance with building regulations. The structure is supported on helical pile foundations, providing a strong and stable base without the need for extensive ground excavation. Above the steel frame, triple laminated structural glass floor panels with a lightly textured surface were installed to provide slip resistance in wet conditions while maintaining a clear, elegant finish. The perimeter is finished with fully frameless glass balustrades for uninterrupted views, while a discreet drainage system around the glass ensures effective water management without compromising the minimalist design.
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RESULT

The completed balcony provides a spacious 5.5 metre wide outdoor platform that feels open, modern and architecturally integrated with the home. Despite the need for structural supports, the design maintains a remarkably clean appearance thanks to the minimal number of columns and the use of frameless glass balustrades. The structural glass floor has become one of the defining features of the installation. Not only does it add a striking visual element to the balcony itself, but it also allows natural light to pass through into the living room below, preventing the balcony from casting heavy shadows over the interior space. From both the balcony above and the patio below, the views remain uninterrupted, reinforcing the sense of openness while enhancing the property’s connection to the surrounding garden. The project was completed successfully with full structural documentation and a positive LABC inspection, confirming that the new balcony meets all relevant building regulations and safety requirements.
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CONCLUSION

This project demonstrates how careful engineering and thoughtful design can overcome significant structural limitations left behind by previous construction work. By developing a completely new structural solution, 360 GSS was able to deliver a fully compliant and visually striking balcony without requiring major alterations to the home itself. The finished installation combines structural performance with contemporary architectural design, creating a balcony that maximises light, views and usability while remaining seamlessly integrated with the property.
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