GLASS TERRACE BALCONY
Designed, Supplied & Installed
OVERVIEW
During a visit to a residential development site in Twyford, 360 GSS was presented with an opportunity to turn a complex architectural problem into a showcase of structural ingenuity. The area in question was intended to be a terrace balcony, framed by an unfinished parapet wall and situated above exposed roof joists. While the concept was strong, the execution had fallen short—leaving the site without the structural support required for a frameless glass balustrade. With limited space for any form of traditional subframe and the need to preserve the roof’s structural integrity, a creative and highly technical approach was essential.
CHALLENGE
The core issue was a lack of structural support beneath the terrace area. Traditional methods – such as fixing into brickwork or embedding structural elements within the roof – were ruled out due to both space restrictions and the need to preserve the roof’s waterproofing and insulation performance. Any solution had to meet strict building regulations around thermal efficiency, water retention, and visual impact. The project demanded a bespoke, low-profile approach that wouldn’t compromise the integrity of the roof or breach its membrane.
SOLUTION
360 GSS began with a thorough structural evaluation before proposing a custom-engineered, low-profile steel subframe that could sit freestanding atop the terrace. This innovative design avoided the need to penetrate the roof structure while still providing a strong and reliable base for the balustrade. To comply with building regulations and enhance long-term performance, we recommended the use of a hot melt waterproof membrane combined with high-performance tapered insulation. This ensured the roof remained thermally efficient, fully sealed, and ready to support the installation without altering its profile. The galvanised steel subframe was fabricated with precision to fit the tight space perfectly. Aluminium base channels were securely bolted to the frame, creating a durable mount for the frameless glass balustrade. Each glass panel was toughened and laminated to meet the highest standards of safety and performance. The panels were clamped into place with expert care, preserving the clean, contemporary finish the client had envisioned. To complete the look and provide a hard-wearing, weather-resistant surface underfoot, we installed composite decking on non-compostable joists. The decking not only complemented the overall design but also ensured durability with minimal maintenance.
RESULT
The completed terrace balcony in Twyford exceeded all expectations. The custom low-profile subframe delivered exceptional structural support without compromising the roof’s function or appearance. The frameless glass balustrade provided a modern, unobstructed view, elevating the outdoor space visually and functionally. The composite decking added the finishing touch – stylish, safe, and built to last. From the structural performance to the visual impact, the outcome was a seamless blend of engineering precision and architectural flair. All work was completed to the highest safety standards, with full compliance across thermal and waterproofing requirements.
CONCLUSION
This project is a prime example of 360 GSS’s ability to solve highly complex design challenges with intelligent, tailored solutions. By working within tight spatial limits and meeting rigorous performance standards, we turned a problematic terrace into a standout feature of the development. The Twyford installation is now a showcase of how innovative structural design and careful material selection can bring ambitious architectural visions to life – without compromise.
ALL OF OUR BESPOKE GLASS OPTIONS
SHOWERS
- Walk-in Glass Shower Screens
- Loft & Sloping Enclosures
- Over-Bath Shower Screens
- Sliding Glass Shower Enclosures
- Custom Hinged Enclosures
BALCONIES & BALUSTRADES
- Glass Balconies
- Glass Juliet Balconies
- Glass Balustrades
BANNISTERS & PARTITIONS
- Glass Bannisters & Staircases
- Glass Partitions & Facades