Cantilevered Glass Balconies
Bespoke Design, Structural Engineering & Installation
Architectural impact without visible support.
Cantilevered glass balconies create valuable outdoor space while maintaining a clean, floating appearance, projecting from a building without visible columns or supports beneath.
Unlike conventional supported balconies, cantilevered systems rely on carefully engineered structural connections to transfer loads safely into the supporting building structure.
360 GSS designs, fabricates and installs bespoke cantilevered balconies for private homes, residential developments and architectural projects across London and the Home Counties.
Combining structural engineering support, bespoke steel fabrication and glass balustrade installation, we provide coordinated solutions from initial design through to completion.
Unlike conventional supported balconies, cantilevered systems rely on carefully engineered structural connections to transfer loads safely into the supporting building structure.
360 GSS designs, fabricates and installs bespoke cantilevered balconies for private homes, residential developments and architectural projects across London and the Home Counties.
Combining structural engineering support, bespoke steel fabrication and glass balustrade installation, we provide coordinated solutions from initial design through to completion.
Floating Design
Create usable outdoor space without visible supporting columns beneath.
Structural Expertise
Bespoke steelwork and engineered connections designed around your building.
Complete Installation
Coordinated design, fabrication, glazing and installation for homes and developments.
Cantilevered Balcony Designs & Options
Every cantilevered balcony is designed around the building’s structural capacity, architectural requirements and intended use. Our bespoke systems combine engineered steelwork with a choice of glass balustrades, finishes and decking options.
Available solutions include:
Each system is developed around the supporting structure, loading requirements and appropriate detailing for long-term performance.
Available solutions include:
- Steel cantilever frames: Bespoke structural steel frameworks designed to project from the building without conventional supporting columns beneath.
- Frameless glass balustrades: Minimal visible framing to maximise views and complement contemporary architecture.
- Steel post glass balustrades: Toughened laminated glass combined with steel posts and a choice of protective finishes.
- Residential balconies: Individually engineered solutions for private homes, extensions and renovation projects.
- Development balconies: Coordinated balcony packages for apartments, multi-residential developments and larger construction projects.
- Glass options: Low-iron, tinted and privacy glazing, subject to the project’s structural and safety requirements.
- Decking and finishes: Composite decking, galvanised steelwork and powder-coated finishes to suit the installation environment.
Each system is developed around the supporting structure, loading requirements and appropriate detailing for long-term performance.
our cantilever balcony process
STEP 1
Request a Quote
Share your plans, drawings or project requirements so we can assess the proposed cantilevered balcony and discuss suitable solutions.
STEP 2
Site Survey & Assessment
We review the building structure, proposed balcony position, access and installation requirements to inform the design.
STEP 3
DEPOSIT, Design & Engineering
A 50% deposit secures your project, allowing detailed design, structural calculations and fabrication specifications to progress.
STEP 4
Fabrication & Manufacture
Structural steelwork, glass and associated balcony components are manufactured to the approved project specifications.
STEP 5
Install & completion
Our specialists install the balcony, with structural connections, glazing and finishing details checked as required.
Structurally Engineered Cantilevered Balconies
The floating appearance of a cantilevered balcony relies on careful structural design, accurate fabrication and secure connections to the supporting building.
Unlike balconies supported by columns beneath, cantilevered systems transfer loads back into the building structure. This makes structural capacity, fixing details and the condition of the existing building particularly important.
360 GSS combines structural engineering support with bespoke steel fabrication and specialist glass installation to deliver balcony solutions designed around the requirements of each project.
Key considerations include:
By coordinating the structural steelwork, balcony construction and glazing, we help deliver solutions that balance architectural appearance with practical performance and safety.
Unlike balconies supported by columns beneath, cantilevered systems transfer loads back into the building structure. This makes structural capacity, fixing details and the condition of the existing building particularly important.
360 GSS combines structural engineering support with bespoke steel fabrication and specialist glass installation to deliver balcony solutions designed around the requirements of each project.
Key considerations include:
- Structural loading: Assessing the balcony’s self-weight, anticipated use and environmental loads.
- Supporting structure: Establishing whether the building can accommodate the proposed cantilevered arrangement.
- Steelwork and connections: Designing suitable beams, frames, fixings and structural connections.
- Thermal performance: Considering thermal bridging where structural elements connect through the building envelope.
- Waterproofing and drainage: Detailing the balcony to manage rainwater and protect vulnerable junctions.
- Glass safety: Specifying suitable balustrade systems and safety glazing for the application.
- Building Regulations: Developing structural information to support the relevant approval process.
By coordinating the structural steelwork, balcony construction and glazing, we help deliver solutions that balance architectural appearance with practical performance and safety.
Why choose 360 gss?
Proven Experience
Experience delivering cantilevered balcony installations for private homes and large residential developments.
Specialist Installers
Skilled teams delivering accurate installation, secure structural connections and quality finishes.
Bespoke Fabrication
Structural steelwork and balcony components fabricated around individual project requirements.
Guaranteed Work
Installation workmanship supported by applicable project guarantee terms.
Structural Expertise
Coordinated engineering, steel fabrication and glazing for complex balcony installations.
Complete Project Support
Support from initial design and structural assessment through to fabrication and installation.
FREQUENTLY ASKED QUESTIONS
If you cannot find the answer to your cantilevered balcony questions below, our team is happy to help – call us on 01494 971 694 or email info@360gss.co.uk for expert advice.
Ready to get in touch?
Looking to create a floating balcony with uninterrupted views and no visible supporting columns beneath?
360 GSS designs, fabricates and installs bespoke cantilevered glass balconies for private homes, architectural projects and residential developments.
From structural engineering and steel fabrication to glass balustrades and installation, we provide coordinated solutions across London, Buckinghamshire, Berkshire, Oxfordshire, Hertfordshire, Surrey and throughout the UK for suitable projects.
Contact our team today to discuss your requirements and request a bespoke quotation.
What is a cantilevered glass balcony?
A cantilevered glass balcony projects outward from a building without conventional supporting columns beneath. Its structure transfers loads back into the building, creating a floating appearance while providing usable outdoor space.
What is the difference between a cantilevered balcony and a walk-out balcony?
A walk-out balcony is an accessible outdoor platform, which may be supported by columns, a freestanding frame or a cantilevered structure. A cantilevered balcony is a specific structural design that projects outward without conventional supports beneath.
Can a cantilevered balcony be added to an existing house?
Yes, where the existing building can safely support the proposed structure or can be suitably strengthened. A structural assessment is necessary to establish whether a cantilevered arrangement is practical.
Do cantilevered balconies require structural calculations?
Yes. Cantilevered balcony designs require appropriate structural calculations to assess loads, connections, supporting elements and overall stability. These calculations can also support the Building Control approval process.
What glass is used for cantilevered balconies?
Glass balustrades are specified according to the structural design and safety requirements. Toughened laminated safety glass is commonly used, with low-iron, tinted and privacy options available where suitable.
Do cantilevered balconies require planning permission?
New external balconies will generally require planning permission in England. Requirements depend on the property, location and proposed development, so you should confirm the position with your local planning authority.
How much does a cantilevered glass balcony cost?
Costs depend on the balcony’s dimensions, structural steelwork, supporting building, glazing specification and installation requirements. We provide bespoke quotations based on the individual project.
How long does a cantilevered balcony take to install?
Installation times vary according to the size, structural complexity and site conditions. The overall programme also needs to account for design, structural engineering, fabrication and any necessary approvals.
lOOKING FOR A CANTLEVERED BALCONY INSTALLER NEAR YOU?
Buckinghamshire
Balcony installers in Buckinghamshire deliver tailored solutions for period properties, new-build homes and countryside developments alike.
Berkshire
Balcony installers in Berkshire create bespoke outdoor spaces that maximise views while complementing traditional and contemporary homes.
Hertfordshire
Balcony installers in Hertfordshire deliver practical and attractive solutions that improve outdoor living for homeowners and developers.
Surrey
Balcony installers in Surrey provide high-quality installations that enhance outdoor living across luxury homes and modern developments.
Oxfordshire
Balcony installers in Oxfordshire create stylish outdoor spaces designed to complement village homes, renovations and self-build projects.
London
Balcony installers in London create valuable outdoor space for apartments, penthouses and homes across the capital.
Buckinghamshire
Balcony installers in Buckinghamshire deliver tailored solutions for period properties, new-build homes and countryside developments alike.
Berkshire
Balcony installers in Berkshire create bespoke outdoor spaces that maximise views while complementing traditional and contemporary homes.
Hertfordshire
Balcony installers in Hertfordshire deliver practical and attractive solutions that improve outdoor living for homeowners and developers.
Surrey
Balcony installers in Surrey provide high-quality installations that enhance outdoor living across luxury homes and modern developments.
Oxfordshire
Balcony installers in Oxfordshire create stylish outdoor spaces designed to complement village homes, renovations and self-build projects.
London
Balcony installers in London create valuable outdoor space for apartments, penthouses and homes across the capital.