GB49 cortizo Bifold Door | Premium Aluminium Folding Doors UK - national supply, survey and installation
Call us: 020 341 10038
Rest of UK: 01768 254552
Email: projects@thefenestrationnetwork.co.uk
Discover the GB49 Cortizo Bifold Door system — a high-performance aluminium folding door from the trusted Cortizo profile family, designed for modern living environments where maximum glazing, architectural style and durability matter.
What Is the GB49 Bifold Door?
The GB49 is an advanced aluminium bifold door solution that offers ultra-slim profiles, large panel capacities and flexible configurations to suit both standard and large openings.
Built using Cortizo engineering but optimised by trade specialists, this system delivers premium appearance and performance for homeowners, architects and developers.
Key Features & Technical Specifications
- Slim sightlines: The central meeting stile measures just 110 mm and the side frame face just 89.5 mm, giving a cleaner, more transparent look.
- Large panel capabilities: Panels can reach widths up to ~1,200 mm and heights up to 3,000 mm in large-format configurations.
- Thermal performance: With the correct triple glazing, U-values can go as low as approximately 0.8 W/m²K.
- Glazing range: Supports glazing units from 25 mm up to 48 mm depth for double or triple-glazed applications.
- Security & weathering: Tested to PAS 24 standards, with Class 4 air permeability, Class E750 water resistance and Class C3 wind load rating in certain configurations.
- Configurations: Available in up to 14 sashes, open-in/open-out, 90° corner options without mullions, and both low-threshold designs for seamless indoor-outdoor transitions.
- Finishes & customisation: Wide choice of RAL colours, dual-colour finishes, anodised effects and premium hardware options.
Why Choose the GB49 Bifold Door?
- Maximised glass, minimal frame — enhances natural daylight and extends visual connection to outside.
- Modern architectural look — slim profiles give a crisp, contemporary aesthetic suitable for renovations and new builds.
- Strong performance credentials — excellent thermal and security specs make it a smart choice for UK climates and regulations.
- Flexible installation options — handles large formats, open corners and premium finishings easily.
- Long-term durability and finish — aluminium construction requires little maintenance and retains its appearance with premium coatings.
Typical Use Cases
Ideal for:
- Contemporary home extensions or glazed garden rooms
- High-end renovations in urban or rural settings
- Large span openings in new builds or remodelled living spaces
- Seamless indoor-outdoor transitions where design is important
- Projects where matching door and window systems deliver consistency across the property
Supply, Installation & Service - national reach
We provide a complete service:
- Site survey & measurement (including structural/threshold specification)
- Bespoke manufacture to your exact size, finish and configuration
- Professional installation by our accredited installers — ensuring correct alignment, sealing and fixings
- Aftercare & warranty support — we back the GB49 with local service and long-term support
CORTIZO GB49 BIFOLD DOORS | FULL PRODUCT REVIEW
Cortizo GB49 Bifold Doors | Fenestration Network
Cortizo GB49 bifold doors – slim 110mm frames, smooth folding action, secure and thermally efficient. Stylish aluminium bifolds for modern UK homes.
GB-49 Cortizo Bifold Doors — Supplied & Installed Across the UK
We provide full supply and expert installation of the GB-49 Bifold Door system by Cortizo nationwide. Whether you’re working on an extension, a renovation or a new build, our installation teams cover all major UK regions with precision and care.
South & South East
GB-49 Cortizo Bifold Doors London, Kent, Surrey, Sussex, Hampshire, Southampton, Home Counties and Essex.
From sleek urban townhouses in London to coastal homes in Sussex, we deliver the GB-49 system with tailored design advice and full installation.
South West & West
GB-49 Cortizo Bifold Doors Devon, Bristol and Gloucester.
Ideal for large openings in barn-conversions or country homes, our South-West installers bring the GB-49 doors with premium finishes and reliable service.
Midlands & Central
GB-49 Cortizo Bifold Doors Birmingham, The Midlands, Northamptonshire, Nottinghamshire, Leicestershire, Derbyshire and Lincolnshire.
Our central UK network serves residential and commercial clients alike, delivering the GB-49 system efficiently and to high standards.
North West
GB-49 Cortizo Bifold Doors Greater Manchester, Manchester, Lancashire, Liverpool, Cheshire, Cumbria and Carlisle.
Whether it’s a city apartment or a countryside property, we supply and install the GB-49 doors across the North West, focusing on high quality and local knowledge.
Yorkshire & North East
GB-49 Cortizo Bifold Doors Yorkshire, Newcastle and the North East.
From high-end renovations in Yorkshire to new build developments in the North East, our teams install the GB-49 system with full project management and aftercare.
Why Partner with The Fenestration Network
Working with us gives you much more than just a door:
- A full supply & installation service across the UK
- Local surveyors and installers backed by national coordination
- Expert design, specification, and configuration support
- Competitive costs without sacrificing quality
- Installation warranty + product warranty for peace of mind
- Proven experience in residential installations
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National Coverage — Wherever You Are in the UK
No matter your postcode — London, Midlands, North West, Yorkshire, Scotland or Wales — our regional installers deliver the same high standards.
PUTTING YOUR MIND AT EASE...
A British Standard that specifies the security performance requirements for doors and windows
the official police security initiative that works to improve the security of buildings and their immediate surroundings
A British Standard that specifies the security performance requirements for doors and windows
quality glazing products, manufactured right here in the UK
the official police security initiative that works to improve the security of buildings and their immediate surroundings
A British Standard that specifies the security performance requirements for doors and windows
the official police security initiative that works to improve the security of buildings and their immediate surroundings
the official police security initiative that works to improve the security of buildings and their immediate surroundings
the official police security initiative that works to improve the security of buildings and their immediate surroundings
10% off all orders placed before 30th November 2025
Applicable only to orders resulting from new quotes produced from 15th October to 30th November, must include full supply, survey and installation and must include any combination of the below:
Windows/ Bi Folding Doors/ Sliding Doors/ French Doors/ Entrance Doors/ Windows/ Garden Studios, Glass Balustrades, Orangeries.