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SUNFLEX UK
SUNFLEX UK is an award-winning manufacturer specialising in ultra-slim sliding doors, high-performance bifold doors and advanced aluminium glazing solutions for residential and commercial projects. Renowned for engineering excellence and premium quality, the company combines cutting-edge design with exceptional functionality to create systems that maximise natural light, enhance thermal efficiency and create seamless indoor–outdoor living.
With more than 25 years of experience and standards shaped by its German design heritage, SUNFLEX UK products meet the highest levels of performance, security and durability. The SVG20 and SF80 ultra-slim sliding door systems are the slimmest non-structurally bonded options available, offering expansive glazed panels with minimal sightlines to flood interiors with light and provide uninterrupted views. The German-designed SF75eco bifold doors deliver smooth operation, excellent thermal efficiency and reliable weather resistance, making them ideal for renovations and new-build developments.
The range also includes internal glass sliding doors, slim aluminium windows, Art Deco-inspired steel-look systems, bespoke glass roofs, front doors and commercial moveable wall solutions. Every SUNFLEX UK product is manufactured exclusively in a SUNFLEX factory to ensure exceptional quality. The company also partners with a carefully selected network of glazing specialists nationwide to deliver expert installation and outstanding customer service.
SUNFLEX SF80 high performance sliding doors
The SUNFLEX SF80 is a high-performance, triple-glazed aluminium sliding door system designed to deliver exceptional thermal efficiency, ultra-slim aesthetics and outstanding durability. Engineered to meet Passivhaus standards, the SF80 combines advanced insulation technology with precision German design to create a system that performs as impressively as it looks.
Featuring remarkably slim 30mm sightlines and huge panel sizes up to four metres wide, the SF80 maximises glass area while maintaining structural strength. The result is expansive glazed elevations that flood interiors with natural light and provide uninterrupted panoramic views.
Despite its minimal appearance, the system achieves excellent thermal performance through innovative frame construction and high-specification triple glazing – all without permanently bonding the glass to the frame, avoiding the long-term risks associated with structurally bonded sliding door systems.
Suitable for contemporary new builds, extensions and renovations, the SF80 delivers smooth, effortless operation and industry-leading protection from wind and rain, making it ideal for even the most exposed British locations.
Manufactured to exacting quality standards, the SUNFLEX SF80 is ideal for projects where architectural ambition must be matched by exceptional performance. It delivers the perfect balance of slimline design, Passivhaus-level efficiency and long-term durability.
SUNFLEX SVG20 ultra-slim sliding doors
The SUNFLEX UK SVG20 is an award-wining ultra-slim aluminium sliding door system designed to create uninterrupted views and seamless connections between inside and out. With incredibly narrow 20mm sightlines, the SVG20 delivers a genuinely slim-framed appearance from every angle – not just head-on – allowing you to maximise natural light and fully enjoy your surroundings.
Engineered for both style and performance, the system accommodates large panels up to three metres wide while maintaining effortless operation, advanced security and the premium build quality synonymous with SUNFLEX UK. Unlike most ultra-slim sliding doors on the market, the SVG20 does not rely on structurally bonded glazing. By avoiding permanently bonded glass, individual units can be replaced if required, offering long-term practicality without compromising slim aesthetics.
An innovative flush stacking option allows panels to slide neatly behind one another, creating a clean, contemporary look when open. The system is designed without bulky reinforcing profiles or frames that project away from the glass, ensuring consistently slender lines.
Highly customisable, the SVG20 offers extensive configuration options, from single pocket doors to large eight-panel centre-opening designs, with fixed frames, more than 200 RAL colour choices and a selection of stylish handles – giving you complete design flexibility.
SUNFLEX SF75eco premium bifold doors
For more than 40 years, SUNFLEX in Germany has been at the forefront of aluminium bifold door design and manufacturing, setting international standards for innovation, engineering and performance. The SUNFLEX UK SF75eco continues this legacy, combining outstanding thermal efficiency with elegant, contemporary styling to meet the enhanced demands of modern Building Regulations.
Designed to create wide, uninterrupted openings, the SF75eco allows you to fully connect your home and garden when open, transforming living spaces with light and flexibility. When closed, its advanced frame design and precision engineering work to keep your home warm, secure and protected from the elements.
Manufactured with slender aluminium frames and featuring a patented 44mm thermal break, the SF75eco delivers industry-leading thermal performance. Its intelligent design enables double glazing to achieve levels of efficiency often only possible with triple glazing, with the system even capable of meeting Passivhaus standards.
Independently tested for air, wind and water resistance, the SF75eco also features double rebated seals for enhanced weather protection – ideal for exposed or coastal locations. Whilst the exclusive antiSLAM panel catch ensures safe, controlled operation, protecting both users and hardware for smooth, reliable performance year after year.
SUNFLEX open corner bifold & sliding doors
Designed with an integrated corner post, SUNFLEX UK corner sliding doors and bifold doors can be slid or folded back to create a completely open corner that allows your home to connect with your garden to create the appearance of a room that never ends.
The option to create a completely open corner utilising this aluminium door technology has been available for more than 20 years and in that time SUNFLEX UK has tested and refined the systems to combine the effortless performance and much sought-after look.
Whether you opt to completely cantilever the roof above the doors or incorporate a structural post set inside the doors, the appearance of the corner of the room is that the roof floats above the opening, creating a real ‘wow’ factor and centrepiece of your build.
Depending on the project you can choose from the SVG20, SVG30 or SF80 sliding doors or opt for the SF75eco bifold doors to create a real statement piece of design to your home. For sliding doors you even choose to incorporate a pocket to the inside the external wall to completely hide away the panels when the doors are open.
Contact Sunflex
Get in touch with SUNFLEX UK for more information and to find the right product for your project.
Telephone: 01603 424434
Address: Unit B1 Rhombus Park, Sapphire Way, Norwich NR6 6NN
