Visofold 6000 Bi-folding Doors
Open up your home with beautifully engineered aluminium Visofold 6000 bi-fold doors designed to maximise light, improve thermal performance and deliver long-term security.
Contemporary Aluminium Bifold Doors
Visofold 6000 Aluminium Bifold Doors
Slim frames. Bigger views. Flexible living.
The Visofold 6000 system combines slim sightlines, strong aluminium profiles and flexible opening configurations, making it ideal for contemporary extensions, renovations and new builds. Designed to maximise natural light and connect indoor and outdoor spaces, it offers modern thermal performance, security and everyday practicality.
Design, Performance & Security
Visofold 6000 Key Features
Engineered for contemporary homes, with flexible opening options, slim aluminium profiles and practical features for everyday living.
Flexible Folding Operation
Door panels move to the side and swing open, creating wide openings between your home and garden.
Slim Aluminium Sightlines
Slim profiles and discreet hardware maximise glazing and natural light, with a typical 94mm sightline.
Building Regulations Compliance
Designed to meet applicable building regulations when correctly specified and installed.
Dual-Colour Finishes
Choose different internal and external colours to complement your interior and exterior design.
High-Security Locking
PAS 24:2016-approved configurations available, with robust multipoint locking and high-security glazing options.
Accessible Threshold Options
Low or rebated threshold options help improve accessibility and create easier transitions.
The Benefits
Why Choose Visofold 6000?
A versatile bifold door system designed to bring more light, comfort and flexibility to modern living spaces.
Slim Frames. Bigger Views.
A typical 94mm sightline keeps the focus on the glass, maximising daylight without compromising strength.
Warm & Energy Efficient
Polyamide thermal breaks and U-values from 1.4 W/m²K, depending on glazing specification.
Strong & Secure
Multipoint locking, shoot bolts and high-security cylinder options for added protection.
Flexible Opening Options
Inward or outward opening panels with multiple stacking configurations to suit your space.
Low Threshold Options
Rebated or low/flush threshold options for improved accessibility and easier access to patios and gardens.
Sightlines, U-values, security certification, threshold options and building regulation compliance depend on the selected door configuration, glazing and installation specification.
Visofold 6000
The Visofold 6000 slide and fold door offers extremely slim profiles which are perfectly suited to residential properties where narrow sight lines and maximum glass areas are required
Low threshold custom design option for unimpeded easy access tailored to your individual specification, which ensure the perfect finish at floor level or rebated thresholds that improve weather resistance.
Visofold 6000’s flexibility also makes it suitable for commercial projects.
Where large opening apertures are required, the system offers maximum light and space to give unimpeded views.
This highly-versatile, easy-to-operate system is the perfect option for even the largest project. Capable of opening up an entire wall, yet presenting a contemporary, elegant glazed façade when closed.
The system features a choice of internally or externally folding sashes, which when open, sit flush to the frame. Sashes are hung from a floating mullion and slide on a recessed bottom roller and top guide. This allows for ultra-slim profiles, smooth operation and robust security.
Very pleased with the quality of the two sets of Smart Visofold 6000 bi-fold doors to replace our existing uPVC French doors with glazed side panels. The narrow sightlines are a great improvement on the old frames, allowing more light to flood in and are visually are much cleaner and simpler. Cost-wise Marlin is very competitive in relation to other manufacturers.
Gregory King – Boston Spa, Wetherby
Product Information
Slide & Fold Door
- Space-Saving Design – Door panels fold neatly to one side in a concertina style, maximising available space.
- Smooth & Effortless Operation – Engineered for easy, reliable and seamless opening and closing.
- Slim, Elegant Profiles – Sleek frames maximise natural light and create wider, unobstructed openings.
- Seamless Indoor-Outdoor Living – Effortlessly connects interior and exterior spaces, creating a bright, open and inviting environment.
With high-security glazing, robust locking mechanisms (including multi-point locks on the main opening sashes, and shoot-bolts on the floating mullions), an unrivalled colour range and the option of colour-matched accessories, the system can be tailored to meet each project’s specific requirements.
Delivering the perfect combination of strength and performance, Visofold 6000 profiles feature a polyamide thermal break that enhances the system’s thermal performance. High quality PDM gaskets and weather brushes aid weather resistance.
Fully compliant with the requirements of Building Regulations Document L 2010, the doors have the option of either low thresholds for unimpeded, easy access, or rebated thresholds that offer improved weather resistance.
Technical Specification
Technical Performance
| U Value | 1.4W/m2K using a 0.9 centre pane |
|---|---|
| Air | Class 2, 450Pa |
| Water Class | 8A, 450Pa; |
| Wind Class | 3, 1200Pa |
Design Specification
| Frame Width | 88mm |
|---|---|
| Frame Depth | 76 or 82mm |
| Glazing | 28mm |
| Typical Sight Line | 94mm for Slide and Fold Door |
| Max Sash Height | 2200mm |
| Max Sash Width | 1000mm |
| Max Sash Weight | 100KG |
Sizes & Configurations
The Visofold 6000 is suitable for openings up to 6000mm wide, making it perfect for large rear extensions and open-plan living areas.
Maximum sash sizes:
- Width: up to 1000mm
- Height: up to 2200mm
- Weight: up to 100kg per sash
Available in 2–7 panel configurations with:
- Left or right stacking
- Split stacking options
- Traffic door (everyday access without opening the full set)
Not sure what configuration you need? Our team can advise during your survey.
Professionally Installed by Marlin
Choosing the right product is only part of the equation. Proper installation ensures long-term performance, security and weather resistance.
When you choose us, you benefit from:
- Made-to-measure manufacturing
- Experienced installation teams
- Clear communication from survey to completion
- Aftercare support
Find out more about our installation service and the areas we cover.
Thank-you Marlin Windows for a great job! You designed and built all the windows in our renovation project including sliding doors and bi-folds with care and consideration. From our first contact with Adrian through to the final fitting, the service was exceptional…
Premium Security Fitted As Standard With Patented Active Cam Technology
The clever locking system of the Avocet ABS® diamond grade cylinder knows when it has been snap attacked and fires into action to create a robust barrier to entry. The patented Active Cam TechnologyTM is hidden deep within a solid Molybdenum cam which is 20% stronger than steel, and delivers ultimate resistance against a lock snapping attack and snap/twist manipulation. All of the snap technology is focused on the outside part of the lock only. This makes sure that maximum strength is given to the inner part of the lock – the part that has the job of securing your door.
COLOURS AND GLAZING
Our aluminium profiles are polyester powder coated by our systems suppliers using the very latest paint application techniques guaranteed for 25 years.
Fully compliant to the latest June 2022 building regulations our standard double glazing is the exceptional light transmitting, energy saving ClimaGuard® A+ low emissivity (Low-E) glass manufactured by Guardian Glass.
Helpful guides
Low & Flush Thresholds For Aluminium Bi fold and Sliding Doors
Your detailed guide to getting the fabulous seamless appearance of a flush threshold.
Latest projects
CONTEMPORARY WINDOWS
Contemporary Aluminium Glazing, Louper Weir, Lake District – New Build
BI FOLD DOORS
The Art Studio, Bifold Doors – Addingham
CONTEMPORARY WINDOWS
Marston Lodge Farm, Vale of York
Ready to transform your home?
Get a made-to-measure quote for your Visofold 6000 bifolding doors today. Our team will guide you through sizes, styles and glazing options to find the perfect fit for your home.
Or call us on 01535 603909 to speak with our team.
Frequently Asked Questions
If you require any support, please don’t hesitate to review our FAQs below or drop us a message on our contact form here
What are the maximum dimensions and panel configurations?
The Visofold 6000 system supports very large openings. It accommodates total door widths of up to 6000 mm and individual sash sizes up to 1000 mm wide by 2200 mm high, with sash weights up to 100 kg. Whether residential or commercial, it can be built from as few panels as possible to maximise sight lines
How secure and energy efficient are these doors?
Security is enhanced with multi-point locking on the main sashes and shoot-bolts on floating mullions, paired with high-security glazing. The aluminium profiles are thermally broken using polyamide, boosting insulation. Standard U‑values range from about 1.4 to 1.5 W/m²K, meeting UK building regulations.
What design options and ease-of-use features are available?
Thanks to its ultra‑slim sight lines (only 94 mm mullion width), the Visofold 6000 delivers a sleek, modern aesthetic. It offers dual-colour finishes, a range of RAL/textured colours, double or triple glazing, flush or rebated thresholds, and the choice of inward or outward folding panels. High-quality rollers, top guides, magnetic catches, and stainless steel wheels ensure smooth operation
Come and explore…
Aluminium Bi-fold Doors, Sliding Doors, Contemporary Glazing, Aluminium Heritage Windows and Traditional Steel Replacement Doors
