Sunflex Frameless Glass Systems in Johannesburg, Midrand, Centurion and Pretoria
Bring in the light with Sunflex frameless folding and sliding doors, designed for open, elegant living spaces.
At Alu-Decor, we supply and install German-engineered SF20 and SF25 frameless systems, trusted for their quality, precision and timeless beauty.
Whether you’re enclosing a patio, extending a living room, or upgrading a restaurant front, our frameless glass systems turn open spaces into architectural features.
SF25
Why Choose Sunflex Frameless Systems from Alu-Decor
Sunflex is known worldwide for its engineering excellence — combining minimalist design with robust construction.
Our frameless glass doors are made with European-quality materials and installed with precision by our experienced team.
What makes them stand out:
- German-engineered SF20 and SF25 frameless technology
- Smooth sliding or folding operation
- Weather-sealed with HBS waterproof aluminium systems
- Custom sizes for residential or commercial use
- Crystal-clear panels for uninterrupted views
- Adds value, elegance and light to any property
Our Frameless Glass Door Range
Sunflex SF20 Frameless Sliding Doors
The SF20 frameless sliding door system allows multiple glass panels to glide effortlessly on parallel tracks, creating wide, open spaces.
Perfect for patios, restaurants and modern homes where flow and visibility matter.
Features:
- Individual panels slide independently
- Flush floor tracks for seamless transitions
- Precision bearings for silent, smooth motion
- Ideal for large openings with minimal visible framing
Sunflex SF25 Frameless Folding Doors
The SF25 frameless folding door combines the functionality of a bi-fold with the elegance of full glass panels.
It’s known for German quality engineering and European craftsmanship that ensures years of flawless operation.
Features:
- Folding panels stack neatly to one or both sides
- Magnetic closure and continuous sealing system
- Can open inward or outward
Frameless Stacking Doors
Our frameless stacking doors are designed to transform patios and entertainment spaces.
Each panel glides on its own track and stacks smoothly, creating a completely open transition between indoors and outdoors.
Features:
- No vertical frames between panels
- High-strength tempered glass
- Perfect for enclosed patios and entertainment areas
Design and Customisation
Each installation is made to measure. Choose from sliding, folding configurations with clear, tinted or frosted glass options.
All aluminium profiles are powder-coated to your chosen finish — black, white, bronze, silver or custom colours.
We also offer integrated locking systems and track designs for smooth, secure operation.
What Choose Sunflex
SF25 Operation
Single door access for daily use
Panels independently slide and turn to stack
Large openings created with little fuss
Geometries
The horizontal running mechanisms of the SF25 allows for the glass panels to be operated through any angle between 90° and 180°. The direction in which the SF25 slide & turn system opens can be chosen as required.
Single door access for daily use
Panels independently slide and turn to stack
Large openings created with little fuss
Height compensation profile allows a height adjustment of up to 22 mm
Screwed glass; glass thickness 8 or 10 mm possible
Completely stainless carriage system. Available for coastal climates
Bottom hinge wheel for extra support
Optimal panel guidance without guide arm when opening and closing
Reinforced joining pins for extra corner stability
Panel Size Diagram
System Information
- Choice of 8mm or 10mm Toughened Safety Glass.
- Low-wear and maintenance free fittings.
- Various bottom tracks and handles.
- Pressure-free drainage of bottom track by inclined floor construction.
- Catch channel on the inside of the bottom track to drain
condensation water and cleaning materials. - Top-Hung construction allows for years of smooth operation.
- The running assemblies each feature three smooth-running needle bearings and two polyamide rollers.
- Inward or outward opening of the panels possible.
- Choice of panel partition and sliding direction.
- Height compensation of up to 22 mm (±11 mm).
- Double brush seal with plastic bridge at top and bottom of the glass panels.
- Screwed glazing fixings allows for quick replacement of
panels. - Double locking device.
- Weatherproof.
System Testing
- AAAMSA 613 test cert. no D1433.
- Safety test class 3 in compliance with DIN EN 12211/12210*.
- Airborne sound insulation up to Rw = 34 dB in compliance with DIN EN ISO 140-3**.
- Wind loading – 8mm glass 1800Pa.
- Wind loading – 10mm glass 3000Pa.
- Toughened Safety Glass in accordance with SABS.
- Glazing certification – 8mm up to 2500 high.
- Glazing certification – 10mm up to 2800 high.
- Energy performance compliance with SANS 10400 part XA
Geometries
The horizontal running mechanisms of the SF25 allows for the glass panels to be operated through any angle between 90° and 180°. The direction in which the SF25 slide & turn system opens can be chosen as required.
Expert Installation and Support
Our installers are trained in Sunflex SF20 and SF25 systems to guarantee a perfect fit and flawless movement.
We serve clients across Johannesburg, Midrand, Centurion and Pretoria, handling residential and commercial projects with precision and care.
Get a Quote for Frameless Glass Systems
Transform your space with the best frameless folding doors in South Africa.
Our Sunflex systems combine style, performance and German quality you can trust.
📞 +27 82 444 0059 | 💬 WhatsApp Chat | 📧 sales@alu-decor.co.za