Aluminium Bi-Fold Plus Doors
Advanced Aluminium Bi-Fold Doors for Trade & Commercial Projects
Granada is proud to manufacture the Cortizo Bi-Fold Plus, an evolution in bi-fold door systems that combines sleek design with exceptional performance. Engineered for both commercial and high-end residential applications, the Bi-Fold Plus offers unparalleled thermal efficiency, security, and design flexibility.
| Property | Standard | Class / Value |
|---|---|---|
| Thermal Transmittance | EN ISO 10077-2 | Uw ≥ 0.97 W/m²K |
| Air Permeability | EN 12207 | Class 4 |
| Water Tightness | EN 12208 | Class 9A |
| Wind Resistance | EN 12210 | Class A3 |
| Security | PAS 24 | Test Passed |
Tested on configuration: 3 sashes – 2,701 mm x 2,517 mm
Our Cortizo Bi-Fold Plus system offers a wide variety of high-quality finishing options to complement any project design. With a choice of premium powder-coated colours, anodised finishes, and dual-colour options, your bi-fold doors can be tailored to suit both interior and exterior styles.
The durable finishes not only enhance the appearance of the frames but also provide excellent resistance to weathering and corrosion, ensuring long-lasting performance with minimal maintenance. Whether you’re aiming for a sleek, modern look or a finish that blends seamlessly into a traditional environment, we have the ideal solution for you.
For full details on all available finishes and colour options, please download our Bi-Fold Plus brochure here.
Our bi-fold doors are designed with bespoke drainage sub cills and precision-engineered profiles to ensure superior water management and thermal performance. The system features carefully designed drainage paths that effectively channel water away, reducing the risk of water ingress even under severe weather conditions.
Additionally, the profiles come with pre-assembled gaskets, simplifying installation and increasing the reliability of weather sealing. Options such as in-pocket configurations, open corners, and hidden track solutions further enhance design flexibility while maintaining excellent structural integrity.
For technical specifications and detailed diagrams, please download our Bi-Fold Plus brochure here and our Cor Vision system brochure here.
Why choose Granada’s Cortizo Bi-Folds?
At Granada, we don’t just supply aluminium bi-folding doors — we manufacture them in-house using the trusted Cortizo Bi-Fold Plus system, combining European precision engineering with our own rigorous production standards. This allows us to maintain complete control over quality, lead times, and customisation — ensuring every door set is tailored to meet the demands of modern trade and commercial projects. Choosing Granada means choosing a product that’s not only PAS 24 certified and performance-tested, but also backed by the support and technical expertise of one of the UK’s leading aluminium system specialists.
- Enhanced Thermal & Acoustic Performance
- Slim Sightlines for Maximum Glazing Area
- Built for Large & Demanding Openings
- Adjustable Jambs
- Certified to UK Security & Weather Standards
- Effortless Floor-Level Integration
- Extensive Colour & Finish Options
Adjustable Jambs for Effortless Installation
Designed to address on-site variances and speed up fitting, our Cortizo Bi-Fold Plus includes adjustable jambs, allowing for fine-tuned alignment without compromise. Ideal for both retrofits and new builds, this detail solves one of the most common installation challenges.
Slimmer Sightlines, Greater Glazing Area
With a reduced central meeting stile of just 110 mm, the Bi-Fold Plus maximises natural light and enhances the open-plan feel. The slimmer frame design doesn’t compromise on strength — making it ideal for contemporary architecture that values visibility and minimalism.
Advanced Thermal & Weather Performance
Featuring a 45 mm polyamide thermal break and glazing support up to 48 mm, this system delivers U-values as low as 0.8 W/m²K. It’s certified Class 4 for air permeability, Class 9A for water tightness, and Class A3 for wind resistance — making it ideal for high-performance builds and exposed locations.
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