UW- value ≤ 1.1
Cortizo Bi-Fold is the only solution that provides opening freedom of up to 95% of the aperture width. While sliding windows always leave part of the opening covered by glass, the Bi-Fold folds panels perpendicular to the frame, completely removing the barrier between your home and the outdoors. This is the ideal choice for summer verandas, pool exits, or restaurants where instant transformation from an enclosed heated space to an open terrace is essential.
Despite the complexity of the mechanism, this is a fully-fledged thermally insulated system with a 73 mm profile depth and thermal break, suitable for year-round living. Cortizo engineers ensured that the bi-fold system remains airtight: multi-contour weatherseals protect against drafts and heavy rain just as effectively as standard windows. The system allows creating impressive structures with up to 14 panels (7 on each side), spanning openings over 15 metres wide.
Article number
300.700.001
Technical Specifications
Details
Bi-fold door system for complete opening of the space. Allows folding the entire glass wall into a compact stack on the side, seamlessly merging the living room and terrace into one unified area without partitions.
Energy efficiency
A+
System type
Folding (Bi-Fold)
Material
Aluminium RPT
Frame depth
73 mm
Max. glazing
up to 45 mm
Thermal protection (Uw)
≤ 1.1 W/(m²·K)
Sound insulation
≈ 45 dB
System structural parameters:
- Installation depth: Frame - 73 mm. Sash - 73 mm.
- Opening type: Folding (Bi-Fold). Panels can fold inward or outward.
- Configurations: From 3 to 14 panels. Option for even or odd number of panels (to create a functional traffic door).
- Thermal insulation: RPT technology. Polyamide thermal breaks up to 30 mm.
- Material: Aluminium alloy 6063 T5.
- Threshold: Option to recess the bottom frame into the floor for barrier-free access.
Glazing options:
- Maximum glazing thickness: up to 45 mm.
- Glazing types: Triple glazed units, safety tempered glass.
Maximum dimensions and mechanics:
- Maximum panel dimensions: Width up to 1200 mm, Height up to 3000 mm.
- Panel weight: up to 120 kg.
- Mechanism: Heavy-duty rollers and hinges ensuring smooth sliding and folding of heavy panels.
Certified performance:
- Window thermal insulation (Uw): up to 1.1 W/m²K (with super-insulating glazing unit).
- Water tightness: Class 9A (excellent).
- Air permeability: Class 4.
- Wind resistance: Class A3.
- Sound insulation: up to 45 dB.
Transformation
Complete wall disappearance
Convenience
Traffic door function
Comfort
Barrier-free threshold
Cortizo Bi-Fold
Bi-fold door system for complete opening of the space. Allows folding the entire glass wall into a compact stack on the side, seamlessly merging the living room and terrace into one unified area without partitions.
Calculate Cost
Estimated manufacturing time 3-6 weeks.
Eligible for NextGen Subsidy -80%
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Available Services
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Delivery to installation site More details
Installation by our specialists More details
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Financing Options
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More detailsDon't Forget to Add
Additional elements and accessories that will make your home even more comfortable
Mosquito Nets
Protect your home from insects, dust, and pollen, allowing you to enjoy fresh air even in the middle of summer.
Handles and Locking Elements
Quality hardware ensures ease of use and security for your windows and doors.
Lamination
Colorful home facades and the desire to decorate your home leads to growing demand for laminated windows every year.
Decorative Elements
Decorative strips and bars allow you to give your windows an individual style, emphasizing the architectural features of your home.
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FAQs
Frequently Asked Questions about Cortizo Bi-Fold
How much space do the folded panels take up?
It depends on their number. Each panel is approximately 7-8 cm thick. A stack of 5 panels will take up about 40 cm of space beside the opening. Panels can fold either inward (to keep them dry from rain) or outward (to save space inside the room).
Will there be drafts through such a complex structure?
Cortizo Bi-Fold is an airtight system. Special multi-fin weatherseals are used at panel junctions, which compress tightly when the lock is engaged, creating a continuous barrier against wind and moisture.
What is the maximum opening width that can be covered?
The system is modular and allows connecting up to 14 panels (maximum 7 on each side). With a maximum panel width of 1.2 metres, the total structure width can reach an impressive 16.8 metres.
Can this be used as the main entrance?
Yes, if you choose a configuration with an "active" panel. It is equipped with a double-sided lever handle set and a full cylinder lock. This is a secure and burglar-resistant door.
Is it difficult to fold the panels?
No, the panels are suspended on heavy-duty bearing rollers. However, the folding process requires a specific sequence: first the locks are opened, then the panels are moved in pairs. This takes slightly longer than simply sliding a sliding door.
How thermally efficient is this system?
Thanks to the 73 mm installation depth and thermal break, Bi-Fold offers excellent thermal insulation (Uw down to 1.1). It is significantly warmer than frameless glazing and is suitable for heated living areas.
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