Aluminium windows and doors

BI-FOLD DOORS

Up to 14 leaves folding fully to the side, with a 90º corner and no mullion.

A bi-fold door solves something different from a slider: it does not leave the leaf across the opening but folds it completely to the side. A glazed wall six metres long can disappear almost entirely, leaving the opening clear.

Both systems go up to 14 leaves and allow a 90º corner with no mullion, but they differ clearly in insulation: Bi-Fold Plus brings the transmittance down to 0.78 W/m²K, against 0.97 for Bi-Fold, and raises the wind tightness from Class A3 to Class C3.

Bi-Fold Plus also has a repeated opening and closing test, with values declared separately for the main leaf and for the even leaves.

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At a glance

The values that decide the choice

Uwfrom 0.78 W/m²K

Leaves1 to 14

Maximum leaf1.200 × 3.000 mm

Variants2 systems

Comparison

The versions in the family, side by side

Characteristic	BI-FOLD DOOR · Bi-fold door	BI-FOLD PLUS DOOR · Bi-fold door, reinforced version
Thermal transmittance	Uw ≥ 0.97 W/m²K	Uw ≥ 0.78 W/m²K
Glazing	maximum 45 mm / minimum 25 mm	maximum 48 mm / minimum 25 mm
Frame sightline	73 mm	80 mm
Sash sightline	73 mm	80 mm
Polyamide bar	frame 20 mm / sash 30 mm	frame 45 mm / sash 45 mm
Maximum dimensions / leaf	W 1,200 mm × H 3,000 mm	W 1,200 mm × H 3,000 mm
Maximum weight / leaf	120 kg	120 kg

A dash means that the data sheet for that version does not declare that value. We have not filled it in with the value of another version.

Variants

Each version, with its own data sheet

BI-FOLD DOOR

Bi-fold door

The base system, with a 73 mm frame and sash. The data sheet declares a security test passed on a 3-leaf configuration.

Characteristics

Thermal transmittance: Uw ≥ 0.97 W/m²K
Glazing: maximum 45 mm / minimum 25 mm
Frame sightline: 73 mm
Sash sightline: 73 mm
Profile thickness: door 1.8 mm
Polyamide bar: frame 20 mm / sash 30 mm
Maximum dimensions / leaf: W 1,200 mm × H 3,000 mm
Maximum weight / leaf: 120 kg
Extrusion alloy: 6063 T-5

Classes achieved in testing

Air permeability (UNE-EN 12207): Class 4
Watertightness (UNE-EN 12208): Class 9A
Wind resistance (UNE-EN 12210): Class A3
Reference test specimen: 2.70 × 2.53 m / 3 leaves
Security test: passed (3 leaves, configuration 330, 2,701 × 2,517 mm)
Testing verified by: ALUMINIOS CORTIZO S.A.U.

Opening configurations

Inward: from 1 to 14 leaves.
Outward: from 1 to 14 leaves, with a 90º corner and no mullion possible.

Finishes

Two-tone possible
Powder coating (RAL, mottled and textured), to Qualicoat >60 microns
Wood-effect coating, to the Qualideco standard
Anodising, to Ewwa Euras / standard class 15, optionally classes 20 and 25

The data sheet for this system declares no sound insulation value.

Download the data sheetOfficial CORTIZO data sheet – PDF · 212 KBBI-FOLD DOOR

BI-FOLD PLUS DOOR

Bi-fold door, reinforced version

An 80 mm frame and sash, with a 45 mm polyamide bar on both. The only one of the two systems with a repeated opening and closing test.

Characteristics

Thermal transmittance: Uw ≥ 0.78 W/m²K
Glazing: maximum 48 mm / minimum 25 mm
Frame sightline: 80 mm
Sash sightline: 80 mm
Profile thickness: door 1.8 mm
Polyamide bar: frame 45 mm / sash 45 mm
Maximum dimensions / leaf: W 1,200 mm × H 3,000 mm
Maximum weight / leaf: 120 kg
Extrusion alloy: 6063 T-5

Classes achieved in testing

Air permeability (UNE-EN 12207): Class 4
Watertightness (UNE-EN 12208): Class E750
Wind resistance (UNE-EN 12210): Class C3
Reference test specimen: 3.73 × 2.50 m / 3 leaves
Repeated opening and closing (UNE-EN 1191): 50,000 cycles (main leaf); 25,000 cycles (even leaves), specimen 3 leaves, configuration 321, 3.73 × 2.50 m
Security test: passed (3 leaves, configuration 321, 2.70 × 2.50 m)
Testing verified by: ALUMINIOS CORTIZO S.A.U.

Opening configurations

Inward: 1–14 leaves.
Outward: 1–14 leaves, with a 90º corner and no mullion possible.

Finishes

Two-tone possible
Powder coating (RAL, mottled and textured), to Qualicoat >60 microns
Wood-effect coating, to the Qualideco standard
Anodising, to Ewwa Euras / standard class 15, optionally classes 20 and 25

The data sheet for this system declares no sound insulation value.

Download the data sheetOfficial CORTIZO data sheet – PDF · 233 KBBI-FOLD PLUS DOOR

The thermal transmittance values published by CORTIZO are minimum values for the system, conditional on the typology, on the dimensions of the joinery and on the glazing unit. The actual value of an assembly is established by calculation, on the configuration actually ordered.

From system to finished joinery

What we do with this system

Choosing the configuration

The system offers a range; the project asks for a value. We settle the version, the glazing unit and the typology from the actual requirements of the building, not from the maximum on the data sheet.

Calculation on the actual assembly

The transmittance of a window depends on the frame-to-glass ratio. We calculate it on the actual dimensions of the openings, not on the laboratory specimen.

Our own production

Cutting, machining, assembly and glazing in our own workshop in Baia Mare, on original CORTIZO profile and with hardware approved for the system.

Installation and handover

We install with our own teams, including abroad, and hand the job over with its documents. The warranty is the one published on our warranties page.

Next step

Do you want bi-fold doors on your project?

Send us the window schedule or the drawings. We will come back with the right version from the family, with the thermal calculation on the actual openings, and with the price.

Request a quote

Continuous