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MaterialAluminium
Product typeBi-folding Doors
SystemCortizo
Max Height3,000 mm
Thermal (Uw)≥ 0.8 W/m²K
Max Glazing48 mm
A modern, bright reception area with a white desk, marble floor, and large glass doors leading to an outdoor terrace with potted plants and seating.
Product mediaCortizo Aluminium Bi-folding Doors
Published strengths

What stands out on this system

  • More natural lightGlazing, sightline or large-opening details support brighter spaces.
  • Thermal comfortPublished content includes thermal, insulation or draught-control benefits.
  • SecuritySecurity hardware, locks or tested security standards are referenced.
Key documents
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Modern reception area with a glossy white floor, a white desk on the left, and large glass doors leading to an outdoor patio with plants and seating.
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Cortizo Bi-fold & Bi-fold Plus Systems

A high-performance thermally broken bi-folding system designed to unify indoor and outdoor spaces. Featuring slim sightlines, hidden hardware, and configurations of up to 14 sashes for expansive openings.

Get a QuoteExplore Features
Max Height3,000 mm
Thermal (Uw)≥ 0.8 W/m²K
Max Glazing48 mm
Max Weight120 kg/sash
Secured By Design
ISO 9001 Certified
FENSA Registered
Constructionline Gold

Cortizo Bi-fold & Bi-fold Plus Systems Features

Start with the published benefits that most affect performance, appearance and day-to-day use.

Minimalist Design & Maximum Opening

The Cortizo Bi-fold system is engineered to divide environments while seamlessly unifying spaces. Available in Standard (73mm) and Plus (80mm) depths, it offers exceptional thermal insulation and versatility.

  • Slim Sightlines: Minimal central knot dimensions (110mm on Plus, 120mm on Standard) maximize natural light.
  • Expansive Openings: Capable of spanning over 16 meters with up to 14 sashes.
  • Accessibility: Optional embedded flush threshold facilitates easy transit between interior and exterior.
Glass folding doors open to a modern patio with outdoor furniture, greenery, and a swimming pool visible in the background.

Thermal Efficiency

Achieve Uw values as low as 0.8 W/m²K (Bi-fold Plus) thanks to 45mm polyamide strips and high-performance glazing capacity.

Security Tested

PAS 24 certified security with multi-point locking mechanisms. Rated Class A3/C3 for wind resistance.

Hidden Hardware

Engineered with hidden rollers and hinges for a clean, modern aesthetic when the doors are closed.

Custom Finishes

Available in dual-colour, RAL powder coating, wood effect, and antibacterial finishes to match any architectural style.

Close-up view of the bottom track and hinge mechanism of a black-framed folding glass door installed between a tiled floor and a wooden floor.

Precision Engineering

The system utilizes high-quality rolling mechanisms that ensure smooth operation even with heavy sashes.

  • Hidden rollers for clean aesthetics.
  • Supports sashes up to 120kg.
  • Smooth gliding operation.
  • Durable stainless steel components.

Versatile Configurations

Adaptable to complex architectural requirements, offering freedom in design and functionality.
  • Inward and Outward opening options.
  • 90º corner opening without fixed mullion.
  • Odd or even sash configurations (1 to 14).
  • Optional flush threshold for accessibility.
Cross-section of a modern aluminium window frame with triple-glazed insulating glass, showing internal structure and layers.

Project Workflow

From initial concept to final installation.

Configuration

Select from 1 to 14 sashes, opening inward or outward, with standard or corner layouts.

Finish Selection

Choose from a wide range of RAL colors, anodized finishes, or bi-color options.

Glazing

Specify glazing thickness up to 45mm (Standard) or 48mm (Plus) for acoustic and thermal needs.

Delivery

Manufactured to exact specifications and delivered ready for installation.

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Product Specifications

Move between the practical benefits, verified performance data, product videos and downloadable technical literature.

Features & benefits

What this system is designed to do

Use these practical characteristics to judge whether the product suits the opening, architecture and way the space will be used.

Frame Depth73mm (Standard) / 80mm (Plus)
Profile Thickness1.8 mm
Polyamide Strip20-30mm (Standard) / 20-45mm (Plus)
Max Sash Dimensions1,200mm (W) x 3,000mm (H)
Opening PossibilitiesInward, Outward, 90º Corner

Gallery

Browse installations, product details, and finish inspiration from recent projects.

A modern, bright reception area with a white desk, marble floor, and large glass doors leading to an outdoor terrace with potted plants and seating.
Spacious modern room with open glass folding doors, a person standing outside near two chairs, and a view of a green lawn and trees.
Modern living room with a corner sofa, fireplace, and large folding glass doors opening to a patio with a view of a lake and trees at sunset.
Glass folding doors open to a modern patio with outdoor furniture, greenery, and a swimming pool visible in the background.
A modern living space with light wood floors and a yellow rug, featuring folding glass doors opening to a balcony with outdoor seating and a view of a tree.
Cross-sectional view of an aluminium window frame featuring double glazing, insulation layers, and multiple chambers for thermal efficiency.
A modern, bright reception area with a white desk, marble floor, and large glass doors leading to an outdoor terrace with potted plants and seating.
Spacious modern room with open glass folding doors, a person standing outside near two chairs, and a view of a green lawn and trees.
Modern living room with a corner sofa, fireplace, and large folding glass doors opening to a patio with a view of a lake and trees at sunset.
Glass folding doors open to a modern patio with outdoor furniture, greenery, and a swimming pool visible in the background.
A modern living space with light wood floors and a yellow rug, featuring folding glass doors opening to a balcony with outdoor seating and a view of a tree.
Cross-sectional view of an aluminium window frame featuring double glazing, insulation layers, and multiple chambers for thermal efficiency.
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Frequently Asked Questions

Clear answers to the practical questions that often shape the final specification.

What is the maximum size for the Cortizo Bi-fold?
Each sash can be manufactured up to 1,200mm wide and 3,000mm high, allowing for very large glass areas.
Does this system meet PAS 24 security standards?
Yes, the Cortizo Bi-fold system has passed the PAS 24 security test (Configuration 330), ensuring high resistance to forced entry.
Can the threshold be flush with the floor?
Yes, the system offers an embedded low threshold option to facilitate accessibility and create a seamless transition between indoors and outdoors.
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