The Cortizo Bi-fold Plus: Unmatched Performance, Energy Efficiency and Security

Discover unrivalled performance, energy efficiency, and security with the Cortizo Bi-fold Plus. Dive into a variety of customisable designs and finishes to craft a striking and functional entrance for your building. Elevate both style and safety with Cortizo’s Bi-fold Plus solution.

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Manufactured locally, we cover the Dorset area and are ready to transform your spaces with our bi-fold door system, featuring an 80 mm deep frame. This evolution of the Bi-fold series delivers outstanding thermal and acoustic performance, thanks to its 45 mm thermal break and the ability to accommodate glazing up to 48 mm.

With a slim central section of just 110 mm, this system maximizes the glazed surface, flooding your interior spaces with abundant natural light.

Key Features:

Superior Thermal Insulation: Achieve a Uw value of ≥ 0.8 (W/m²K) with a 45mm thermal bridge break and a glazing capacity of up to 48mm.
Precision Engineering: Pre-inserted gaskets for frame, sash, and bead ensure optimal sealing.
Slim Design: The slim central section (Sash-to-sash meeting section: 110 mm) maximizes the glazed surface, allowing for an uninterrupted view.
Enhanced Security: Tested to meet PAS 24 standards for high security.
Adjustable Jamb Option: Tailor the door system to your specific requirements.
Efficient Installation: Benefit from quicker installation with pre-assembled gaskets.
High Performance: Experience top-tier thermal and acoustic insulation, ensuring comfort in every season.
Smooth Operation: The double-bearing system within a gimbal stabilizer facilitates easy sliding, and evenly distributing weight for smooth opening and closing operations.

Revolutionize your living spaces with this cutting-edge bi-fold door system, seamlessly merging indoor and outdoor environments while prioritizing aesthetics, functionality, and energy efficiency.

Contemporary Enclosures

Maximum glazing

48 mm

Polyamide

45 mm

Minimalist central section

110 mm

Possibility of embedded low threshold

CORTIZO’s systems main benefits:

RESISTANCE TO ATMOSPHERIC AGENTS [CORTIZO COMFORT]
All of CORTIZO’s enclosing systems are tested in the Test Laboratory at the
Technological Center to guarantee the best performance in watertightness,
air permeability and wind loads, endorsed by the maximum results in its test
qualifications.

ACOUSTIC INSULATION [CORTIZO SILENCE]
In order to transform the residence into a private space, intimate and free of
pollution outdoor acoustics, CORTIZO has designed its enclosing systems with
all the latest technological developments necessary to ensure indoors peace
and relax.

AVANT-GARDE AESTHETICS [CORTIZO DESIGN]
We create tailor-made windows and façades for every project. Creativity to
answer aesthetically and functionally to each demand. Aesthetic answers to
the technical needs. Creativity at the service of habitable environments.

SUSTAINABLE SPIRIT [CORTIZO SUSTAINABILITY]
Respect for the environment is CORTIZO’S commitment. Using innocuous raw
materials and products in all our manufacturing process and the limitless
possibility of aluminum recycling, allows us to remove any creation of waste
and environmental risks.

THERMAL INSULATION [CORTIZO ENERGY EFFICIENCY]
Nowadays energy efficiency in buildings is a demand made, both by the
architects, as by the final customer aware of the importance of saving on
heating costs and air conditioner. CORTIZO meets such challenge with
systems for every climatic area with a high insulation coefficient to ensure the
comfort in the residence.

UNLIMITED COLOUR RANGE [CORTIZO COLOURS]
The whole RAL colour chart in powder coating, exclusive powder coating,
metallic, textured , wood effect, more than 100 finishes in anodized.
Aluminum on the outside and wood in the inside, two-coloured finishes… An
unlimited offer to create a colour harmony at home. Quality labels in every
process: QUALICOAT, SEA-SIDE, QUALIDECO and QUALANOD.

ENCLOSURES FOR LIFE [CORTIZO DURABILITY]
Aluminum is the most durable, long-standing and resistant material of those
used in enclosures. Aluminum has the strength and a durability of the things
that last a whole lifetime.

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If you encounter any issues with our products or services, please get in touch with us directly so we can address them promptly. Your satisfaction is our priority.

OUR HAPPY CUSTOMERS

      EXCELLENT  
   Based on 47 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Philip Rae 
 12/10/2026
 
 
  Fantastic service and outstanding aftercare, 3 years on now and I had an issue with my weather strip, I emailed to ask for a price and they popped over on the way to another job, sorted the seal and didn’t charge as it was an easy fix. Can’t ask for better aftercare than that. Highly recommend this company.
  
 
      Posted on Google  
   
   Ted Watts 
 07/09/2026
 
 
  Overall a great experience, a five star service. Our contractor had two window companies in mind, and we visited both. We chose A L Windows because we saw the place where the windows were made, and fortunately met the people who had quoted and who would fit. The boss, Mandy, worked with our Architect to improve the details and the design, and the result is stunning; his input was highly professional. After the doors and windows were completed, a piece of debris on the site damaged a weather strip on the underside of the doors; they returned immediately and repaired it with no additional charge, even though it was not their fault.

Now we are adding the finishing touches and will post a photo of the job when it is finished.
  
 
      Posted on Google  
   
   Sandra Ellway 
 09/07/2026
 
 
  We are so pleased that we chose AL Windows to fit sliding doors on our new balcony. They were so professional, friendly and punctual, completing the job on an incredibly hot day. The quality of the windows is excellent with great attention to detail and look fantastic. We would definitely recommend AL windows.
  
 
      Posted on Google  
   
   Tony 
 27/01/2026
 
 
  AL Windows were a pleasure to do business with. They are a small, family run business which means you get a personal and professional experience from start to finish. The brothers are courteous and friendly and the cost was extremely competitive in the current market. They were prompt, flexible and willing to work to my building timeframe and schedule. I would definitely recommend AL Windows and am pleased I chose them for my bi-fold installation.
  
 
      Posted on Google  
   
   Sheila Gordon 
 17/11/2025
 
 
  AL Windows are a breath of fresh air in the windows market. Excellent before sales service with advice on the many different options available - brilliant installation, really looked after my property - and amazing after sales service (one minor issue was resolved with a call out visit in no time!) - the quality of the product is exceptional too, with lovely slim profiles so you have more glass to see through! - I will be calling them again if I get another property!
  
 
      Posted on Google  
   
   Paul Chappell 
 10/10/2025
 
 
  We had all our windows including a sliding patio door of our flat replaced.  The service by AL Windows was excellent from beginning to end.  The pricing, planning and installation went very smoothly and their expert team were very much on the ball.  They were very tidy and clean workers that left our flat in tip top condition.  Well done to them and a sincere thank you for a job well done.
  
 
      Posted on Google  
   
   Freda Grehan 
 04/10/2025
 
 
  We are so pleased we chose AL Windows for our bi-fold doors. Service was excellent from start to finish. We found all the staff to be very helpful. They were always very happy to answer our questions. Our doors were ordered, made and delivered in 3 weeks at a very reasonable price.
Mandi and his assistant (who's name escapes me, sorry) fitted the doors in a very tidy and precise manner, very professional. Would not hesitate to recommend their very professional services. Thank you AL Windows.
  
 
      Posted on Google  
   
   Stephen KNIJFF 
 18/09/2025
 
 
  AL windows replaced all my windows and balcony doors. This was done in a very professional and effective way with the minimum of disruption.
Job was finished in 3 days and I’m very happy with the outcome, so much so that I recommended them to my neighbour who will also be using them.
  
 
      Posted on Google  
   
   Richard Grafham 
 02/07/2025
 
 
  We had our windows and doors fitted over four years ago, and the experience has been fantastic from start to finish. Recently, we accidentally broke a handle, and they came around and fixed it quickly and without any hassle. The customer service is outstanding; everyone is very friendly and easy to deal with. I highly recommend them!

The Cortizo Bi-fold Plus: Unmatched Performance, Energy Efficiency and Security

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OUR HAPPY CUSTOMERS

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