JUST the perfect bifolding door for your project.
slimline aluminium cortizo bi-folding doors

Supply Only Aluminium Bifolding Doors

Created using the UK’s leading  bifolding door profiles –  Cortizo & Smart Visifold Bifolds from JUST £495 per leaf inc delivery

Why Start With the Cortizo Bifold Door Profile?

JUST aluminium’s profile of choice is based on either Cortizo the Smart Visifold 1000 Doors slimline frame – two of the leading profiles in the UK. Both bifolding door systems are extremely durable and exceptionally strong, enabling us to create one of the slimmest door frames on the market today (55mm frame width) with a sightline of just 120mm (at the point two frames interlock with a gasket on 10mm). Despite the slim profile, the Cortizo doors are incredibly strong – in fact, we can create bifold door configurations up to 3000mm in height and each panel up to 1200mm wide – the system can even create configurations of up to 14 door panels! The Cortizo system combined with JUST  Aluminium high-quality specification, manufacturing processes and service standards ensure our clients receive the perfect solution to their product requirements.

All available from only £495 per panel including UK delivery. 

What Are The Benefits Of JUST Cortizo Bifolding Doors?

In essence, bifold doors are a group of glass panels, engineered together as a series of matching doors that fold back on each other along an exterior aluminium frame. Aluminium bifold doors allow homeowners to introduce a sophisticated, seamless transition between the inside and outside spaces creating the perfect environment for open plan living and family entertaining. Finally, and probably the main feature of bifold doors are that they allow you to maximise natural light throughout the year – the perfect option for any UK property.

bi-fold profile

Cortizo Aluminium Bifolding Door Spec*

  • Frame width of just 55mm
  • U values of 1.4 (triple glazed) and 1.6 (double glazed)
  • Up to 14 sashes available
  • Panel widths up to 1200mm per sash (700mm minimum) and maximum height of 3000mm
  • Weather rated standard threshold, with low threshold available
  • Security hardware and locking system conforming to PAS 24 standards (upgrade available)
  • Engineering grade hardware for ultra smooth opening and closing
  • Installer friendly and adjustable for easy, accurate fitting
  • Robust running gear operates smoothly and ensures minimal maintenance
  • High performance weather seals
  • 120mm super slim sightline
alutech profile
your bifolds


With one of the slimmest frames available in the UK, you can benefit from more natural light, a more modern look and improved views of your garden from within your home.

aluminium doors that keep you warm


Bifolding doors from JUST Aluminium can achieve a U Value as low as 1.4 which means you stay cosy and warm on the coldest winter days and can look forward to lower energy bills for years to come!

bi-folding doors


JUST aluminium bifolding doors are manufactured to achieve PAS 24, offering you the ultimate peace-of-mind for your home, family and business

Specify your bifolds online for an instant supply only quote – It’s JUST so easy!

Simply input your sizes, colour and look and generate a supply only price in seconds

JUST choose your colour.

JUST aluminium keep things simple – we offer 3 standard colours: Anthracite Grey, Black and White – plus a standard dual colour option of anthracite exterior with white interior. Whilst there are hundreds of RAL colours, 99% of our clients opt for one of these three options. We also hold these colours in stock, allowing us to achieve faster turnaround timescales.  READ MORE:


THE classic aluminium bifold door colour for that ‘Grand Designs’ look


Perfect for a more sophisticated, contrasting colour option or a more contemporary finish


Offering a more traditional look and often chosen to match existing window frames, traffic white provides an ideal alternative

*If you require a non-standard RAL colour, please get in touch on sales@justaluminium.com

Energy Efficient Glazing – JUST the right choice

JUST aluminium installs Low E glass in our bi-fold products as standard. LowE glass is one of the most energy efficient glazing products in the UK, specifically designed to help homes reduce their energy consumption and save money on energy bills. Energy efficient glass also performs exceptionally well using the Cortizo bifold door profile and our choice of hardware, making it the perfect choice of glass for any home or commercial property. 

Key features of Low Emissivity glass

It improves the energy efficiency of your home thanks to its all-round balance of thermal insulation and by maximising free solar gain

Reduces the amount of energy required to keep your home comfortable.

Environmentally friendly solution, given the lower CO2 emissions associated with reduced energy consumption

Heat loss is significantly reduced as the coating prevents heat from escaping through the glass Helps to eliminate cold areas around your windows, making your home warmer and reducing your energy bills

Reduces condensation on the inner pane

Neutral appearance in both transmission and reflection

aluminium bifolds


A special coating on our glass helps stop heat escaping, so you’ll use less energy to keep your home warm.


Our standard double glazed units can achieve a U Value as low as 1.2 keeping you cosy and warm on the coldest winter days and lowering energy bills for years to come!


Our doors provide one of the slimmest frames available in the UK, you can benefit from more natural light, a more modern look and improved views of your garden from within your home.

Handles – JUST choose the perfect finishing touch

 Whatever colour door frame you choose, we have the perfect handle to match. We would recommend a matching handle to frame so the hardware is less noticeable and uniform, however chrome and satin options can add an element of sophistication.  

black bifold handles

Anthracite aluminium
lever handle

black bifold handles

Black aluminium
lever handle

white handles

White aluminium
lever handle

chrome bifold handles

Chrome aluminium
lever handle

chrome bifold handles

Satin aluminium
lever handle

This JUST in...

The latest news from JUST aluminium

bifolds for you

Understanding PAS 24

Enhancing Security Standards in the Building Industry In the ever-evolving landscape of the construction and building industry, ensuring the safety and security of occupants has

Read More >