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Premium Bi-Fold Sliding Doors

High-performing smooth sliding aluminium bi-fold doors. At Midori Aluminium, we manufacture, supply, and install a range of premium bi-fold doors using high-quality AluK systems. The AluK BSF70 HI bi-fold door is fully customisable and perfect for many applications.Get a Quote

Features & Benefits

Premium bi-folds with super slim sightlines for panoramic exterior views

At Midori Aluminium, our premium bifold doors are available with up to 14 sliding folding panels. Multiple configurations are available with the option to select one door leaf as a traffic door. Due to their slimline frames, natural light intake is optimized to create a bright and airy interior. When fully open, they seamlessly connect interior and exterior and when closed offer panoramic exterior views.

Glazing options of 28mm to 44mm

Chamfered and square bead profiles

Multi-point locking systems

Dual-colour powder coated finishes

Part M compliant low threshold option

Stainless steel sliding roller opening

Innovative flush line pop-out handle

Internally beaded glazing

Product Options

Our premium bi-fold doors are fully customisable to find the perfect style for your property

  • Colours
  • Glazing
  • Hardware
  • Downloads
  • Colours





    Dark Blue

    Dark Blue







    Anthracite Grey

    Anthracite Grey



    Bespoke RAL colour

    Bespoke RAL colour

    A selection of attractive colours to complement any installation

    Our premium bifold doors feature a durable powder coated finish. They can be supplied in a selection of standard colours including White, Anthracite Grey, and Black and can also be specified with a dual-colour frame or with a textured or anodized finish. For the ultimate in bespoke customisation, you can request any of over 200 RAL powder paint colours for your premium bi-folds.

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    High performing glazing options to maximise performance

    At Midori Aluminium, our premium bi-fold doors are fitted with high-performing double glazing or triple glazing. Thanks to the inherent strength of their aluminium frames, they can support extremely large areas of glass. Each panel has a maximum sash size of 3000mm x 1200mm. Their slimline frames maximise exterior views and boost natural light admittance.

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    conservatory with a skylight and bi-fold doors internal


    A selection of attractive and smooth-functioning hardware and accessories

    At Midori Aluminium, we use a range of professional industry experts to supply our door hardware. Working with Aluspec, Alpro, VBH, and Titon, we can offer all our customers an extensive range of hardware options. Our premium bifold doors also feature multi-point locking systems to boost security standards.

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    black aluminum hardware door with black metal handle


    Download our product brochures for more detailed technical information

    All our downloadable brochures and guides are completely free to access by clicking on the links below. Find out all you need to know about our range of premium bi-fold doors from colour options to configurations and glazing to thermal performance. Our downloads will also provide inspirational images to showcase your products to any potential customers.

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    Innovative opening

    Premium bi-folds with fully customisable opening options

    Premium bi-folds from Midori Aluminium feature a floating mullion frame. This enables them to be fully opened on both sides to create uninterrupted views of your home exterior. Depending on the layout and space restrictions of the property, our premium bi-folds can be specified to open either inwards or outwards. With numerous door configurations, they are a truly bespoke door choice.

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    Dark navy uPVC bifolding doors opened to patio
    Dark navy uPVC bifolding doors opened to patio far off
    premium aluminium bi-fold doors closed exterior
    bi-folding light grey on a conservatory

    Technical information

    High-performing premium aluminium bi-folds

    • U-values as low as 1.4 W/m²K (double glazing) & 1.1 W/m²K (triple glazing) 
    • Maximum glass thickness of 40mm 
    • Maximum vent weight of 130kg 
    • PAS 24 and Secured by Design tested and accredited 
    • Heavy-duty roller opening upgrade 
    • Class 9a water tightness 
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    Our most regular premium bi-fold door FAQs

    Want to find out more about our premium bi-fold doors? Have a read of the answers to some of the most frequently asked questions that we receive. If you can’t find the answer to what you’re looking for, send us a message using our online contact form and we’ll get back to you as quickly as possible.

    What are your average lead times?

    We offer all our regular customers superfast lead times of just a few days. For new customers, we offer excellent industry lead times of two to three weeks. Please note that standard product orders will be quicker than bespoke product designs.

    What colour options are available?

    All our aluminium glazing products are powder coated in a selection of standard RAL colours. Bespoke RAL colours are available on request with dual colour options, anodized and marine quality finishes also possible.

    Do you have a showroom where we can view your products?

    Yes. Our showroom is located in a separate unit alongside our main factory and headquarters. It is open five days a week and there’s always a member of our team on hand to help with your enquiries.

    Where do you deliver to?

    We deliver to locations across the UK. This includes throughout England, Scotland, and Wales for glazing installations, trade deliveries, and commercial glazing supply and installation.

    Do you offer any finance packages?

    No. We offer all our customers extremely competitive prices on all products. This includes design, manufacturing, supply, and installation. We also provide comprehensive 10-year warranties on all our products.

    Our process

    Streamlined processes to maximise efficiency and deliver quality

    At Midori Aluminium, we work tirelessly to provide our customers with the best possible service. From the initial enquiry through design and manufacturing to product delivery and installation, we work closely with every customer to ensure only the highest standards.

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    Get in touch

    Contact us with your project details and requirements. We will provide you with a free, no-obligation quote and answer any questions you may have.

    Select your products

    Choose from our range of high-quality aluminium windows and doors, available in various styles, colours, and configurations. We will design and manufacture your products to your exact specifications and preferences.

    Product delivery

    Receive your products within the agreed time frame. We will deliver them to your site or premises, ensuring they are well-packaged and protected during transit.

    Ready to install

    Enjoy a hassle-free installation service. Our high-quality products are easy for installers to work with, and homeowners can enjoy professional installation from our experienced and qualified team.