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Flush Aluminium Windows

Sleek flush finish with minimal sightlines for a stylish contemporary look. Our flush aluminium windows are suitable for both new build and refurbishment projects. Manufactured using high-performing AluK Optio 58BW profiles, they are the perfect choice for residential and commercial applications.Get a Quote

Features & Benefits

Sleek and stylish flush aluminium windows

Flush aluminium windows from Midori Aluminium are designed to tastefully replicate the appearance of traditional steel Crittall windows. Combining high performance with an attractive aesthetic, they achieve excellent levels of thermal performance and outstanding security credentials.

Double rebate design for enhanced weather protection

45mm ultra slim sightlines for improved natural light intake

Choice of flat, putty line, or stepped edge vent styles

Secured by Design and PAS 24 security accredited

Multi-point locking systems as standard

Green Guide A rated for thermal performance

U-values as low as 1.4 W/m²K (double glazing) & 1.2 W/m²K (triple glazing)

Single or dual colour options to match your design

Product Options

Our flush aluminium windows 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 flush aluminium windows are available in a selection of attractive colours. From textured and metallic finishes to durable anodized options, our windows can be matched with almost any property’s architectural aesthetic. Whether you want a sleek contemporary shade or a classic heritage colour, we have an extensive array of options for you to browse.

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    High-performing glazing options to maximise performance

    All Midori Aluminium flush windows are fitted with high-performing double glazing. With glazing thicknesses of either 24mm or 32mm, our flush aluminium windows can be designed to suit your needs. Because of the inherent strength of our aluminium frames, large expanses of glass can be easily supported. This allows for super slim sightlines to optimise natural light.

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    58w flush window


    A selection of attractive and smooth-functioning hardware and accessories

    At Midori Aluminium, we use a range of professional industry experts to supply our window hardware. Working with Aluspec, Alpro, VBH, and Titon, we can offer all our customers an extensive range of hardware options. From sleek and modern handles and hinges to traditionally designed window accessories, our hardware is durable and attractive, perfect for any window installation.

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    modus sliver close 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 flush aluminium windows 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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    Selection of window configurations

    Flush aluminium windows designed to meet your exact specifications

    Our flush aluminium windows are available in a variety of window configurations. Choose from fixed light, multi-light, side hung, and tilt before turn to suit your design requirements. You can also choose from two different frame depths, 58mm and 70mm to suit the thickness of your walls. Aluminium flush windows are a versatile window system for all installation types.

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    58BW Flush HI Window
    grey aluminium windows on large orange brick house
    58w flush window
    panoramic windows on a bespoke house

    Technical information

    High-performing flush aluminium windows for residential and commercial applications

    • 46mm or 70mm sightlines for a slimline aesthetic 
    • 58mm and 70mm frame depths to suit a variety of buildings 
    • Friction stays on side-hung windows for enhanced weather protection 
    • Open out functionality 
    • Internal and external glazing options 
    • Unique polyamide thermal breaks for superior thermal performance 
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    Our most regular flush aluminium window FAQs

    Want to find out more about our flush aluminium windows? 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 enquires.

    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.


    At Midori Aluminium, our excellence in manufacturing and installation is highlighted by accreditations from trustworthy bodies such as Certass and Made in Britain.