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Aluminium Sliding Windows

Klosen / Aluminium Windows / Aluminium Sliding Windows

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    Aluminium Sliding Windows 

    Sliding windows are a great way to increase natural light all year round and are design to fit perfectly in your home.

    trees and lawn through patio doors

    With more than 25 years’ experience supplying contemporary doors and windows, at Klosen we embrace innovation in architecture and property design. We install sliding aluminium windows from leading brands in the industry and offer expert advice to help bring your vision to life. It is our priority to provide the highest quality products that not only create elegant living spaces, but also more sustainable and secure fittings.

    Benefits of Sliding Aluminium Windows

    Sliding aluminium windows are expertly engineered with a sliding mechanism so you can open your larger slimline windows like you would a sliding French door. Whether you’re opting for floor-to-ceiling horizontal windows or want a smaller window, sliding aluminium windows are a great way to bring the outside in.

    There are a wealth of benefits to choosing sliding aluminium windows for your property:

    With a much larger glass surface area and slimline frames, one of the key benefits of aluminium windows is the increase of natural light all year round.

    You can also enjoy panoramic views if you’re lucky enough to live in a picturesque landscape.

    With increased thermal insulation that keeps the heat in and cold, damp air out, these windows are a sustainable option.

    The sliding aluminium window design fits perfectly into a clean, contemporary aesthetic – there are no clunky opening mechanisms to disrupt your view or space.

    Horizontal Sliding Windows come with easy-opening mechanisms that are fitted with a secure multipoint locking system.

    10 Year Guarantee

    We offer a 10 year guarantee on all aluminium profiles and 25 years for the powder coating.

    Thermal Efficiency

    Stay warm in the winter and cool in the summer whilst cutting down on energy bills

    Complete Flexibility

    Our team are flexible throughout the entire process, including the design and installation of windows

    25+ Years Experience

    Klosen have over 25 years experience working with designers, architects and homeowners

    open sliding doors to patio with palm tree and outdoor furniture

    Aluminium Sliding Windows Material


    As a material, aluminium offers strength and durability. It is highly resistant to rust and corrosion. Our Aluminium Sliding Windows are also painted in a polyester powder coat, which provides a resilient finish that will not flake or fade over time. Essentially, aluminium windows are built to last with little maintenance required.

    With our sliding windows you’ll also have access to the full RAL colour list, meaning you have optimum choice on the finished product. Samples are available on request.

    Download Brouchure

    Our Customer Reviews


    Great Price & Quick Delivery

    This company have been amazing and came to our rescue when another company let us down repeatedly over a period of 4 months during our building work. We got a great price, a quick delivery time and the same product but this time with lovely fitters who knew exactly what they were doing. Now we will will have a warm house for christmas HOORAY !! We went for 3 large sliding doors and the quality of the product is excellent . Many thanks to Audrey Cieran and the team I would recommend highly
    - Esther Young


    Delighted with the product and the service provided by Klosen. The installation team were excellent and very helpful.
    - Sara Hyem

    Very Happy

    We’ve been very happy with the work Klosen recently completed for us. They installed a variety of windows and sliding doors for us on our new build project. All of the information we requested early on was provided promptly and they were great with our architect. Very happy with the end result and the colour they helped us chose.
    - Sarah Munton

    Where Klosen Works

    It’s easy to get started on your dream building or renovation project with us. Simply download our brochure for information on the products and brands we supply. If you find a style that you like the look of, you can contact us via our online contact form or give our knowledgeable staff a call.

    Our long-lasting relationships with our customers is a true testament to our reputable work. We supply aluminium sliding windows across Peterborough, Cambridgeshire, Lincolnshire and the surrounding areas.

    Brands We Work With

    We offer a choice of leading sliding window brands, including Senior Architectural Systems and Cortizo, so that you can pick the best window for your property. At Klosen, we not only install fittings, we can also get involved with the planning and design process. Working alongside talented architects and designers we can create bespoke fittings for ambitious projects and help to improve properties.

    Senior Architectural Systems Logo
    Cortizo logo

    Frequently Asked Questions

    Do you have a showroom I can visit?

    Yes, you can visit our showroom in Market Deeping, Peterborough. Contact us today to arrange your visit.

    Can you do site visits?

    Yes, we do site visits to help give an accurate quote, get the right measurements and advise on the right aluminium window for your building project. Before we carry out a survey we would ideally need your openings to have steel/RSJ in place and your finished floor level should be clearly marked.

    How long does it take to install aluminium sliding windows?

    Currently our lead times for our aluminium sliding windows are 5-6 weeks for most products supplied and installed. Some of our range may take longer.

    Get in touch with us today to receive your free quotation!