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Door Manufacturers

Klosen / Doors / Door Manufacturers

Luxury Door Manufacturers – Klosen

With over 25 years of experience in the aluminium door manufacturing industry, Klosen specialise in providing exceptional slimline doors from top brands. Perfect for both traditional and contemporary style builds, download one of our brochures or contact us today to make your dream property plans a reality. Easy to use, thermally-insulated and secure, all of our branded door designs are highly functional and elegant additions for any property.

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


Cortizo doors have offered a breath of fresh air to properties since 1972. From their Bi-Fold design with up to 14 sashes, to their Millenium range, the Cortizo range from Spain maximises the glazing surface area to increase the natural light and views.

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Cortizo Logo
patio area and room looking into kitchen dining area


Senior Architectural Systems (SAS) are British based door manufacturers, providing aluminium door systems that are perfect for both commercial and residential buildings. SAS offers high-performance door systems that exceed both performance and aesthetic expectations. They offer a wide range of slimline door designs, including single to double, inline slide, folding and lift doors. As well as offering versatility, SAS also works with premium materials that are beneficial for the environment.

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Senior Architectural Systems Logo
Aluminium Sliding Doors New Build


Since it was established in 2000, Indupanel has made innovation its core focus. Its bold and stylish front doors certainly make a statement, and they’re meticulously designed and engineered for optimal thermal performance and security.

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Indupanel Doorblock copy

10 Year Guarantee

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

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

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