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house with Bifold Patio Doors
Slimline Aluminium Windows
folding doors open onto patio area
patio area with outdoor furniture and aluminium doors and windows on the house

Klosen – Light | Space | Lifestyle

Aluminium Windows and Doors

As professional installers with over 25 years’ experience, Klosen supplies quality bespoke aluminium doors and windows for both commercial and residential properties. Our installations are completed to the highest standard to bring your ambitious property designs to life.

Upgrade your property – get your free quote from Klosen today.

Want elegant frames, more natural light, and exceptional levels of insulation? Aluminium doors and windows are a superb choice that are built to last.

We work closely with architects, builders, designers and homeowners to provide luxury aluminium windows and doors and transform both contemporary and traditional properties across Peterborough and Cambridgeshire.

Working with premium brands, including Cortizo and Senior Architectural Systems, our installations include aluminium bifolding doors, aluminium sliding doors, slimline aluminium doors and windows, curtain walling and roof lights. All our fittings can support your choice of double or triple glazing.

Browse one of our brochures or visit our showroom today.

Our Accreditations

Door Range

Partnering with top brands from across Europe, we select the finest designs. Offering character and choice, we have designs to suit your commercial and residential properties. Aluminium frames, slimline profiles with sliding and bi-fold opening mechanisms – all our doors help maximise natural light and views while providing excellent thermal performance. Ideal entrances or for creating an impressive vista onto your garden spaces.

Window Range

Maximise your vistas without losing heat in your home during the winter. Our slimline aluminium window range has an impressive collection to choose from. Select your opening mechanism, frame finishes and glass thickness.

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 windows featured on a South Lincolnshire Grand Designs project in January 2021. The couple-team wanted their home, which was modelled after a Dutch barn, to have a sleek, modern appearance. The Cortizo Casement Window helped them to do just that, while getting the best insulation for their new home.

Are aluminium windows something you’re thinking about installing in your house? Contact the Klosen team today to discuss your project and get your quote.

Areas We Cover

We typically cover areas across a 60 miles radius from our Lincolnshire-based premises in Market Deeping, including Bourne, Stamford and Huntingdon.

From Camden Mews in London to Weston Hills in Lincolnshire, we fit windows and doors in rural areas and city centres.

From initial design and planning, through to the finished installation, we ensure our customers are completely happy with the development of the project and provide a hassle-free service.

Our craftsmen will create a beautiful system with a tailored design for your property. We take the time to get your area measurements and requirements right so you can have the perfect installations.

Request a free quotation today and contact us to find out more about our luxury aluminium doors and windows in Peterborough and Cambridgeshire today.


Frequently Asked Questions

How much do aluminium windows and doors cost?

As all our aluminium windows and doors are designed to spec, the price will depend on the surface area covered and the specific designs you choose. We can give a free, no-obligation quote to make sure you’re happy before completing any work.

How do I know which type of aluminium windows and doors are right for my building?

We supply a wide range of aluminium windows and doors for both contemporary new builds and older, traditional properties. You can browse our brochures to find inspiration for your property, or you can speak to one of our professional aluminium window advisors. We can talk you through the design specifications to help you choose the right aesthetic and functionality for your home.

How long does the aluminium window or door installation take?

At the moment, lead times are around 5 – 6 weeks for both supply and installation of most of our aluminium windows and doors. Some products may take longer, however our team will keep you informed.

Do I need a survey?

We recommend getting a survey. Our experts will be able to advise on the best products to bring your property vision to life. By visiting your property, we can also triple-check the measurements to ensure we get it right.