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Aluminium Tilt and Turn Windows


Klosen / Aluminium Windows / Aluminium Tilt and Turn Windows


With their dual-action mechanisms, you can tilt these windows outwards or swing them open on the side hinges.

Having more opening options gives you more control over how much light, views and ventilation you want in your home. Aluminium tilt and turn windows look smart and are practical, designed with a robust build quality and excellent thermal efficiency.

At Klosen, we bring over 25 years’ experience in supplying and installing the highest quality contemporary aluminium windows for homes and businesses. Working in and around Peterborough, we deliver exceptional customer service and a 10 year guarantee.

What Are The Benefits of Aluminium Tilt and Turn Windows?

  • Flush profiles and slim sightlines increase the views and natural light in your home.
  • Suitable for many types of windows, including fixed, shaped and bay windows.
  • Made-to-measure specifications along with a range of frame colour options ensures you can tailor the design to suit the look of your property. The powder-coated colours won’t rust or corrode over time either.
  • Suitable for use as a fire escape window and ideal for placing over sinks and worktops.

Get your free quote today or download a brochure.

Get A Free Quote Brands We Work With

Brands We Work With

As one of the UK’s leading aluminium door and window specialists, it’s safe to say that we know the industry inside out. We’ve used that experience to carefully hand-pick brands and products that we know you’ll love.

The products we supply come from renowned suppliers Cortizo and Senior Architectural Systems, two of the most highly respected manufacturers on the planet.

Discover more about each brand below or download a brochure for further information.

Cortizo logo
Senior Architechtural Systems Logo

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


Since 1972, Cortizo has been leading the way in contemporary windows and doors. Working exclusively with aluminium, all of their products are built to last and designed to effortlessly combine function and form. By embracing minimalism, Cortizo offers enhanced views. You will also benefit from a robust, thermally efficient window. Before reaching the market, each system is tested to guarantee the best performance in terms of water tightness, air permeability and wind resistance.

Our team has worked on multiple projects including May Cottage in Peterborough. Here, we used Cor 70 Hidden Sash Tilt and Turn windows to create a flawless facade for this cottage. The glazing installed reduces noise and enhances thermal installation levels, not to mention how the windows blend perfectly with the stonework.

We also used Cortizo windows to improve the look of a property in Queens Street, Peterborough. By installing a Crittal style window, we achieved a slim industrial look and reduced noise levels. This solution improved both the looks and functionality of a commercial building.

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Cortizo Specifications

Safe, secure and thermally efficient, these windows are available with your choice of double or triple glazing. Take a look at the full specifications below.

Opening Possibilities: Outward Top Hung and Side Hung

Security test:  British Security Certification PAS 24

Transmittance: Uw ≥ 1.0 (W/m2K)

Acoustic insulation: Rw up to 45 dB

Water tightness: Class E1200

Air permeability: Class 4

Wind resistance: Class CE 2400

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

Senior Architectural Systems

British manufacturer Senior Architectural Systems (SAS) has been around since 1991, and has become one of the nation’s largest suppliers of contemporary aluminium windows. Their expanded polyurethane barrier provides exemplary thermal insulation and water resistance.

Offering exceptional thermal insulation, these windows are also the height of sophistication. Slim aluminium frames allow for maximum uninterrupted views. With a full choice of colours, finishes and hardware, you can get the bespoke design you want.

The windows are also compatible with the door and curtain wall systems, making installation cost-effective and simple, with elegant results.

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modern mixed architectural style house

Senior Architectural Systems Specifications

Typical sizes:
Width (mm)

Height (mm)
x 1500

Thickness: 28mm – 50mm

Air Permeability: 600 Pa
Water Tightness: 600 Pa
Wind Resistance: 2400 Pa

Residential CEN Standard:
U-values as low as 0.73 W/m2K

Tested to PAS24, BS6375-2 and BS6375-3

Endless Colour Options

Our brands offer an almost endless choice of colours and finishes with state-of-the-art powder coating. This coating won’t corrode over time so will maintain its like-new appearance for years to come. You can even choose a dual finish, with different colours on the interior and exterior frame.

With SAS, there are two stock standard RAL colours, but they can also colour match for a truly bespoke finish. You’ll also have the extra option of a metallic, textured or anodised finish.

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We’re proud to have supplied and installed Cortizo casement windows for a Grand Designs project in South Lincolnshire back in January of 2021. This stunning home was modelled on a historic Dutch barn but looks thoroughly modern – thanks in part to those contemporary and cutting-edge windows.

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Areas We Cover

We work within a 60 mile radius of our base in Market Deeping. Popular areas we work in include South Lincolnshire, Cambridgeshire and London. From Bourne and Stamford to Huntingdon, we work on projects in the city and in rural villages.

From initial design and planning through to the final installation, we ensure our customers are completely happy with the development of the project.

Why Choose Klosen?

All our aluminium windows and doors are exceptional quality and come with excellent customer service.

  • Over 25 years of experience
  • Five-star reputation
  • 10 year guarantee on all work as standard
  • No project is too big or small
  • Experience working on high-profile projects, including a Grand Designs home and the ABBA Arena in London
Contact Us


Do you have a showroom I can visit?

Yes. We have a showroom in Market Deeping, Lincolnshire. You can give us a call to arrange a visit.

How easy is it to get a quote?

To get your free quote, you can fill out our contact form or get in touch with our customer service team to discuss your project. With bespoke designs, it’s worth taking the time to know your options to choose the optimum design for your property and budget.

Are your aluminium tilt and turn windows made-to-measure?

Yes. We choose suppliers that enable made-to-measure designs so you can make the windows fit your exact requirements. The tilt and turn windows are suitable for a range of window styles, including fixed, shaped and bay windows.

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