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Aluminium Sliding Doors


Klosen / Doors / Aluminium Sliding


Our luxury aluminium sliding doors provide an alternative to traditional sliding doors, delivering a panoramic view and transforming the look and feel of your entire home.

What are aluminium sliding doors?

Created using the highest quality aluminium, our products are strong, lightweight and offer an unrestricted vista. The doors’ strength-to-weight ratio enables them to easily glide into an open position, creating the perfect slimline sliding doors to frame your view with minimum effort from the user.

Our sliding door systems are available in single, double or triple track configurations and are versatile enough to accommodate even the largest of openings.

At Klosen, we are capable of tackling the most complex of design requests, including bi-parting panoramic aluminium doors with fully glazed corners. The units and frames we use are of consistently high quality, with cutting-edge designs that will deliver an aesthetically stunning finish to your home.

Brands We Work With

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

Aluminium Sliding Doors Installers

Our experienced craftsmen and customer care team work in harmony to provide the highest possible level of service. At every step of the way, from initial design and planning through to the installation of the last piece of trim, we’ll ensure you’re nothing less than totally satisfied with your aluminium sliding doors.

We only supply the highest-quality aluminium sliding doors from companies such as Cortizo and Senior Architectural Systems, so you can expect material quality and operation to be faultless. Get in touch with us today for more information or request a quotation.

We have improved many houses by working on an array of projects. For example, the residents of Vane House in Northampton wanted to make the most of soaking in their beautiful garden views. So we installed Cortizo Vision sliding doors to help them take advantage of their views as well as allow maximum natural light into their property.

We also helped our clients in Meldreth, Cambridge to produce an open and spacious atmosphere. By installing aluminium sliding doors, the sleek frames were able to blend seamlessly into modern architecture, enhancing a property’s atmosphere and usefulness.

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Who We Work With

Cortizo logo
senior architectural systems logo


Designed to be as slim and elegant as possible for light, airy spaces and beautiful panoramic views, Cortizo’s range of sliding doors are attractive to look at while remaining thermally efficient.

Cor-Vision Sliding System

The avant-garde design of the Cor-Vision range creates a near-uninterrupted view of the outside world. The aluminium frame measures just 20mm in width at its narrowest point, representing between 9 and 14% of the overall surface area of the door. A selection of powder-coated finishes are offered.

Cor-Vision Plus Sliding System

Engineered with larger properties in mind, the Plus range is available in sizes up to 4,000mm. It maintains the minimalist, elegant design of the base Cor-Vision system, with the aluminium frame representing only 6% of the door’s surface area. It also boasts excellent acoustic and thermal performance.

Cortizo Brochure

Cortizo Specifications

U Value: Uw ≥ 1.3 (W/m²K)

Acoustic insulation: Rw up to 41 dB

Air permeability: Class 4

Water tightness: Class 7A

Wind resistance: Class C5

Central Interlock Sightlines: 110mm

Polyamide Strip Length: 16/24 mm

Glazing: Max 30 mm, Min 26 mm

Maximum Sash Dimensions: Width (L) 2500 mm, Height (H) 3000 mm

Maximum Sash Weight: 320 Kg

Transmittance: Uw ≥ 0.9 (W/m²K) 

Acoustic Insulation: Rw up to 43 dB

Air Permeability: Class 4

Water Tightness: Class 7A*/9A**

Wind Resistance: Class C3*/C4**


Frame 180 mm/278 mm 3 rails

Sash 69 mm

Polyamide Strip length: 

Frame 40 mm

Sash 18 / 32 mm

Profile Thickness: 

Door 2.0 mm


Max. 54 mm, Min. 36mm

Maximum Sash Dimensions:

Width (L) 4000 mm, Height (H) 4000 mm

Maximum Sash Weight: 

400 kg Manual

700 kg Motorized

Senior Architectural Systems

Senior Architectural Systems’ range of aluminium sliding doors offer exemplary thermal performance, their quality making them a popular choice for both residential and commercial properties. Designed to meet future building regulations and exceed current ones, these beautiful and innovative doors are available in a range of attractive finishes, including base RAL colours 9910 and 7016.

PURe Slide Inline Sliding Door System

This innovative range of sliding doors is available in heights of up to 3,000mm, the robust design allowing leaf weights of up to 160 kg. Built in the UK to extremely high standards, the Slide range utilises a pioneering jointing method between the head and cill, resulting in outstanding thermal efficiency.
Manufacturing and material quality is such that these doors have a 40+ year life expectancy.

PURe Slide Lift & Slide Door System

Also available in heights up to 3,000mm, the lift and slide door system shares the inline system’s 40+ year life expectancy but is designed to be even more robust; the standard design can accept leaf weights of up to 200 kg, with a heavy duty option raising that threshold to 300 kg. The lift and slide is precision-engineered for smooth and effortless operation.

Senior Architectural System Brochure
White house with large windows patio and furniture

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

Where We Work

Operating from Market Deeping, we provide installations across Lincolnshire, Cambridgeshire and London. From Stamford and Peterborough to Covent Garden, we’re proud to supply luxury doors and windows for property owners in the East of England. Not sure if we install in your area? Get in touch today.

Who Are Klosen?

We supply and install tailored aluminium windows and doors for commercial and domestic properties. With over 25 years’ experience, we deliver a seamless service throughout. Our team will get to know your design tastes and specifications, and we’re more than happy to offer our professional expertise should you require it. Partnering with luxury global brands, such as Cortizo and Senior Architectural Systems, ensures we exceed your expectations on the quality of the finished result.

To find out more about our products and your design options, simply download our brochure or give us a call.


How much do aluminium sliding doors cost?

This very much depends on the size of door required, alongside other factors; if you are able to provide us with measurements and details of the style of door you’d like, we can provide you with a no-obligation quote.

How secure are aluminium sliding doors?

Every door system we sell has been built with security firmly in mind, each featuring a secure locking system and durable double glazing.

What colours are available on your aluminium sliding doors?

Every product is available in the full range of RAL colours, in addition to metallic shades and textured finishes; samples are available on request.

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