The Cortizo SL20 delivers an amazing blend of contemporary and functional design that enables you to connect effortlessly to the outside. Created using cutting edge manufacturing techniques, these aluminium slimline sliding doors offer one of the slimmest mullion lines on the market.

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  • Contemporary
  • Versatile
  • Resilient
  • Secure
  • Reliable
Aluminium Slimline Sliding Door - Rococo

Slimline Aluminium Sliding Doors

With 20mm-wide mullions the Cortizo slimline aluminium sliding doors create an amazing feature for any home improvement project. With expert surveying and installation, our outer frames and jambs can also be hidden behind plaster lines to create a truly seamless finish.

Used across a variety of applications their aluminium sliding doors are extremely versatile and can be installed throughout a number of key areas within the home. We have installed them in lounges, kitchen diner extensions, garden offices, bedrooms and as linked walk-ways; these multi-purpose doors deliver time after time.

Strong and secure

Cortizo SL20 doors are manufactured using premium quality materials and benefit from the strength and resilience of aluminium. A high-density powder coated finish is applied to create a low maintenance solution and enable an extended colour palette to our customers. U-values as low as 1.4 and water tightness ratings of 7A mean these doors are experts at keeping your home warm and dry.

Each aluminium sliding door slides effortlessly in behind the other and due to the integrated flush handle sit virtually behind the other with very little in the way of overhang; further ensuring that when open the smallest amount of framework is visible.

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Glazing and Drainage

Glazing is a key competent of slim aluminium sliding doors. As standard, these are provided in 6mm or 8mm with a Low E, argon gas and toughened, therefore complying with building regulations for safety and efficiency.

Many of our customers are looking to achieve a virtually flush threshold where the internal floor is the same level as the external floor. For this reason, Cortizo have designed and manufactured a bespoke integrated surface slot drain, which can be used instead of ACO drains or slot drains for patios to create this seamless flow from outside to inside.

Our integrated solution has a custom stainless-steel grid delivering a high-quality look and feel to the immediate area outside the doors.

Take a closer look at aluminium sliding doors...


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Come and visit our exclusive, appointment-only showroom and uncover how you can create your perfect home.

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Available to be viewed at our showroom

As premier retail partner we have a fantastic display of windows, bi-folds, front and sliding doors on display in our showroom.


Call the design team today

Please call the office on 01794 511180 if you would like to speak with one of the design team to find out more information on our amazing sliding door products. We can then discuss the style which will best suite your home and custom design your products to meet your requirements.