Your home, reimagined

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Decalu is the next generation energy efficient aluminium window and door system from Deceuninck Aluminium.

With minimalist sightlines and a contemporary understated elegance, our window and door range has been engineered to deliver maximum design flexibility for your next home improvement project.


Create a seamless connection between inside and outside spaces

The Decalu88 Bi-folding Door is designed to help you unlock extra living space in summer. Individual door panes fold back on themselves stacking neatly at one end of the door opening, creating the ultimate connection between inside and outside spaces.

  • Contemporary design
  • Smooth, effortless operation
  • Ultra-energy efficient
  • Wide choice of colours, including dual colour options
  • High security locking mechanism
  • Low sightline gasket – no black lines around glass


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The Decalu163 Lift-and-Slide aluminium patio door creates the perfect year-round connection between your home and garden. It features minimalist sightlines and effortless operation, dropping down onto its track to create the perfect weather seal.

  • Minimalist sightlines and contemporary design
  • Innovative lift-and-slide mechanism. Opening door(s) ‘lift’ for frictionless operation and ‘drop’ into track when closed for ultimate weather sealing
  • Slim door interlocking option
  • Low threshold
  • Ultra-energy efficient
  • Wide range of colours including dual colour options
  • Low sightline gasket


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Book a design consultation

Please fill out the contact form below and we’ll arrange for a local home improvement design consultant to contact you:

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Deceuninck aluminium doors

The Decalu88 French Door

The Decalu 88 French Door uses the same energy efficient sash and frame as the Decalu88 Bifold but in a timeless French Door configuration.

Deceuninck aluminium doors

The Decalu88 Entrance Door

Available in a choice of 21 contemporary flush sash options, where the opening door sash finishes in line with the door frame, plus 30 panel options, the Decalu88 Entrance Door is a premium addition to your home, guaranteeing the highest levels of thermal performance and security.

Timeless design with a contemporary edge. Aluminium windows and doors by Deceuninck Aluminium.

Our window and door range brings together stunning minimalist sightlines and wide choice of finishes alongside proven performance and enhanced security and thermal performance.

Choose from:

Elegant and understated

The Decalu88 Standard Window

A timeless style with a completely flat exterior, the Decalu88 is highly flexible option and suitable for a wide range of applications.

Minimalist high-end architecture

The Decalu88 New Steel

The Decalu88 New Steel Window is defined by a contemporary high-end architectural aesthetic making it ideal for modern statement installations.

Minimalist high-end architecture

The Decalu88 Hidden

The ultimate in minimalist design, the opening window sash is completely hidden behind the frame in this modernist window designed to maximise light.

Sculptured detailing and exceptional design flexibility

The Decalu94 Retro

The Decalu94 is a more traditional window option featuring classic detailing for period installations.

Warehouse and industrial loft style

The Decalu110Steel

Inspired by the industrial trend, this window is perfect for contemporary statement builds.

Deceuninck aluminium windows and doors Homeowner

Colour, whichever way you want it

The Decalu aluminium window and door range is available in a choice of any RAL colour, dual-colour, textured and metallic finishes, giving you complete design flexibility.

Whichever option you choose, every finish is produced to a marine grade standard, which means its guaranteed to stand up to the tests of time and weather.


Our Aluroc range of 16 designer-selected colours offers a seamless finish match with our sister PVC-U window and door business, which means if you do decide to mix PVC-U and aluminium window and door frames, you can achieve an identical finish.

Aluroc – Choose from 16 colours

REF. 003

RAL ± 9016

REF. 096

RAL ± 9001

REF. 078

RAL ± 1015

REF. 908

RAL ± 9006

REF. 909

RAL ± D 085 60 10

REF. 935

RAL ± 7030

REF. 910

RAL ± 7023

REF. 068

RAL ± 7039

REF. 901

RAL ± 7031

REF. 067

RAL ± 7022

REF. 937

RAL ± 7011

REF. 076

RAL ± 3005

REF. 934

RAL ± 7021

REF. 072

RAL ± 7016

REF. 079

RAL ± 5011

REF. 955

RAL ± 9011

*Colours for illustrative purposes only

Find a supplier

We don’t supplier homeowners direct but work with a network of specialist manufacturers and local home improvement specialists, who share our commitment to quality and service.

Please fill out the contact form below and we’ll arrange for a local home improvement design consultant to contact you:

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