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Minimalist Appearance
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Transform your home with cutting edge Heritage or modern steel replacement windows.   These unique aluminium windows are perfect for period homes as well modern houses or extensions and come with matching residential doors.  

Slim sightlines combine with impressive aesthetics and dependable window security.  Our bespoke steel replacement windows are perfect for replacing your old metal windows with a modern and thermally efficient alternative.  Or why not create a modern look with industrial-style glazing inside and outside your home?

Designed for replacing existing windows into stone or timber frames as well as direct to brickwork. These beautiful aluminium windows work to preserve the character of your home and meet the latest on-trend designs for steel-styled windows.   You can even match them with the latest steel-look patio doors. 

Technology & Design

Authentic-looking steel look and steel replacement windows use the latest insulated aluminium sections.  These expertly crafted windows come designed with similar aesthetics to classic metal windows and they also offer a modern appearance too for your new extension. 

With slimline frames and opening sashes, face dimensions start at just 33mm for a fixed light and from 58mm for an opening window. The clever design of these advance windows either replacement your old metal windows with a similar style or transform your home with an industrial-style window, screen and even matching residential doors. 

With many older houses having stone or timber surrounds, these windows come designed to fit into your existing window frames or directly to the brickwork.  Best of all you get all the 21st century technology such as multi-point locking, excellent weather sealing, double or triple glazing and a full choice of colours. 

steel replacement windows in a detached post war house, black colour.

Product Details

Traditional steel replacement windows give you an altogether different style of glazing in your home.  Every window comes with attractive slim aesthetics and options for designing traditional or contemporary windows or screens. You also get excellent security and thermal performance. 

  • Classic or contemporary looking windows to preserve or enhance the look of your home. 
  • Available as fixed, opening bay, bow or corner windows, floor to ceiling glazing. 
  • Features the signature slim details and sightline of old metal windows. 
  • Comes with options for contemporary or period window hardware. 
  • Integrates with matching doors, creating beautiful steel-look entrance screens.
  • Can also create contemporary New York style internal screens with or without doors. 

steel replacement windows in a wedding venue, exterior view


Making these windows stand out is a full suite of window handles and accessories. Choose from window handles in a modern or traditional style. For a traditional appearance there are Victorian and Art Deco styles such as Monkey Tail, Bulb. Swan Handles and matching peg stays. Finishes comprise familiar white, black or  silver but also come in stainless steel, Smokey, Polished or Smooth Chrome, black or pewter.

The full range of RAL colour comes to these windows including Sensations and Alchemy finishes offering highly contemporary textured, matt or gloss finishes as well as metallic colours. 

There are also options for enhanced security and safety.  First floor windows come with fire-escape hinges and easy clean hinge or 90degree opening too. 

Finally you get the choice of all types of glass such as obscured and patterned for bathrooms, enhanced security with laminated glass or privacy and shade with integral blinds.  For classic windows there is a full choice of modern or antique leads. 

Security & Performance

Traditional or contemporary windows with all the modern technology of cutting-edge windows and doors. Steel look windows come tested to the latest energy, security and weather performance standards. 

  • U-Value of 1.5 W/m2K, when installed with a suitable sealed unit
  • Window energy rating of B
  • Window sizes up to  2.1m for fixed windows, 1.4m high for side and top hung windows. 
  • Security tested to PAS 24:2016 with suitable multi-point locks, glazing and handles. 

black steel replacement windows in a vaulted ceiling extension

Aluco Steel Look Collection

As well as our standard steel look windows range, we offer the Aluco Aluminium Elegance windows.

These too come with Art-Deco inspiration and the signature sightlines making these impressive windows picture perfect.  Slim glazing bars, period window furniture and a look unlike any other aluminium window.  There’s no better product for replacing your dated metal windows or refreshing your home with today’s sought-after window products.

Every window comes made to order and in the desirable black finish and other special colours. Aluco Aluminium Elegance windows promise you high performance windows packed with style and appeal.

aluco steel-look windows

Product Features


Quality-made, with an authentic period or modern appearance, your windows come hand-assembled with the best components and window parts. Durable corner cleats and chevrons mechanically seal the corners and small gap sealant adds further weather protection.

When you close your new windows, multi-point espagnolette locks secure the window while sealing it from the outside weather. The window handles come with quality locks in a choice of modern or traditional styles. First-floor windows come with fire-escape hinges also offering an easier way to clean your windows from inside your home.

Other options for your steel replacement windows include trickle vents to meet current Building Regulations and a selection of additional aluminium sections tailored to each individual installation. You benefit from a customisable, durable and reliable casement window that looks good and offers excellent security and weather performance.

aluco aluminium window


Your new windows come with energy-efficient 28mm units coated with a low-emissivity material, with insulated spacer bars and argon gas between the glass. Then we apply professionally cut and applied glazing bars working with the mullions and transoms to create the multiple panel steel look.

Customise your new windows with obscure glass bathrooms and cloakrooms. Or enhance ground floor window security with a laminated glass upgrade. For enhanced privacy with shade, integral glass blinds provide shade and privacy with a magnet or cord-control operation and even electrically operated with optional solar sensors.

Your new contemporary metal-style windows deliver excellent glass clarity, comfort and performance.

Dutemänn FD85 Bifolding Doors


The quality of the powder-coated finish can be seen and touched, adding to the overall elegance of these contemporary, slim and beautiful bifolding doors. Black is by far the most popular colour in RAL 9005 matt but you can choose any of 150 other colours too.

For even bolder colours and a highly contemporary window in your home, take a look at our special finishes. Alchemy colours offer gold, bronze, silver, steel and black metallic and anodised finishes for your new doors. Sensations is the latest technology in powder-coating having a metallic and tactile window surface with enhanced durability and an altogether different appearance to your steel-look windows.

colours available with Dutemänn FD85 Bifolding Doors

Energy Efficiency

Insulated glass and aluminium frames combine to provide window energy ratings exceeding the requirements of Building Regulations.

Enjoy lower heating bills with B-rated windows or with a U-Value of 1.5Wm2K with a standard unit and as low as 1.2Wm2K with a triple glazed unit depending on the glass specification and window configuration.

Therefore, your new windows look impressive while working hard to keep your rooms more comfortable and help reduce your energy bills compared to old metal windows.

Some of the images on our website are indicative images illustrating how products may look. Please contact us for full product details and specifications.

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