Black Steel Windows installed within a restored heritage stone commercial building featuring large arched steel-framed windows and traditional masonry architecture.

The Original Black Steel Window, Installed by Specialists

Black steel windows remain one of the most recognisable and desirable looks in architecture, and no one delivers it like Crittall, the original steel window manufacturer. The iconic black finish, ultra slim sightlines and unmistakable rigidity of real steel bring structure and rhythm to a façade while allowing the glass to do the visual work.

As a Crittall Specialist Partner, Lightfoot supplies and installs authentic black steel windows for homeowners, architects and contractors across London, the South East and nationwide, including the Channel Islands. From survey and specification through to precision installation and aftercare, our team manages the whole journey, so your project benefits from genuine Crittall quality and specialist workmanship at every stage.

Suitable for both residential and commercial properties, black steel windows suit everything from listed building refurbishments and period renovations to contemporary extensions and new build schemes. Whatever the brief, they deliver a refined architectural finish with the character that only genuine Crittall design provides.

Key Black Steel Window Features

Our black steel windows are a strong choice for residential and commercial projects alike, bringing together distinctive design, high quality manufacture and dependable everyday performance. With their iconic black finish, slim steel framing and made to measure manufacture, they deliver long term value as well as lasting visual appeal.

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Timeless Aesthetics

Precision crafted frames reflect the enduring appeal of industrial and Art Deco architecture, suiting contemporary schemes and character properties alike.

High Performance

Quality double or triple glazing helps conserve energy and keeps interiors comfortable throughout the year, without compromising on visual impact.

Slim Profiles

Sleek steel frames accommodate large areas of glass, giving unobstructed views, a stronger connection to the outside and more natural light indoors.

Acoustic Insulation

Excellent sound insulation, supported by quality glazing, keeps interiors peaceful even on busy roads and in urban settings.

Security as Standard

Multipoint locking systems and a choice of quality Crittall hardware provide dependable protection without disrupting the clean lines.

Built to Last

High grade galvanised steel and an effective weather stripping system deliver longevity, draught protection and minimal maintenance.

Black Steel Windows above a farmhouse sink in a contemporary kitchen with stone worktops, warm lighting and views across a landscaped garden.

Why Choose Crittall Black Steel Windows?

Black steel windows remain one of the most sought after architectural styles, and Crittall continues to define that look with genuine steel systems manufactured to exacting standards. For architects, developers, designers and homeowners, they introduce strong visual character while retaining all the long term benefits of a high performance window system.

The appeal goes beyond aesthetics. Black steel frames bring structure, definition and rhythm to a facade, while the slim profiles let the glass carry the design. That balance of material presence and lightness is why black steel windows perform so consistently across both residential and commercial projects.

Design Flexibility

Our black steel windows are available in a range of styles and configurations and can be tailored to the exact needs of your project. This flexibility lets you achieve a solution that works with the wider building design rather than forcing the scheme around a standard product. Casement, side hung, top hung and fixed arrangements can all be specified, with glazing bar layouts matched to heritage detailing or pared back for a contemporary look.

Alongside the iconic black finish, frames can be matched to any RAL colour in matt, satin or gloss. Glazing can be tuned for privacy and performance with solar control, acoustic, reeded or frosted options, and a curated hardware range completes the look, from traditional detailing to minimalist contemporary finishing touches.

Black Steel Windows in a contemporary living space overlooking a landscaped garden with slim steel frames and floor-to-ceiling glazing.
Lightfoot Windows showroom

Made to Measure, Professionally Installed

Every black steel window we supply is made to measure for a precise fit. From the first survey and drawings through to final sign off, Lightfoot manages the entire process end to end. Our surveyors establish exact dimensions and advise on the best configuration for each opening, while our trained installers deliver clean, dependable fitting across the UK and the Channel Islands.

With showrooms serving London and Milton Keynes, and a heritage in steel dating back to 1935, Lightfoot brings unrivalled experience to every installation. Book a consultation to discuss specification, logistics and programme with our experts.

Steel vs Steel Look: The Critical Difference

Aluminium heritage systems may echo the familiar grid pattern, but they cannot replicate the feel, proportions or lifespan of real steel. Genuine Crittall black steel windows offer superior structural stability, slimmer authentic sightlines and proven durability, which is why they are frequently specified on conservation led refurbishments and premium new builds where authenticity and performance both matter.

Black Steel Windows above a farmhouse sink in a modern kitchen extension with light grey cabinetry, white worktops and views across a landscaped garden.

Customisation Options

Discover the finishing touches for your black steel windows, from popular colours and exquisite Crittall hardware to downloadable technical resources that support your design and decision making.
  • Hardware
  • Downloads

Hardware

Hardware

Complete your black steel windows with our range of Crittall hardware, featuring both the timeless Classic Collection and the opulent Luxury Collection. Choose from casement handles including the Soho, Phoenix, Deco, Berkeley, Arched, Straight, Scroll and Curved designs, alongside peg stays, sliding stays and folding openers. Each piece is available in a variety of finishes, or can be matched to any RAL colour on request.

Soho Casement Handle

Soho Casement Handle

Deco Casement Handle

Deco Casement Handle

Arched Casement Handle

Arched Casement Handle

Scroll Casement Handle

Scroll Casement Handle

Phoenix Casement Handle

Phoenix Casement Handle

Berkeley Casement Handle

Berkeley Casement Handle

Straight Casement Handle

Straight Casement Handle

Curved Casement Handle

Curved Casement Handle

Straight Peg Stay

Straight Peg Stay

Sliding Stay with Round Knob

Sliding Stay with Round Knob

Sliding Stay with Butterfly

Sliding Stay with Butterfly

Downloads

Downloads

Browse our downloadable resources for detailed specifications and design inspiration, including the Crittall Steel Windows Consumer Brochure, Consumer W20 Brochure, Residential Brochure and Crittall Hardware Brochure.

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Frequently Asked Questions

We understand you may have questions about our black steel windows. We have answered some of the most common ones below, and our team is always happy to help with anything else.

What are the benefits of Crittall black steel windows?

Black steel windows combine sleek, industrial inspired aesthetics with real practicality. Their slim steel frames maximise natural light and glass area, while the high grade steel construction makes them exceptionally durable and long lasting. They are a sound investment for any style of property, from heritage homes to modern developments.

Are black steel windows energy efficient?

Yes. Our black steel windows are fitted with quality double or triple glazed units that help conserve energy and keep your home at a comfortable temperature all year round. Thermally broken systems are available where the project requires compliance with current Building Regulations.

How much do black steel windows cost?

Every Crittall window we supply is made to measure, so the cost depends on the size, style, glazing and customisation options you choose. Contact us today for a free, no obligation estimate tailored to your project.

Do black steel windows require a lot of maintenance?

Not at all. Genuine Crittall frames are hot dip galvanised and finished with a Duralife polyester powder coat, giving long lasting corrosion resistance with minimal upkeep. An occasional wipe down is usually all that is needed, with no periodic repainting required.

What is the difference between genuine steel and steel look aluminium?

Aluminium heritage systems can echo the grid pattern, but they cannot replicate the proportions, feel or lifespan of real steel. Genuine Crittall black steel windows offer slimmer sightlines, superior structural stability and proven longevity, which is why they are the specification of choice on conservation projects and premium schemes.

Where does Lightfoot install black steel windows?

We supply and installs genuine Crittall black steel windows across London, the South and South East of England and nationwide, including the Channel Islands. Our showrooms serve London and Milton Keynes, and our trained installation teams deliver precision fitting wherever your project is based.

What our customers say

Despite being a small project by comparison, from start to finish our project has been executed with precision, promptness and professionalism to deliver a thing if beauty which as we...

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Sharman & Phil

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LOVE. LOVE. LOVE my windows and doors! They look amazing! ? Lightfoot Windows were a pleasure to deal with. Polite, helpful and informative. Plan to use them again for a...

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Adiba Ghauri

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Very efficient and thorough. Quick installation. Very helpful and friendly staff. My new Crittall windows are beautiful.

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Susan Tuffy

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I would like to thank the team at Lightfoot windows for supplying and fitting my new Crittal windows, from start to finish the service has been great and the product...

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Lee

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Excellent windows (Heritage Aluminium french doors). Our builder was impressed with the excellent quality and will be using again. Efficient fitting, fitted perfectly.

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Sophia Barlow

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I am very pleased with the Crittall windows as supplied and fitted by Lightfoot. I visited their showroom and discussed the requirements, and these were met in full. From the...

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David SC

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Probably one the best experiences we've had with a building contractor/supplier. We went to the showroom where we were given all the information we needed and shown the various options...

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Paul Phillips

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Lightfoot supplied & installed a steel Crittal arch for an internal opening. Both the design and install process was very professional and we are delighted with the product. Would highly...

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Richard Simpson

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We have used Lightfoot Windows on two occasions now, and both times their service has been exemplary. The products we purchased are also of a very high quality and we...

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Martin French

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I cannot recommend Lightfoot highly enough. I used to run a business, and the sheer pleasure and relief of being communicated with properly and courteously means a lot. It’s rare...

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Catherine C

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So happy to have found Lightfoot Windows who supplied fire rated Crittall doors and screens. Great showroom full of inspiration. Unhurried great advice given, quote and contract really streamlined and...

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