Black steel window trends 2026: Why they are gaining popularity in homes and offices

• 19 February 2026
• News

A hundred years ago, many of the UK’s style-setters were turning away from the wooden windows of their Victorian relatives and instead, were embracing a whole new trend in home design: steel windows. This was the Jazz Age, and the slim black frames reflected the positivity and drive of the Art Deco period.

In 2026, this aesthetic is still with us, and is as stylish and eye-catching as it always was, with the Crittall brand being at the forefront of this design revolution then and now.

Black steel windows have a unique combination of strength, precision and elegance, making them a design choice that spans many decades, from period homes in conservation areas to bold, minimalist new builds. Heading into 2026, the trend for black steel frames shows no sign of slowing, with UK homeowners and architects prioritising their clean lines, slim profiles and large glazing areas.

Heritage and innovation

Crittall Windows has been at the forefront of steel glazing since 1849, pioneering the original steel window. This heritage continues to influence contemporary architecture, where the industrial look remains a powerful design language. Black steel offers narrow frames that maximise natural light, create a cohesive look and draw attention to architectural detail. Whether in a loft apartment, a modern build or a period property, they balance traditional steel windows with modern functionality.

The elegance of black steel lies in its restraint. Slimmer frames and larger glass areas provide uninterrupted views, allowing interiors to feel connected to the outside. For internal partitions or feature glazing, the same design principles create continuity throughout a property, enhancing the sought-after kerb appeal.

Performance that meets modern standards

Beyond their visual impact, black steel windows now deliver exceptional thermal performance. Advances in glazing, thermal breaks and weather resistance mean heat loss is minimised, reducing energy bills and improving energy performance in domestic and commercial settings. For homeowners concerned about energy costs, black steel frames provide excellent insulation while maintaining the industrial elegance that defines their style.

In comparison to aluminium windows, steel offers narrower profiles without compromising structural strength, allowing designers to achieve larger glass areas and cleaner lines. With sustainability increasingly important, the use of recycled steel further strengthens the case for black steel as a long-term investment in style and performance.

Versatility and customisation

The popularity of black steel windows also reflects their adaptability. Crittall offers a wide range of customisation options to suit every design expectation, from Art Deco-inspired heritage windows to contemporary projects. Frames, finishes and hardware can also be tailored to the specifics of a project.

From modern builds to period homes, from loft apartments to office refurbishments, black steel windows deliver a consistent and refined design language. Their ability to merge industrial character with contemporary style makes them a compelling choice for UK homeowners and designers alike.

• Contact our team today to discuss your project and see how iconic black steel frames can transform your space with light, style and strength.