If you’re planning a renovation and have spent any time on Pinterest, Instagram, or even a weekend at Soho Farmhouse, chances are you’ve come across Crittall-style doors. Elegant, industrial, and effortlessly cool, their black-framed grid design has become a staple of contemporary British interiors.


At Sash Windows London, we understand why this style has captured the imaginations of so many. However, we also know that authentic Crittall steel isn’t always the most practical or cost-effective solution for busy family homes. That’s where aluminium Crittall-style sliding doors come in.

What Are Crittall-Style Doors?

Crittall doors are characterised by their slim, black metal frames and panelled glass design, offering a striking contrast between heritage and modernity. While Crittall is technically a brand (known initially for its steel-framed doors, dating back to 1860), the style has become a design shorthand for any gridded metal-framed door or partition.


Today, Crittall-style has evolved from period steel to include more practical materials, such as aluminium, offering the same iconic look with greater flexibility, improved thermal performance, and enhanced affordability.

Why Aluminium Doors Are The Smarter Alternative

At Sash Windows London, our aluminium doors can be designed to echo the classic Crittall aesthetic—think narrow sightlines, black powder-coated frames, and optional horizontal glazing bars. But beyond the look, they deliver modern living at its best:


Slim profiles
Aluminium allows for narrower frames than uPVC or timber, which means maximum glass and light, with none of the bulk.

Thermally broken for energy efficiency
Our aluminium frames feature advanced thermal breaks, allowing you to enjoy the open plan feel without compromising on warmth or energy bills.

Low maintenance
Unlike steel, aluminium won’t rust. It’s a low-fuss, high-style choice that suits city homes and countryside retreats alike.

More affordable than steel
Get the industrial-glam look without the designer price tag. Perfect if you’re trying to stretch a renovation budget further.

The Perfect Finishing Touch to a Renovation

Crittall-style doors work beautifully in both period properties and contemporary new builds. Whether you’re opening a kitchen-diner, connecting to a garden, or designing a rear extension, these doors offer an architectural edge that feels both timeless and trend-aware.
We’ve helped clients across London and the Southeast achieve this look with our bespoke aluminium sliding doors—and always with the same attention to detail and aftercare that we bring to our sash window installations.

Let’s Make It Happen

We’re proud to offer a complete design, supply, and installation service—so if you’re looking for Crittall-style doors that blend beauty and practicality, we’d be delighted to help. Whether you’re mid-renovation or just starting to gather ideas, our team is happy to guide you through styles, finishes and glazing options.