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TRADING SINCE 1849

Crafting beautiful steel windows and doors since the reign of Queen Victoria.

HANDCRAFTED TECHNOLOGY

High-quality, hand-crafted products that are designed to last a lifetime.

NATIONWIDE COVERAGE

Discover our exceptional products no matter where you are in the UK.

Crittall steel-framed window with a scenic outdoor view, framed by sleek, modern design.

The Case for Steel in Premium New Build

Steel is the only fenestration material that combines structural strength, slim sightlines and long-term durability at the level required by premium residential specification. Where aluminium requires thicker profiles to achieve comparable strength, Crittall steel windows maintain slender proportions without compromise — delivering more glass, less frame and an abundance of natural light into the home.

For architects, this structural advantage translates directly into design freedom. Larger glazed openings, floor-to-ceiling configurations and expansive bifold arrangements are all achievable without the visual bulk that alternative materials introduce into the elevation.

For developers, hot-dip galvanised, Duralife® powder-coated steel represents a long-term asset protection decision — reducing maintenance obligations and supporting the premium positioning of the development in the marketplace.

Compare Crittall® Ranges

Find the right window for your project.

  • Case Studies

Our Recent Work

Another angle of the Crittall steel-framed window showing a seamless blend with the surrounding architecture.

Ambitious project in South West London by Bespoke Design Glazing

This case study shines the spotlight on a compelling project that secured a runner-up position...

Modern property exterior featuring black crittall windows and doors with glass balustrade balcony

Restoration in rural Sussex by Lightfoot Windows

This project, executed by our specialist reseller Lightfoot Windows, focused on a listed property in...

Modern property with white facade, featuring crittall steel windows and doors

Modern renovation in South Yorkshire by KJA Services

The Crittall House of the Year (CHOTY) awards celebrate our commitment to excellence by recognising...

Exterior of Adelaide House, an office building in London

Crittall windows that truly stand the test of time

Crittall Windows recently returned to Adelaide House in London to replace the steel windows it...

Black steel french internal doors

Crittall House of the Year Award Winner 2023

Congratulations to the deserving winners of this year's Crittall House of the Year Award with...

Full installation of light grey steel bespoke windows, casement windows, and french doors

Crittall House of the Year Award – Runner Up 2023

When the owners were planning the renovation of their house, they knew they wanted to...

Design Flexibility

Tailor your vision with a range of colours, hardware finishes, and window configurations. Explore our downloadable resources to find inspiration and technical specifications to bring your design to life.

  • Hardware
  • Downloads

Popular Colours

Black
Traffic Grey
Agate Grey
Light Grey
White
Pastel Green

A colour to suit your project

Our steel windows are available in a wide range of bespoke colours, including our signature black steel. We take pride in providing high quality windows that are coated with Duralife Polyester powder, guaranteeing a consistent and durable finish. With so many options available, you're sure to find the perfect match for your property or project.

Selected: Black

Black

Selected: Traffic Grey

Traffic Grey

Selected: Agate Grey

Agate Grey

Selected: Light Grey

Light Grey

Selected: White

White

Selected: Pastel Green

Pastel Green

Hardware

Hardware

We offer a wide range of high-quality window and door hardware options. Our partnership with Frank Allart, makers of fine English hardware since 1914, ensures that you have access to the best in craftsmanship and design.

Soho Casement Handle

Soho Casement Handle

Phoenix Casement Handle

Phoenix Casement Handle

Deco Casement Handle

Deco Casement Handle

Berkeley Casement Handle

Berkeley Casement Handle

Arched Casement Handle

Arched Casement Handle

Straight Casement Handle

Straight Casement Handle

Scroll Casement Handle

Scroll Casement Handle

Curved Casement Handle

Curved Casement Handle

Sliding Stay With Round Knob

Sliding Stay With Round Knob

Sliding Stay With Butterfly

Sliding Stay With Butterfly

Straight Peg Stay

Straight Peg Stay

Curved Peg Stay

Curved Peg Stay

Single Folding Opener

Single Folding Opener

Downloads

Frequently Asked Questions

We understand you may have queries about our products and services. We’ve answered some of the most common questions below.

Are Crittall steel windows suitable for premium residential new build projects?

Yes. Crittall steel windows and doors are regularly specified for premium residential new build projects across the UK. Our products are made to order, manufactured in Britain and available in a full range of configurations to suit architect-designed private houses and high-end residential developments. The Corporate W20 TE® and MW40 systems are the primary recommendations for new build residential specification, delivering thermal performance, security and design quality appropriate to the premium end of the market.

Do Crittall steel windows comply with Part L Building Regulations for new build residential?

Yes. Crittall's thermally enhanced W20 TE® system is designed to meet current UK Building Regulations Part L requirements for new build residential properties. The system incorporates integrated thermal break technology to achieve low U-values without increasing profile width. Our specification team can provide the relevant technical data sheets and U-value documentation required to support a building regulations submission.

Can Crittall windows and doors be specified for large glazed openings in new build homes?

Yes. The structural strength of steel allows Crittall windows and doors to span larger openings than alternative fenestration materials while maintaining slim profiles. Floor-to-ceiling configurations, corner glazing arrangements and wide bifold or sliding door systems are all achievable within the Crittall range. Our specification team can advise on the correct system and configuration for your specific structural and design requirements.

What security options are available for Crittall doors on new build residential projects?

Security is built into the Crittall product range as standard. External doors are available with multipoint locking systems and quality hardware across both the Classic Collection and Luxury Collection ranges. Selected configurations are tested to recognised security standards including PAS 24.

Are Crittall products suitable for residential new build projects seeking sustainability credentials?

Yes. Crittall steel windows and doors support sustainability objectives in several ways. Steel is infinitely recyclable without loss of strength, and our products are manufactured with longevity as a core design principle — meaning embodied carbon is distributed across a significantly longer service life than most alternative fenestration materials. Our internal doors are made using recycled steel, and the minimal maintenance requirement of Duralife® powder-coated steel further reduces the environmental impact over the lifetime of the building.

Can Crittall internal screens be specified alongside external windows and doors in a new build project?

Yes. Crittall's Innervision® internal screen and door system is designed to work alongside our external window and door ranges as a fully coordinated interior and exterior fenestration specification. This is increasingly popular in premium new build homes where architects and interior designers seek a consistent steel aesthetic throughout the property — from the external elevation through to internal room divisions, kitchen screens and garden room connections.

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Thermal Performance & Building Regulations Compliance

All Crittall products for residential new build are manufactured to comply with current UK Building Regulations, including Part L thermal performance requirements. The thermally enhanced W20 TE® system incorporates integrated thermal break technology, delivering low U-values without increasing profile width. Modern thermally improved frames with double or selected triple glazing can meet Part L targets, subject to specification.

For developers working to energy performance targets or seeking to differentiate on sustainability credentials, Crittall’s steel windows and doors support those objectives. Steel is infinitely recyclable without loss of strength, and the longevity of our products means embodied carbon is spread across a significantly longer service life than alternative fenestration materials.

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Black steel french doors in East London
Homelight Windows on residential home

Products Recommended for Residential New Build

Corporate W20 TE® Windows & Doors

The thermally enhanced W20 TE® system is the primary specification for premium residential new build. Slim profiles, low U-values, advanced security and full compliance with current building regulations make it the complete new build solution.

MW40 Windows & Doors

For contemporary residential schemes requiring a wider profile system with high-performance glazing capacity, the MW40 delivers impressive thermal performance and a bold architectural presence suited to modern new build design.

Innervision® Internal Screens & Doors

For the interior of premium new build homes, Innervision® screens and doors create defined living spaces without sacrificing natural light or visual connectivity between rooms. Increasingly specified by architects designing open-plan family homes, kitchen extensions and garden room connections.

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Specification Support for Architects & Developers

Crittall provides full technical documentation to support residential new build specifications, including NBS clauses, CAD drawings, data sheets and 3D ISO renders. Our specification team works alongside architects from early design stages through to construction, ensuring the correct product and configuration is resolved before planning submission where required.

All products carry Made in Britain, FENSA and CHAS accreditations — supporting both planning applications and developer procurement requirements across private residential schemes.

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Black steel single and french doors
W20 grey french doors

Start Your Hospitality or Retail Specification

Contact the Crittall team to discuss your project, request a specification pack or locate your nearest approved Crittall Specialist Partner.

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Trio of french doors for London home

Start your Crittall journey

Transform your home by finding your local Crittall approved installer. Our specialist partners offer a stress-free service from enquiry to after-sales support.






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    Customer Reviews

    Take a look at some of our customer reviews to see how Crittall windows and doors have transformed real-world spaces. Customer reviews offer valuable insights beyond aesthetics, providing details on installation experiences, long-term performance, and the overall impact Crittall's windows and doors had on their projects.

    The Crittall design meant we could retain a traditional feel which would fit with the overall look of the house.

    KAREN WELSTEAD

    Scotland, UK

    All of our visitors comment on our stunning doors and we all love the beautiful shadows in the kitchen created by the frames – its like a cobweb of shadows!

    HANNAH

    SW London, UK

    ‘Nothing shouts 1930’s elegance like original Crittall windows … We feel as though we are on the set of a Poirot shoot when we walk inside’

    HARRY & VIC

    Lake District, UK

    Fully Accredited Manufacturers

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