How Much Do Crittall Windows Cost? UK Pricing Guide 2026
- July 24, 2026
- General
When planning a high-end home renovation, self-build, or property restoration, few architectural features make a statement quite like authentic steel windows. Renowned for their slim profiles, exceptional structural strength, and timeless industrial look, these iconic frames have become a highly sought-after premium feature across British properties.
However, because every authentic installation is custom-manufactured to order, finding transparent financial figures online for different materials can be incredibly difficult. Many suppliers avoid discussing budget details openly, leaving homeowners in the dark during the early planning stages of a home improvement project.
At Lightfoot Windows, we take pride in our long-running partnership with Crittall Windows Ltd, making us the largest and most experienced Crittall specialist within the Crittall network. We believe in providing clear, value-driven guidance to help you plan your investment with total confidence. In this guide we’ll outlines the key variables that influence the cost of Crittall windows, helping you understand how to budget effectively for your property.
Defining the Baseline: Window Style and Steel Profile Selection
The final cost of Crittall windows is heavily dictated by the specific style of window and the steel profile system selected for your property. True Crittall products are sculpted from high-grade, hot-rolled mild steel, which allows them to offer significantly narrower frames than standard aluminium windows or uPVC options.
Depending on your building type, you will typically choose between two main external profile ranges:
- Crittall Homelight Plus: Mainly used across residential projects, this profile achieves a WER B / DSER A+ energy rating, making it a highly efficient choice for homeowners looking to preserve a period aesthetic without compromising on thermal performance. These frames are optimised for slim profile double glazing and offer a highly cost-effective option for standard domestic openings. On average, a standard small-to-medium Homelight Plus fixed or opening casement window ranges from £1,000 to £1,500 depending on final sizing.
- Crittall Corporate W20: This heavy-duty, traditional steel profile offers unparalleled structural integrity and is the profile behind iconic architectural statements, such as Project Broom Water, which was crowned Crittall House of the Year. It is mainly used on commercial properties, particularly where there is a requirement to maintain the external façade, such as in conservation areas, and is highly favoured for complex installations, larger windows, and expansive multi-panel screens. Due to the extra steel depth and engineering complexity, Corporate W20 windows generally command a 20% to 30% premium over Homelight designs.
The visual layout also plays a massive role. A simple, fixed rectangular pane requires less manufacturing labour than a complex configuration featuring intricate horizontal and vertical glazing bars. If your design requires a multi-section setup, such as a traditional steel bay window, engineering costs rise, with single bespoke bay configurations frequently averaging between £2,000 and £3,500.
Technical Tailoring: Glazing Specifications and Project Scope
The glass you select and the overall scale of your property upgrade are the next major financial factors. Modern manufacturing allows authentic steel frames to deliver exceptional energy efficiency and reduce indoor heat loss, but advanced glass technologies alter your material costs.
- Standard High-Performance Glazing: Modern installations come standard with gas-filled double glazing units. These provide reliable thermal barrier performance that prevents unwanted heat transfer, helping you manage household energy bills effectively.
- Specialist Acoustic Glass: If your property faces a busy urban street or a main railway line, upgrading to acoustic glass with triple glazing reduces external sound penetration significantly. This upgrade generally adds 10% to 15% to the glazing cost.
- Advanced Solar Control Glazing: For south-facing rooms or extensions with massive glass panels, solar control glass prevents excessive solar gain during hot summer months, keeping indoor temperatures perfectly regulated.
- High-Level Security Glass: For critical ground-floor locations, specifying laminated security glass provides maximum protection against impact and intruders, adding invaluable peace of mind.
Beyond the glass itself, the project scope introduces structural economies of scale. Replacing old windows across a full three-bedroom detached house (typically requiring 8 to 12 multi-pane windows) involves fixed costs for surveying, transport, and structural site setup.
Ordering your custom windows as part of a single, unified project scope is always more cost-effective than ordering individual windows sequentially over several years, as manufacturers can optimise material yields and installation crews can complete the fitting faster.
Navigating the Process: How to Get an Accurate Project Quote
Because every authentic steel frame is entirely bespoke, the size of your window plays a crucial role; generic online calculators or ballpark cost-per-square-metre metrics are rarely accurate. To secure an itemised quote that reflects your specific home improvement goals, it helps to follow a structured approach:
- Gather Architectural Drawings or Dimensions: If you are working on an extension or self-build, your architect’s elevation drawings are the best tool for an accurate initial estimate. For straightforward replacement projects, taking rough structural opening measurements (width and height) is completely sufficient for an initial budget overview.
- Specify Your Opening Preferences: Note which sections of the window need to be fixed and which require opening functionality (such as side-hung casements or top-hung vents), as mechanical hinges and weather-sealed opening frames require additional work and extra hardware.
- Select Your Hardware Options: Authentic systems offer a curated choice of handles and peg stays, ranging from traditional heritage brass to sleek, modern satin chrome finishes, which are priced individually.
- Schedule a Technical Survey: Before any manufacturing begins, a professional technician must conduct an on-site laser survey to check structural tolerances, squareness of the brickwork opening, and load-bearing requirements.
The Authorised Advantage: Why Specialist Installation Matters
When investing in premium steel frames, trying to cut corners on the supply or installation phase is a major financial risk. True Crittall products are exclusive, high-value assets, and their long-term performance relies entirely on the precision of the installation.
Choosing an authorised specialist within the Crittall network provides multiple essential protections:
- Guaranteed Authenticity: The market is flooded with “Crittall-style” aluminium or steel copycats that lack the genuine history, hot-dip galvanising protection, and structural lifespan of the real thing. An authorised partner guarantees you receive genuine products manufactured directly by Crittall Windows Ltd.
- Specialist Craftsmanship: Steel behaves differently than timber or plastic. Our installation teams possess specific, factory-approved training to handle heavy, slimline steel frames safely, ensuring perfect alignment, seamless operation, and lifetime durability.
- Uncompromised Warranties: Genuine installations fitted by an approved partner carry comprehensive manufacturer warranties, giving you the security that your investment is fully protected for decades to come.
Plan Your Home Upgrade With the Experts
Whether you are looking to replace tired, old windows with high-performance double glazing or want to introduce an industrial look to a modern property extension, the team at Lightfoot Windows is here to assist. As the UK’s leading Crittall Specialist Partner, we combine unparalleled technical expertise with a committed, personal service across the UK and the Channel Islands.
Get in touch with our specialist team today to discuss your project requirements, explore design configurations, or request an accurate, transparent quote regarding the overall cost of your project:
- London Office: 0208 662 9090
- Milton Keynes Office: 01908 110 118
- Contact us online: Submit your architectural plans or project dimensions directly through our online contact form to receive a tailored estimate.