Windows
Crittall-style steel-look windows
- 6–8 weeks from survey to installation
- Own fitters — no subcontracting
- Prices updated 11 October 2026
Live price ranges
Steel-look heritage window
approx. 1.2 × 1.2 m
Value
REHAU uPVC
—
Contemporary
SMART or AluK aluminium · SMART Alitherm Heritage
£1,500–£2,600
Engineered
Schüco aluminium
—
Signature slimline
Cortizo Cor Vision
—
A survey confirms the final figure.
Overview
Why crittall-style steel-look windows?
The black, thin-framed steel look suits 1930s homes, industrial-style extensions and period properties. Original steel windows are beautiful but cold; modern aluminium gives the same slim look with double glazing.
We don't fit Crittall-branded steel windows. We fit SMART Alitherm Heritage — a British aluminium system designed to recreate the slim steel look — in our Contemporary tier.
The steel look
Slim frames and glazing bars that read like traditional steel windows.
Double glazed
Modern sealed units in an insulated aluminium frame.
Won't rust
Aluminium doesn't corrode like old steel frames.
Classic colours
Black and anthracite, or any RAL colour.
Matching doors
Alitherm Heritage doors so windows and doors match.
Prices by brand tier
What crittall-style steel-look windows cost
| Typical size, installed, each | ValueREHAU uPVC | ContemporarySMART or AluK aluminium | EngineeredSchüco aluminium | Signature slimlineCortizo Cor Vision |
|---|---|---|---|---|
| Steel-look heritage windowapprox. 1.2 × 1.2 m | Not offered in this tier | £1,500–£2,600SMART Alitherm Heritage | Not offered in this tier | Not offered in this tier |
| See your own sizes and options | Not offered | Price this in Contemporary | Not offered | Not offered |
Contemporary
SMART or AluK aluminium
- Steel-look heritage windowSMART Alitherm Heritage£1,500–£2,600
Not offered in Value or Engineered or Signature slimline.
Indicative ranges for London and the South East, supplied and installed, including VAT. Updated 11 October 2026. A survey confirms your final price.
Tiers and brands
Which suits your home?
Styles and options
Made to your specification
Products
- Steel-look windows
- Steel-look French and entrance doors
Details
- Glazing bar layouts
- Black, anthracite or any RAL colour
Glass
- Double glazing
- Acoustic glass
- Obscure glass
Good to know
Planning, regulations and timings
Conservation areas and listed buildings
If your home is listed, in a conservation area or covered by an Article 4 direction, changing the look of windows or doors may need planning permission or listed building consent. We flag this at survey and give you the product details your council will ask for.
Building Regulations and certification
Replacement windows and doors must meet Building Regulations for energy efficiency, safety glass, ventilation and fire escape. Each installation is certified through a competent person scheme such as FENSA, or signed off by building control, and the certificate is yours to keep for when you sell.
Survey to installation
Typically 6–8 weeks from survey to installation, agreed with you up front. One named project manager runs your job from survey to sign-off, and our own fitters do the work — we don't subcontract glazing.
Questions
Crittall-style steel-look windows: your questions answered
How much do Crittall-style windows cost?
A steel-look heritage window (approx. 1.2 × 1.2 m) costs £1,500–£2,600 in SMART Alitherm Heritage aluminium. Indicative, supplied and installed in London and the South East, including VAT; prices updated 11 October 2026. A survey confirms the final figure.
Are these real Crittall windows?
No. Crittall is a steel window brand. We fit SMART Alitherm Heritage aluminium, which recreates the slim steel look with modern double glazing.
Can steel-look windows go in a conservation area?
They often suit period streets, but consent may still be needed if the house is listed, in a conservation area or under an Article 4 direction. We flag it at survey.
Can I get matching steel-look doors?
Yes — Alitherm Heritage also comes as doors, so windows and doors share the same frame style and colour.
Keep exploring
Related products and services
Aluminium windows and doors
Slim, strong aluminium from SMART, AluK, Schüco and Cortizo in any RAL colour.
uPVC windows and doors
A-rated REHAU uPVC — the best-value energy-efficient replacement windows.
Casement windows
The classic side- or top-hung window, in uPVC or slim aluminium.
Brands we install
REHAU, SMART, AluK, Schüco, Cortizo, VELUX, FAKRO and Cambridge Skylights — and the tier each sits in.
Begin your project
Get your price range in under two minutes
Choose your product and brand tier and see a live price range. No obligation, and a survey always confirms the final figure.