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Steel replacement windows & doors

Aluminium is an excellent replacement for traditional steel
“crittall style” windows and doors.


Our aluminium framed steel replacement windows and doors are designed to replicate the appearance of traditional steel windows. Beautifully designed with close attention to detail ensures that you would be hard pressed to notice the difference from steel windows. The likeness to steel windows is accentuated by the full mechanical joints which replicate traditional items and demonstrates the attention to detail in the manufacture of our steel replacement windows. 

Our very popular aluminium steel replacement windows and doors replicate the slimmer look of steel and create a beautiful feature in your home. They can be used externally or internally as room dividers.

Clarke 1


Why not personalise your new aluminium steel replacement windows and doors with a choice of over 200 RAL colours, and we offer 12 stock colours for no additional cost – please ask for more details.  Twin colours are also available to suit your desired look. We also provide a bespoke range of heritage handles, please ask for more details, or why not pop into our Brasted showroom to view our full range of windows and doors on display.

Should you wish to discuss your extention or refurbishment project with one of our experts, please do not hesitate to call us or complete a quote request online. All of our aluminium steel replacement windows and doors are on display in our Brasted showroom near Sevenoaks with easy access from Kent, Surrey and Sussex. We also provide free onsite consultations and no obligation quotations. Friendly, unbiased, expert advice.

‘Discerning homeowners feel safer with The Window Sanctuary’

Why Choose Aluminium Steel Replacement Windows and Doors?

  • Low U Values + excellent thermal efficiency
  • Slim sightlines
  • Low maintenance
  • Replicates appearance of traditional style windows
  • Over 200 RAL colours to choose from + stock colours
  • Complies with modern Building Regulations.
Click to book a free site consultation


Our range of aluminium steel replacement windows and doors are ideal substitutes for old traditional steel framed windows and doors. Here at The Window Sanctuary, in Brasted, Kent near Sevenoaks, Tunbridge Wells & Tonbridge, we supply and fit a range of slim frame aluminium steel replacement windows and doors that replicate the look of traditional steel windows and doors but introduce the benefits of energy saving and better value for money.  Contact us today for more details on our products.

Our aluminium windows and doors are the best replacement for old steel framed windows also known as “Crittall style windows and doors”.