Where a box sash window has been converted to a different style we can reinstate this to a fully functioning double hung timber sash window.


Over the years many box sash windows have undergone various conversions such as fitting aluminium, louvre, pivot or casement window sub-frames. Fortunatley the original box frame is often left intact and we can undo the conversion to reactivate them into a fully functioning double hung sliding sash window.

After removing the existing window conversion we fit a balance system including new pullies, cords & weights. We undertake repairs and install our authentic replica bespoke wooden sashes into your existing timber frames, paint finished and glazed with a range of glass including Comfort Hush.

All of our draught seals are designed to be as unobtrusive as possible, being machined into the timber components to become an "invisible" part of the window.  The original heritage appearance of the property is restored with all the benefits of modern windows

If the original box frame has been removed then a complete window replacement will be required. 


Bay window- remove conversion and reactivate as sliding sash Completed reactivate to sliding timber sash window.

Louvre and solid panel glazing. Completly restored bay window.


Reactivating box sash windows to their original vertical sliding sash design.


Georgian sash window. Georgian Double Glazed sashes. 



Our Sash Reactivation Service includes:

  • Survey of the existing frames
  • Removal of the unwanted conversion
  • New Weight System installed
  • Our standard Restoration & Draught Seal service.

  • Bespoke replica timber sashes
  • Balancing the weighting mechanism, to ensure ease of operation.
  • Large selection of glazing.
  • A choice of paint finishes.
  • A wide range of ironmongery in a choice of finishes.

Double Glazed Replica Victorian Sash.



sash window castellated double glazed sash.


Authentic Wooden Replicas


We carefully reproduce a copy of the original sashes using any photos you might have or by referencing a neighbouring property.

Choose from a range of glazing options either single or double glazed.

Offered in a wide range of timbers and finishes.


Large selection of glazing

  • Hush Glass
  • Comfort Hush

  • Safety Laminated Glass
  • 'Low E' energy efficient glass
  • Etched or patterned glass.
  • Float Glass
  • Double Glazing
Double glazing for heritage windows.