What Are Sash Windows

Technical Information About Sash Windows

After working within the industry for many years, we have built up a wealth of technical knowledge. We have put together below some handy guides and videos covering everything from fittings, ventilation and sash window furniture.


Our sash windows are traditionally made in UK with the same construction methods used for generations. Our objective is to provide a window that is authentic but with the comforts of modern living standards.


Our sash windows have been designed with ventilation in mind. Watch our video above all about ventilation and how it works.

Window Furniture

We have a selection of window furniture for both single and double glazed sash windows available. View our range below.

Sash Window Locks

Sash windows locks are typically a requirement for household insurance policies. View our video above to find out more.

Window Furniture Finishes

We have a selection of Brass, Antique Brass, Polished Chrome or Satin Chrome window furniture finishes.


We offer a range of traditional mouldings.


Matching original dimensions of traditional sash windows.


We offer a range of glass for all our sash windows.  Double glazed sash windows are our standard but we also offer triple glazed sash windows for further thermal insulation, slim double glazing for conservation area sash windows and traditional single glazing for listed buildings sash windows.

Double Glazing

Double glazing for sash windows explained.

Toughened Safety Glass

Why not improve the security and safety of sash windows with toughened glass.

Laminated Glass

Laminated glass offers a number of benefits over standard glass.

Accoya (Wood)

Accoya provides all the benefits of both a hardwood and a softwood.

For more details go to www.accoya.com

Technical Drawings

Replacement sash window and workings.

Sash Horns, window furniture and mouldings.

Standard sash window

Glazing bars

Sash horns

Casement window

Safety Glass in Critical Locations

It is a legal requirement to fit safety glass in critical locations to all replacement windows, doors and replacement panes of glass.

The below diagram shows the critical areas where safety glazing, for example toughened glass, must be used in new and replacement glazing installations.

The price of any safety glass where legally required will be included in your quote as standard for replacement windows and replacement double glazed sashes.

Toughened Glass must be permanently marked to show compliance with the appropriate Standard and Building Regulations. The following is an example of the marking. The marking is typically shown on the left corner of the glass plane.

Safety glazing is only legally required where a glass pane is either replaced or a new window is fitted. It is not a legal requirement to replace existing glass planes that are already in a critical location.

Further information can be found at the Glass and Glazing Federation.


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