When it comes to double glazing a JWS replacement sash window or hung sash window is a stylish modern take on a traditional Georgian and very British heritage. Although any window with this style of glazing is technically "a sash", the term is used almost exclusively to refer to windows where the glazed panels are opened by sliding vertically, or horizontally in a style known as a "Yorkshire light", sliding sash or sash and case.
A quality home improvement product like the JWS hung sash window, has taken years to develop and refine, improving upon the traditional design of the sash (made of one or more movable panels or "sashes" that form a frame to hold panes of glass), we take this design concept and utilize beautiful profiles and decorative furniture to bring you the ultimate traditional window.
This type of window provides a maximum face opening for ventilation of one-half the total window area and can be custom made with a variety of glass art designs including georgian bar and diamond lead. JWS Sash Windows incorporate modern materials in their manufacture to create a window with all the style of traditional sash windows yet all the benefits that come with modern construction, they are energy efficient, recyclable, secure and durable.
Jones Window Systems use RCM (Recycled Composite Material) within its window frames. This is supplied as a thermal improvement to either steel or aluminium sections, RCM is an eco-friendly alternative offering superb benefits where the anchorage of hardware is required in windows, casement window sashes and door outer frame. JWS Sash WindowThe method of fixing RCM is simple and is done in the conventional way that metallic reinforcements are fixed. It can be easily welded and can provide 20% – 30% higher weld strength than using traditional reinforcement materials. RCM boasts excellent screw retention, with a screw pull out value greater than steel.
JWS sash windows are a simple and contemporary design based upon the concept and style of the traditional sliding sash window once installed they create a stylised home harking back to bygone traditions with all the modern benefits of energy effiiciency and security. 
Designed to be one of the securest windows available, ideal for areas that require ventilation and easy cleaning while needing to maintain security.
