Between the 1600 – 1800’s glass was very expensive and windows were made by blowing glass and then spinning into a large circular flat plate. Once the glass was cooled it was cut into small panes. The central piece which had been attached to the blowing iron called the bulls eye was the cheapest part of the glass. Hence windows in older buildings had to have many glazing bars due to lack of availability of larger glass panes.
It wasn’t until Float glass was invented in the 1950’s, where glass is poured onto a molten tin layer where it floated and gave a smooth and flat finish, that large pains of glass became more readily affordable.
Both Astragal bars and Georgian bars are bars are fitted to modern double glazed windows or doors to give a Georgian bar feature like Georgian sash windows. In some houses it is necessary to match existing window styles or in some cases to conform to planning restrictions, to be keeping with the area. Whilst you wish to have the benefits of modern double glazing it is also necessary to ensure the house fits with its period surroundings. Cottage windows or older properties often have either small windows or many small panes of glass. To remove the windows and replace with large panes would spoil the overall look of the property. If you do live in a cottage or older property it is worth checking with the local planning department before having replacement windows.
If you want new windows that match to existing windows then give us a call or visit our showroom on Callywhite Lane, Dronfield.
and you can find out more about our aluminium windows here
What is the difference between an Astragal bar and a Georgian bar?
By using either Astragal bars or Georgian bars it negates the use of individual smaller pains of glass.
The Georgian bars are fitted inside the double glazed panel to give the appearance of smaller panes of glass. From a distance it is difficult to see that they are an internal bar, however on close inspection it is easy to make out that they are fitted internally. The bars are installed during the making of the double glazed panel and sit between the 2 panels of glass within the sealed double glazed unit. These are called Georgian bars.
These bars are fitted to the outside of the double glazed unit. An astragal bar stands proud of the glass. If astragal bars are to be fitted to a window or door, the sealed glass unit will contain a back to back or duplex bar. When viewed close to the window, it gives the appearance that a number of smaller double glazed units have been used, whilst the astragal bar sits on the outside of the glass, replicating the old glazed bar.
If you are having aluminium frames, the astragal bar can be powder coated to match the colour of your frames. Over 200 RAL colours are available for powder coating. The bars can be placed so that they match existing windows in your property.
Crittall Style Replacement Windows
The astragal bars can be fitted to windows and doors to emulate Crittall Style windows.
Cost of Crittall Style Replacement Windows
The cost of Crittall style windows and doors is dependant on lots of factors – the size of the opening, the type of glass that you wish to install, and the number of bars. If you are looking for a quote, don’t hesitate to contact us.
Fret Bar Windows – Clip on Astragal Bars – Surface Mounted Astragal Bars – Astragal Georgian Bar Double Glazed Windows – Glazing Bars – Crittall Style Replacement Windows