Folk outside the double glazing industry or construction world are unlikely to be able to appreciate the vast amount of technology that nowadays goes into producing thermally efficient, energy saving windows, nor how much there is to learn about today’s technologically advanced replacement windows and doors. No longer are high quality thermally broken energy rated windows, products that can be quickly knocked up and shoved into an existing or new opening, but instead are well designed, technologically advanced energy saving products (or should be if fitted professionally) which save on energy bills as well as adding security and value to any dwelling.
The fenestration industry refers to a Georgian bar as a horizontal and/or vertical bar (usually made of aluminium, PVCU or timber) that goes across windows and doors to give them a “Georgian” appearance. The most common Georgian bar window style in the British Isles is windows with bars that “divide” up the glass area into small squares. This architectural style and design originated in England during the Georgian period, in the 18th and 19th centuries when panes of glass were traditionally divided by thin, delicate wooden glazing bars.
Today Georgian window bars can be integrated into a double glazed window’s sealed unit or mounted onto the front and back of the glass. This “raised Georgian” window bar style is sometimes also referred to as “applied Georgian” or “astragal bars” or even “raised Georgian”. In the case of replacement aluminium and PVCU double glazed windows, aiming to replicate the traditional timber framed look, the sealed units each contain an “inter-bar” in between the two panes of glass to make the product aesthetically pleasing, giving the effect of small individual windows.
The vast majority of customers who opt for Georgian style double glazed windows tend to choose “integral Georgian”, whereby the Georgian window bars (usually powder coated aluminium) are fitted within the sealed unit between the two panes of glass to replicate the same look as the existing wooden windows. In the UK these come in 18mm and 25mm wide as standard. Both have the huge advantages of being a) economic to purchase and b) easy to clean on both sides. The particular advantage of 18mm wide integral Georgian double glazing bars is that customers properties benefit from more glass and light, resulting in clearer and better views out of each window or say French door, as PVCU astragal bars tend to be 25mm wide.
Customers may still decide to have astragal bars to match the look of their existing wooden (often rotten) timber Georgian windows and doors, despite the fact that aluminium raised Georgian costs more to manufacture and apply than PVCU raised Georgian, as aluminium is a stronger more durable and higher specification material. As a general rule, astragal bars cost about five times as much as integral Georgian, as not only do raised Georgian bars have to be fitted to the outside of both panes of glass, but also an inter-bar that exactly matches the dimensions of the applied Georgian bars. Another applied option on glass for windows is square or diamond leaded windows, which come as standard in either 6mm wide, 9mm wide or 12mm wide.
Georgian bars can be made to order to dovetail in with the rest of any property, whether they are made out of timber, PVCU or aluminium. Georgian bars can come as a grid (i.e. in squares) or as a crucifix or as a single vertical bar or as a single horizontal bar or even an arched bar. So hopefully we’ve established that a Georgian bar is not an olden Costa Coffee Shop!
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