Wednesday, April 07, 2010

A Brief Digest Of The History Of Glass Windows

By Zara Mazur Colwell

The history of glass windows is actually more interesting and older than you may think it is. The production of glass has been occurring naturally for millions of years but it is the discovery of manufactured glass that leads us on this exciting journey. The first instance of glass being made by mankind can be credited to the Mesopotamians who manufactured their own glass as early as 3500 B. C. The people of Mesopotamia used this man-made glass for simple uses, such as decorating pots or other vessels.

The first instance of glass being used for windows in buildings, especially in Britain, was during the period of the Romans. In the 1st century A. D. It is known that the Romans used glass for a variety of reasons including mosaic tiles, decorating pottery and as windows. It seems that the glass window became more popular with the advent of churches and other places to worship. Most of the earliest examples of Roman window glass are coloured, suggesting that they were stained-glass windows from churches, for example.

Around the world, the need for glass windows (and the manufacture of the glass) did not really take hold until the 13th century. The Germans had found a way of making sheets of glass in the 11th century. This process was later perfected by the Venetians during the 13th century.

During the 14th century, the French managed to perfect the art of blown plate glass (this is where it is hand blown then grinded and polished to look smooth). They also perfected Crown glass which was hand-blown glass that was flattened completely. The French were reluctant to divulge their manufacturing secrets before the 17th century, resulting in Crown glass and blown plate glass not being manufactured anywhere else until this time. Until the 19th century the world saw the rise in popularity of these two types of glass for making windows.

After the decline in popularity of Crown glass and blown plate glass, it was the turn of flat sheet glass. This type was used in windows up until the First World War, in particular for many of the sash windows you can see on older buildings today. After this time, it fell to floating glass, which was designed by Sir Alistair Pilkington in the 1950s, to rise to the top of the popularity stakes.

The history of glass windows does not stop there as we have new, modern types of glass that are found in most of our modern buildings. This includes toughened safety glass and laminated glass, used in many of the double glazing units in use in homes today. The process of making glass for windows is continually evolving, including the wonderful Smart glass that can change the amount of light a window has at the touch of a button. - 2364

About the Author:

No comments:

Blog Archive