Windows have been fitted with glass, known as ‘glazing’, for more than two centuries, and modern advances in glass manufacturing and fitting means that windows are now more professionally glazed than ever before.
Modern window glazing allows customers to get full protection from cold and also inhibit the loss of hot air through panes of glass. Understanding the different ways in which windows were glazed in the past and how double glazing can help to preserve heat, can help you to understand more about your own windows.
The traditional glass in windows was made using small panes of glass cut to fit a pattern which was already in place in the window frame, and the glass was held into position with strips of lead, or with nails placed along the frames. The glass often featured air bubbles, or was slightly irregular, creating the effect seen in many stately homes where the view is distorted and warped by the glass. Traditional glass can often be only gently cleaned, and the frames painted, in order to ensure that the glass is not damaged.
Modern homes have a different type of glass, which allows for much larger pieces of glass to be fitted at once. They are also more likely to be double-glazed, which is where a second pane of glass is fitted behind the first piece, creating a gap between these windows which is used to preserve a layer of warmed air. This reduces the amount of heat which leaves the home, and also prevents cold air from getting into the house through the glass, helping to reduce condensation, and also preserving heat within the home. The effect of heat leakage is considerably reduced with double glazing, helping to reduce the amount of heat you need to keep the house warm.