Double Glazing is insulation for glass windows and doors. By sealing a narrow pocket of still dry air between two separate sheets of glass, you significantly improve the insulating performance of the window.A Double glazed unit can be known as a DGU or a IGU.As much as 30% of the heat lost from your home is through windows. This could cost you hundreds of extra dollars every year in heating and cooling bills. Double glazing is extremely energy efficient.
Toughened glass cools quicker than most other types of glass, and that makes it stronger. It’s made by reheating basic annealed glass and then cooling it rapidly. This is called “air quenching” and makes the glass about four times stronger than annealed glass of the same size and thickness. Toughened glass has more tensile strength—meaning it can bend easier without breaking. It’s often used in big windows or skyscrapers, since it’s more wind resistant. If tempered glass breaks, it shatters into rounded cubes rather than shards.
Laminated glass is actually made of two or more panes of glass that are joined together by a layer of plastic, or polyvinyl butyral (PVB). The plastic comes in varying sizes, and it can be clear or tinted.You’ll almost always see it inside skylights, because it’s more energy efficient and can screen out ultraviolet radiation. One of the biggest benefits of laminated glass is that if it does break,the broken glass sticks to the plastic rather than falling to the floor and potentially creating a mess.
Float glass is not something that everyone is familiar with, but this way of insulating the home has been around for years. Basically, when you hear people talking about double glazing they are referring to windows that have 2 panes of glass which are separated by a thin layer of air. Most homes and businesses, especially in South Africa, have only got a single glaze which means they only have a single layer of glass.
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