Beautiful glass windows can enhance the beauty of any home, especially when you request window cleaning services every 6 months as part of its maintenance. But have we stopped to think about the different types of glass used to make these beautiful windows? Yes. Although they may look similar to each other there are different types of glass and each type has its own qualities that make it different from the others. There are 5 types of glass: Tempered, Annealed, Low-E, Insulated and Heat Strengthened.
Tempered Glass. This is also known as safety glass because it breaks in tiny pieces thereby protecting people from getting serious lacerations and deep cuts. It is four times tougher than annealed glass. Tempered glass is a common choice for storm doors, refrigerator trays, shower doors and outdoor patios because it is very strong. It is processed through chemical treatments and is a lot stronger than normal glass.
Annealed Glass. Annealing is the method of slow cooling of glass to alleviate internal stress. After the glass is formed it is placed on temperature controlled rollers and made to cool slowly. Annealed glass is easy to maintain. Like when window cleaning and you need to use a scraper, because it does not scratch easily. It breaks in big uneven shards.
Low-E Glass. This type of glass is used to cool down building and homes because it is covered by a thin film that either absorbs or reflects UV rays. Its effectiveness depends on how thick the coating is and whether it is positioned on a #2 or #3 surface. When set up on a #2 surface the Low E coating will absorb outside heat decreasing heat absorption and cooling costs. On the other hand, when set up on a #3 surface it will reflect light from inside the room and decrease heat loss during cold winter months.
Insulated Glass. This type of glass is composed of multiple layers of glass panes that are separated by dry air. The panes are sealed hermetically and the air space allows insulation against the transfer of heat or sound.
Heat Strengthened Glass. This type of glass is treated to heat to create surface compression. This is done by heating up annealed glass to a temperature of 1150 Fahrenheit. Both sides of the glass are then cooled down briskly at the same time. This allows the surfaces to remain is a state of elevated compression. Heat strengthened glass breaks similarly to annealed glass. It shatters in tiny pieces preventing deep cuts and injuries in case of breakage.