Single Pane Glass
Single pane glass is sheet glass cut in shapes for windows and doors. Due to rising energy costs, single-pane windows are just about obsolete these days. Most windows are now built with double-pane, insulated glass. Single pane glass will cost you much less than dual pane glass, and if a window breaks, a replacement pane will be relatively inexpensive. Double pane windows are going to cost more, and are more expensive to fix. But aside from the difference in price, you will find double pane outclasses single pane in almost every other category.
Dual Pane Glass
Dual Pane Glass is double or triple glass window panes separated by an air or other gas filled space to reduce heat transfer across a part of the building envelope. The glass panes are separated by a "spacer". A spacer is the piece that separates the two panes of glass in an insulating glass system, and seals the gas space between them. Insulated glass technology has been significantly enhanced and improved over time. Over the past 20 years, windows have become increasingly more sophisticated, using new materials with more energy-efficient properties. Single-pane glass has been replaced by double, triple and even quadruple panes, with insulating materials separating the layers.
Safety Glass or tempered glass is a type of processed by controlled thermal or chemical treatments to increase its strength compared with normal glass. Tempering creates balanced internal stresses which cause the glass, when broken, to crumble into small granular chunks instead of splintering into jagged shards. The granular chunks are less likely to cause injury. Tempered glass is physically and thermally stronger than regular glass. The greater contraction of the inner layer during manufacturing induces compressive stresses in the surface of the glass balanced by tensile stresses in the body of the glass. The greater the surface stress, the smaller the glass particles will be when broken.
Low-E Glass has a film that is several layers of metal poured microscopically thin over the surface of newly poured glass. This heat reflective film is transparent but can be darker or lighter depending on the type and manufacturer. Specially designed coatings, are applied to one or more surfaces of insulated glass. These coatings reflect radiant infrared energy, thus tending to keep radiant heat on the same side of the glass from which it originated, while letting visible light pass. This results in more efficient windows because radiant heat originating from indoors in winter is reflected back inside, while infrared heat radiation from the sun during summer is reflected away, keeping it cooler inside.Low-E glass is up to four times more energy efficient than clear glass.
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