Low-E Coatings

Can you explain what Low-E coatings are?

Low- E stands for low emissivity. Windows with low-E coatings reduce the amount of heat that is transmitted through the glass. Many homeowners have experienced sitting next to an older window and felt either excessive heat or an extreme chill; Low-E coatings were invented to reduce these uncomfortable scenarios. What exactly is a Low-E coating though? Low-E coatings are made up of a series of nearly invisible layers of various materials and rely on one or more silver layers to reflect exterior and interior heat.