Low-E Coatings Control Solar Energy. Details Below
The sun emits three different types of light:
- Ultraviolet (UV) light
- Infrared (IR) light
- Visible light
Each occupy a different wavelength in the solar energy spectrum and impact your home in a specific way:
- Ultraviolet, UV, light “bleaches” furniture, pictures, art work, wall coverings, carpet and everything else in your home that is exposed to direct sunlight on a regular basis.
- Infrared, IR, light is transferred into your home as heat energy.
- Visible light is part of the solar spectrum that we see in the form of sunshine and typically prefer to maximize.
The purpose of the low-e coating is to reduce the quantity of UV and IR light without reducing the visible light that passes through the window.
How does it work?
The capacity for a substance, such as glass, to radiate energy is called emissivity. That is the “e” in low-e. Materials that are very reflective have low emissivity or low-e. Conversely, dark colored items tend to absorb energy which translates into high emissivity. The low-e coating for a window is very thin and transparent. In fact, the coating is thinner that the human hair! Low-e coating completes two general tasks:
- During cold weather, low-e coating reflects your home’s interior heat energy back into the house keeping you and your family warm.
- During our hot Florida summers, the sun’s infrared heat energy is radiated out and allows your home to remain cooler.
You have two choices of low-e coating: passive low-e, used in cold climates, or solar control low-e. In our area, solar control is by far the best choice.
If you have any questions concerning glass for your home or office, our team is ready to assist you in choosing the right product for your project. 850-477-6136 or request your free estimate at our web site, www.glassservicesofthesouth.com.