Low-e Glass

Low-e Glasses

It provides thermal insulation and energy saving. It lowers your fuel costs.
It is transparent and allows you to use natural daylight
You can benefit from the sun's heat at the maximum level.
It blocks the passage of UV rays by 76%. Thus, it protects your belongings from sun damage.
It saves 50% more heat than double glazing.
Low-E coating reaches the required performances for safety and security when applied on laminated glass.

Low-E or low emissivity (low thermal emissivity) refers to a surface condition that emits (gives off) low levels of radiant thermal (heat) energy.  All materials absorb, reflect and emit radiant energy.  Emissivity is the value (on a scale between 0 and 1) given to materials based on the ratio of heat emitted in comparison to a blackbody.  A blackbody would have an emissivity rating of 1 and a perfect reflector would have a value of 0.  Reflectivity is the opposite of emissivity and when they are added together their total should be equal to 1.
In order to understand Low-E coatings, it is important to understand the solar energy (energy from the sun) spectrum. Ultraviolet (UV) light, visible light and infrared (IR) light all occupy different parts of the solar spectrum – the difference between the three are determined by their wavelengths.

    Ultraviolet light, which is what causes interior materials such as fabrics to fade has wavelengths of 310 – 380 nanometers when measuring glass performance (a nanometer being one billionth of a meter).
    Visible light occupies the part of the spectrum between wavelengths of about 380 – 780 nanometers.
    Infrared light (heat energy) is transmitted as heat into a building and begins at wavelengths of 780 nanometers. Solar infrared is commonly referred to as short-wave infrared energy while heat radiating off of warm objects has higher wavelengths than the sun and is referred to as long-wave infrared.

Low-E coatings have been developed to minimize the amount of ultraviolet light that can pass through glass without compromising the amount of visible light that is transmitted. When heat or light energy is absorbed by glass, it is either shifted away by moving air or radiated away by the glass surface. This is emissivity. Reducing the emissivity of one or more of the window glass surfaces improves a window’s insulating properties. Uncoated glass has an emissivity of 0.84 while some low-E coated glass can have as little as a 0.02 rating. Low-e glass has a microscopically thin transparent
coating, a coating much thinner than a human hair, that reflects heat (long-wave infrared energy).

- It can be used with aluminum, PVC and wooden systems.
- With the energy savings it will provide, investment expenses are completed after the 2nd year.
- These glasses are produced in accordance with the special dimensions to be specified.
- Low-e glasses can be produced including doors and windows.