Low e glass introduction

Low e glass introduction

Low-emissvity glass (also known as LOW-E glass) is a multi-layer metal or metal oxide film coated on a glass surface, one or two layers of which are mainly Ag-based. It can effectively reduce solar energy absorption or control energy loss, and greatly reduce the heat transfer coefficient of glass. It can reflect 50%~80% of the heat transferred by glass, especially far-infrared radiant heat, while allowing all or part of visible light to pass. Coated glass. Insulated glass(double glazed units) processed with LOW-E coated glass not only has good energy-efficient and heat-insulating effect.

According to its heat insulation and transparency effects, it can be roughly divided into three categories: high-transmittance LOW-E glass, sun-shade LOW-E glass, and solar shading LOW-E glass.

Low e glass introduction

According to the production method: it can be divided into online and offline low e coating.

1, high transmittance LOW-E glass


a, high visible light transmittance – good indoor lighting, energy efficient, good appearance and permeability.

b,high far-infrared reflectivity – heat transfer coefficient K value (or u value) is low, thermal insulation performance is good.

Product suitability:

Due to its good visible light transmittance, the product is suitable for high-permeability exterior design in any area, which makes the building naturally light and has high transparency. Its extremely high far-infrared reflectivity makes it suitable for energy-efficient glass curtain wall, especially for cold regions.

Low e glass introduction

2, Solar shading LOW-E glass


A, moderate visible light transmittance – visible light transmittance is generally 50% -70%, on the one hand does not affect the indoor natural lighting.

B, extremely high far-infrared reflectivity – heat transfer coefficient K value (u value) is lower than high permeability LOW-E glass, better thermal insulation performance, can effectively limit indoor and outdoor far-infrared heat energy into and out of the room.

C, lower solar transmittance – glass sunshade coefficient SC <0.5, can effectively prevent solar radiation from entering the room.

Low e glass introduction

Suitable type

It can be seen from the above characteristics that the product can effectively block the heat of the sun from entering the room in summer and reflect the background infrared radiation from the outside. Although it restricts the entry of some solar thermal energy in winter, the solar energy intensity in winter is only about 1/3 of that in summer, which has little effect and can effectively block the indoor heating equipment and the infrared heat energy emitted by the human body. A variety of reflective colors, decorative effects, the product can be widely used in the southern region.

3, functional LOW-E glass

Morn pays great attention to product quality and product functionality, and has developed many functional composite low e coated glass.

(1) Double silver LOW-E glass

Double silver LOW-E glass is advanced LOW-E glass, the film layer is more complex, not only has a high transmittance, but also has a very low solar transmittance, which maximizes the filtering of sunlight into a cold light source. The contradiction between high visible light transmittance and low solar energy transmittance is more suitable for cold regions in the north.

(2) ceramic fritted LOW-E glass

With the advancement of technology and the improvement of living standards, people’s requirements for products are not only energy efficient, but also require artistic effects. For this reason, our company’s R&D center has developed a series of various patterns of ceramic fritted glass with low-e coating.

(4) temperable LOW-E glass

The glass forms a strong physical and chemical bond with the LOW-E film layer, which ensures mutual understanding and does not oxidize the film layer during tempering or bending. Detachment ensures that the glass can be hot processed and processed off-site.

Low e glass introduction

  • Triple silver low e glass

Triple silver low-e contains 3 layers AG coatings inside which decrease glass solar coefficient significantly without affecting the light transmittance.Morn has triple silver low e coatings that can compete PPG solarban 70XL, Solarban 90 to suit worldwide projects.

Click here to check Morn low-e glass performance data:coated glass

Morn is your turnkey low e glass and double glazed units supplier,welcome contact us for more info.

Download this article here:Low-e-glass-introduction

Hard coated low e VS Soft coated low e

Low E glass processing instruction

Low-e coated tinted glass-advantage and disadvantages

Low-e glass introduction

The defects of coated glass and solution

Difference between single silver low-e,double silver low e and triple silver low e

Low e coating on tinted glass-advantage&disadvantages

Low-e coating position:Surface #2 VS surface #3 

Related News

Contact Us


Sales Email: marketing@cnmorn.com
Technical support: han@cnmorn.com

Mobile/Wechat: 0086-17705464660

QR code
Hello,welcome to Morn Building Materials.
× How can I help you?