What is Low-e glass?
Low-e (low-emissivity) glass is coated with a thin metallic or metallic oxide layer that reduces the transmission of infrared and ultraviolet light while maintaining good visible light transmittance. It improves energy efficiency in buildings and enhances indoor comfort.
Applications of Low-e glass?
Low-e glass is widely used in curtain walls, windows, doors, and sunrooms for residential, office, and commercial buildings. It helps reduce air conditioning costs, minimizes glare, and improves natural lighting comfort.
How does Low-e glass save energy?
The special coating on Low-e glass reflects far-infrared heat radiation, reducing indoor heat loss in winter and blocking external heat in summer, thereby improving energy efficiency.
Does Low-e glass affect natural lighting?
No. While blocking UV and infrared rays, Low-e glass still maintains high visible light transmittance, ensuring bright and comfortable indoor lighting.
What’s the difference between single, double, and triple silver Low-e glass?
Single-silver Low-e glass has one silver coating layer, double-silver has two, and triple-silver has three. More layers improve thermal insulation and energy efficiency but increase cost.
What’s the difference between online Low-e and offline Low-e glass?
Online Low-e glass (hard coating) is coated during the float glass manufacturing process, making the layer more durable and weather-resistant. It can be used as single glazing, suitable for curtain walls and windows, but its energy efficiency is slightly lower than offline Low-e.
Offline Low-e glass (soft coating) is applied after glass production using a vacuum magnetron sputtering process, offering better thermal insulation and adjustability. However, it must be used in insulated glass units (IGUs) to protect the coating from oxidation.
