Low-E Glazing

Definition

Low-E (Low-Emissivity) Glazing is exterior insulating glazing with a metallic coating to reduce thermal energy transference.

Purpose

Low-E glazing is designed to improve energy efficiency in buildings by minimizing the amount of infrared and ultraviolet light that passes through glass without compromising the amount of visible light. This helps to maintain indoor temperatures and reduce energy costs for heating and cooling.

Examples of Use

• Residential windows: Installed in homes to improve energy efficiency and reduce heating and cooling costs.
• Commercial buildings: Used in office buildings and retail spaces to enhance comfort and energy savings.
• Skylights: Applied in skylights to control heat gain and loss while allowing natural light.

Related Terms

• Double Glazing: Windows with two layers of glass separated by a spacer, enhancing insulation.
• Thermal Break: A material or component that reduces or prevents thermal transfer.
• Solar Heat Gain Coefficient (SHGC): A measure of how much solar radiation passes through a window.

Notes

• Low-E coatings are typically applied to the inner surface of the outer pane in double or triple glazing.
• Different types of Low-E coatings are available, such as hard-coat and soft-coat, each with specific properties and benefits.
• Proper installation and sealing are crucial to maximize the energy-saving benefits of Low-E glazing.