LOW‑E GLASS
Energy‑Efficient Low‑Emissivity Glass for Modern Architecture
Low‑E glass, short for Low‑Emissivity glass, is an advanced energy‑saving glazing solution designed to control thermal radiation transfer through the building envelope. By applying a specialized microscopic coating to the glass surface, Low‑E glass optimizes the balance between heat retention and natural daylight transmission — enhancing comfort, reducing energy costs and improving indoor environmental performance.
Low‑E glass is ideal for residential, commercial and institutional applications where sustainability, comfort and long‑term operational savings are essential.
Product Introduction
Low‑E glass is manufactured by depositing ultra‑thin metal or metal oxide coatings onto high‑quality float glass surfaces through advanced vacuum coating processes. This coating creates a selective filter that reflects long‑wave infrared heat back into the interior during cold weather and reflects solar heat outward in hot conditions.
Unlike regular clear glass, which allows significant heat transfer through conduction and radiation, Low‑E glass helps control thermal exchange without reducing visible light. This results in improved indoor comfort and reduced reliance on heating and cooling systems.
Low‑E glass can be used as single glazing or incorporated into insulated glass units (IGUs) and combined with tempered or laminated glass types to meet safety, acoustic and performance requirements.
Key Features
Improved Thermal Insulation
Low‑E coatings reflect radiant heat, reducing heat loss in winter and heat gain in summer.
Balanced Daylight Transmission
Allows natural light while minimizing unwanted solar heat.
Energy Savings
Reduces heating and cooling energy consumption, lowering operational costs.
UV Protection
Blocks a significant amount of ultraviolet (UV) radiation, protecting interiors and furnishings.
Compatibility with IGUs
Highly effective when used in insulated glass units for enhanced thermal performance.
Can Be Combined with Safety Glass
Low‑E glass can be tempered or laminated for enhanced safety and durability.
Typical Specifications
Glass Base Material: Clear float glass, low‑iron glass
Coating Type: Hard coat or soft coat Low‑E
Thickness Range: 3mm – 19mm (custom)
Unit Configurations: Single Low‑E glass; Low‑E IGU with air or gas fill
Coating Location Options: Interior or exterior surface of IGU
Low‑E glass can be engineered to meet performance targets such as U‑value, solar heat gain coefficient (SHGC) and visible light transmittance (VLT) depending on climatic and design requirements.
Applications
Low‑E glass is widely used in a variety of building environments where thermal control and daylight access are priorities:
- Residential Windows & Doors – Comfort and lower utility bills
- Curtain Walls & Façades – Energy performance in commercial buildings
- Insulated Glass Units (IGUs) – High thermal performance systems
- Skylights & Atriums – Solar control with daylight access
- Office Buildings – Reduced HVAC load and improved occupant comfort
- Institutional Projects – Energy‑effective glazing solutions
The performance benefits of Low‑E glass make it a core component in sustainable architectural design.
