What kind of glass and windows are used for skyscrapers?

Skyscrapers typically use high-performance glass, such as low-emissivity (Low-E) glass, which helps to reduce heat transfer and improve energy efficiency. These Windows are often insulated and may include double or triple glazing for enhanced thermal and sound insulation. Additionally, tinted or reflective glass is frequently used to minimize solar heat gain and glare, while also providing aesthetic appeal. Advanced framing systems and curtain walls are commonly employed to support these large glass panels.