Low-E Glass

What Is Low-E Glass?

Low-E (low-emissivity) glass has a thin, transparent coating that reflects infrared light while allowing visible light to pass through. This reduces heat transfer through the window, improving insulation and comfort year-round.

How It Works

The low-E coating is typically applied to one or more surfaces of the glass in an insulated glass unit. It reflects heat back toward its source — keeping warmth inside in winter and outside in summer — while minimizing UV damage to furnishings.

Types of Low-E Coatings

Hard-coat (pyrolytic): Applied during manufacturing, durable and suitable for single-pane applications. Soft-coat (sputtered): Applied in a vacuum chamber, offers better performance and is used in most modern dual-pane and triple-pane windows.

Benefits for Bay Area Homes

Low-E glass helps Bay Area homeowners manage temperature swings, reduce glare, and protect interiors from UV fading. It is a standard feature in most energy efficient replacement windows we install.