Glass & Glazing Glossary for Erie Homeowners

An inert gas injected between IGU panes that insulates better than air. Standard in energy-efficient windows. Improves thermal performance by about 15% over air-filled units.

The process of installing glass into a frame. Also refers to the glass itself. Single-glazing (one pane) is outdated; double-glazing is standard in Erie.

A putty-like material used to seal glass in window frames. Traditional linseed oil putty is found in older Erie homes; modern silicone compounds are more durable.

A sealed unit of two or more glass panes separated by a gas-filled spacer. Provides thermal insulation. Failed seals cause fogging between panes, common in Erie's temperature extremes.

Glass with a microscopically thin coating that reflects heat. Low-E glass keeps heat inside during Erie winters and blocks solar heat in summer, reducing energy costs.

Two panes bonded with a plastic interlayer. Holds together when broken, providing safety and security. Used for skylights, storefronts, and hurricane-prone applications.

Textured or frosted glass that allows light through while providing privacy. Used for bathroom windows, shower enclosures, and sidelights.

Glass designed to reduce injury risk: tempered glass or laminated glass. Building codes specify where safety glass is required based on location and size.

The component between glass panes in an IGU that maintains the gap and contains desiccant to absorb moisture. Warm-edge spacers reduce condensation and improve energy efficiency.

A measure of how much solar radiation passes through glass. In Erie's heating-dominated climate, a moderate SHGC (0.30-0.40) allows beneficial solar heat gain in winter.

Glass heated and rapidly cooled to increase strength. When broken, it shatters into small, less dangerous pieces. Required by code for shower doors, skylights, and near doors.

A measurement of heat transfer through a window assembly. Lower U-factor means better insulation. Erie homes should look for U-factors of 0.30 or lower.