On this page
A sealed glazing assembly containing two or more lites separated by one or more spaces, commonly with spacers and sealed edges.
GlassRenu · Educational illustration
Meaning and boundaries
An IGU is the sealed glass assembly, not the entire window, frame, or opening. It is not the same as laminated glass, though a lite within an IGU can be laminated.
Why it matters in glass restoration
Surface location, coatings, seal condition, internal deposits, pressure effects, and access determine whether observed damage is reachable or restorable.
Related terms
References
- National Glass Association — GANA Glazing Manual, 2022 edition
Publisher’s original source - U.S. Department of Energy — Purchasing Energy-Efficient Residential Windows, Doors, and Skylights
Publisher’s original source