The information is incorrect. It's not a separate layer that could detach, there are thinner than human hair wires in the laminate layer between the glass layers. The glass heats up in seconds, completely deicing it in less than a minute. It's a Ford thing, had it previously in my Escort. Works like a charm, no annoyances whatsoever. Replacement glass is normal over here (up North). The glass shop must know how to replace it, there are some specific issues reconnecting the cables. You might lose heated parts of the glass (vertically) if the connection is not good.