“That’s the ,” Sarah said. “It’s a microscopic layer that reflects heat. In the summer, it keeps the sun out; in the winter, it keeps your furnace’s heat inside. And see that space between the panes? It’s filled with Argon gas . It’s denser than air, acting like a thick wool blanket tucked between the glass.”
He spent the morning at The Glass House , a local shop run by a woman named Sarah who had "Glazier" in her DNA. Elias walked in expecting a simple choice: glass or plastic. He left with an education.
Elias settled on . They were easy to clean (the sashes tilted inward), energy-efficient, and fit his budget perfectly.