As the temperature outdoors drops and heating bills rise inside your home, you might be wondering how to seal windows. After all, leaky windows—especially in older homes with single-pane designs—can ...

Q: I've read your recent column about windows and have some related questions. I have dual-pane windows whose cells have "leaked" and the inside surfaces are discolored. They are installed in ...

Q: Can low-E/argon gas be put in a window when the seal is broken, instead of replacing the entire window? A: Let’s start by clarifying the purpose of low-E and argon gas. Low-E (low-emissivity) ...