“Never say never,” I have been told. Problem is, I never seem to get that concept. Just a few months back, in response to a reader’s question about a fogged-up double-pane window, I wrote that the ...

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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) ...