Lords_of_Lands t1_jdddsf2 wrote on March 23, 2023 at 4:20 PM

You don't need to replace them. Old windows with storm panes are good enough compared to moderns windows while costing significantly less and won't need to be replaced every 15 years.

Basically you just replace any rotting wood, caulk the gaps, paint, and you're good to go. Having a good seal is what's important. If you're concerned about shards of glass from a broken window, you can buy shatter resistant protective film that's cheap and trivial to install.

Learn more here: https://www.energy.gov/energysaver/storm-windows

Keep in mind everything in your house is going to have lead paint if the windows do. If any floors are painted, there's lead under there too.

nixstyx t1_jddnt6n wrote on March 23, 2023 at 5:23 PM

I would whole heartedly disagree with you. Perform an air intrusion test or just use a thermal camera and you'll see why windows from the 1940s are not good compared to modern windows. It's not just the glass itself, it's also how the window frames were installed (i.e. without insulation around them). Storm panes don't do anything to help that. And the idea that anyone would need to replace modern windows "every 15 years" is baffling. Modern windows are going to last a lot longer than that, and more importantly, they'll function a lot better. These modern storm panes are permanently installed, meaning you can no longer open the window. That's a deal breaker for most people who like some airflow after a long stuffy winter.