Can I safely remove my broken basement window without jeopardizing the joists resting on top of the metal frame filled with concrete?
Asked by Olivia Gibson 
6 months ago
Last Updated: May 16, 2024
I’m in the market for a new basement window since mine broke.
I’m a bit worried about the joists sitting on the metal/frame.
The upper section of the metal frame is filled with concrete.
Do you think it’s okay to take out the entire window, or should I prop up the three joists?
I’ve attached some photos for reference.
YES, you definitely need to provide support for it.
I take out these windows every day for my job to put in bigger egress windows and doors for bulkheads, etc. The 30” width of that window won’t cause any sagging. The joist is supported by being notched into the sill. The metal frame of the window doesn’t bear any weight. However, some local inspectors might have a different opinion just because they can. Removing that window shouldn’t be a problem.
If the metal frame is not in good condition, or if you want a larger window, you could remove the sash and put in a new window directly onto the metal frame.
The joists are most likely held up by the rim joist that runs across the window.
Is there any chance that the frame is compromised? Make sure to have supports on hand, just in case.
If I were you, I’d start by adding joist hangers (or angles, whichever fits) for safety. Then, I’d reinforce those joists. Honestly, I don’t think it’s absolutely necessary, but why not give it a shot? It’ll only take 15 minutes and it’s pretty simple.
Go back 3 feet. Place a 2x across all the joists on the ceiling. Use a plumb bob to find the spot on the floor (without using nails). Make a pencil mark just in case.
After that, install a 2x under each joist. Cut them as close as possible to still fit. Then, insert a wedge under each one (like a shingle under-course, for example a shim). Secure with a nail at the top and bottom.
Avoid cutting the ceiling or floor studs so you can reuse them for something else.
I’m pretty sure if there were any issues, it wouldn’t open properly…
The window may not be directly supporting the joist, but it fits snugly. Maybe it would be easier to just put a window insert into the original metal frame.
To remove the window from its frame, simply pull down the spring latch