this post was submitted on 16 Feb 2024
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Do It Yourself

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Hello, I’m back with another question. Everything a read is telling me yes I can, but it really does not feel right so I’m gonna ask here for good measure. Can I run electrical wire through fiberglass insulation?

In several rooms upstairs the wire comes out of the center of the ceiling then goes across to the window where a fluorescent tube light is installed. Below all that is a drop ceiling tile with insulation packed on top of it. I want to take the fluorescent light out and put a normal light back in which is easy enough. My concern is running the wiring through the insulation. Everything says running it through insulated walls is fine and the insulation itself says it’s non-combustible. But can someone confirm that I’m reading the right stuff?

There’s a gap between two pieces of insulation that I want to run the wire between. Picture attached. Not sure how old the insulation is if that is important.

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[–] [email protected] 17 points 9 months ago (1 children)

If it helps any fiberglass isn't called that for funsies. It's actually made of glass fibers in a resin. It's not any more flammable or conductive than any other kind of glass/resin combination. The most important safety advice for using it is to wear gloves and protective glasses, because having lots of tiny glass fibers break off in you is super itchy, and your hands are right up in there, and itchy eyes are just the worst.

[–] [email protected] 4 points 9 months ago

I knew it had glass in it but I wasn’t sure if that’s all it was made of. That and the paper backing just made me want to be cautious. But I do know how to handle insulation from tearing a room off my grandparents house a few years ago.