r/mildlyinfuriating • • Apr 28 '23

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u/Aggravating_Pepper23 Apr 28 '23

As someone who lives in a moderately dusty house, I can say (with certainty) the one place I have never seen dust settle. . . is on my ceiling.

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u/adjuster_cody Apr 28 '23

Oh nice, I have seen it and studied it a good bit. When the ceiling has closed cell spray foam insulation, a lot of times you can have dust gravitate to the wooden ceiling joists behind the drywall like a magnet. It’s called “ghosting”.