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Does space dust fall on the roof of my house?

If I scraped dirt off the roof of my house, would I find traces of rock from space? Could I see it is space rock under a home microscope? Could I drop the dirt into water and see denser space rock

The Norwegian jazz musician Jon Larsen has more or less done exactly that, and even written books about it, including On the Trail of Stardust: The Guide to Finding Micrometeorites: Tools, Techniques, and Identification. It sounds like a rather tedious process, especially if you want to distinguish actual micrometeorites from random fragments of fireworks, degrading roof tiles, etc. An article by Phil Plait(The Bad Astronomer) says that each square meter of surface is hit by 1 - 2 micrometeorites per year.

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