I am running a wire from my attic, through second story wall, down to first story. I cut a small hole in the second story wall to drill through the floor but I am hitting something about 10 inches down. Any idea what this is? It sounds like wood.
Should I get a longer bit and keep drilling?
There is a set of stairs on the other side of the wall as well.
Wiring – Running wire in wall between floors
cableswiring
Related Solutions
The early 1900's was the age of horsehair plaster. The plaster was installed in several coats over wooden laths. What you might be hitting is the plaster that as squeezed between the lath and landed on the soleplate. You should be able to tell if it is plaster by its' somewhat crumbly texture. Insert a long screwdriver in the hole and tap it with a hammer. If it is plaster it should easily break-up and leave you with clean hole.
I'd seal around the cable with duct seal, instead of silicone.
It stays pliable, and will not interact with the cable jacket.
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Best Answer
It boggles my mind when folks ask questions like this. How is anybody on the internet, supposed to know what's in your wall? We don't know where you live, what your house is made of, the layout of the house, "10 inches down" from what, etc. Any answer somebody provided would be a guess, at best.
The only way to know for sure what it is, is to open up the wall and look.
If it's ~10" down from the second story floor, it's quite possibly the top plate of the wall below (that would assume 10" or 12" joists). Unfortunately, there's no way to guarantee that without looking. Happy drilling Bruh!