I am trying to mount a TV onto an "exterior" wall. I used the quotes because I guess technically it may not be exterior (I live in a townhouse with dividing walls between the houses).
Anyway, I've done this before at a different location with no problems. However, I am drilling guide holes and cannot seem to drill into the wall more than 1.5" (not sure the width of the sheetrock in that). I've tried drilling into multiple studs at multiple heights and get the same issue.
I do not want to saw the drywall just to look at the stud. Does anyone have any guesses as to what might be going on?
House was built in the 70s
Tip of drill bit is much hotter than I'd expect.
Didn't have this issue with the stud in-between the two studs in question.