I was asked by someone if I ever "notched the drywall" ceiling to fish NM cable for fans, lights, etc. Just cut a square of drywall away, slip NM Cable under the joist and patch over the hole and cable with spackle.
I thought he was kidding, then I actually was on a job and saw evidence of this technique. I know it's illegal for a number of reasons, but has anyone else ever seen this?
