I own a home that was built in the mid 70's. It has in-ceiling radiant electric heat that is constructed by putting one layer of 5/8" sheetrock on the ceiling, stapling 240v wiring all over the sheetrock, and then covering that wiring with a plaster-like compound that creates a textured ceiling look. I know how this is put together because I had all the sheetrock on my ceiling in my downstairs family room fall down a few years back. Luckily nobody was down there when it happened. I'm assuming that the sagging section I saw finally came down and all the wiring helped pull all the other sheets down. It was a mess. I'm not sure why it fell. There was no evidence of water damage and they used nails and screws to attach the sheetrock. They were all left in the joists after the sheetrock fell. My problem now is that I have an area in the living room upstairs that is sagging pretty bad. It's an area about the size of two sheets of sheetrock. I know that I need to get into the attic to remove any insulation that has gotten between the sheetrock and the ceiling joists and then prop up the sheetrock. With the wires stapled to the sheetrock, though, I can't just start putting screws in. I need to be able to locate the wires and the ceiling joists from below. I have a nice stud finder that seems to be rendered useless by the plaster type material and the wiring. Does anyone have any ideas how I can locate the wires and joists to be able to fix this on a very limited budget?

I am removing some wallpaper on walls that have wallpaper on the bottom half and had been painted an extra time on the top half after the wallpaper was up...I have 2 questions: 1. While removing the wallpaper that was put over a painted wall, some small areas of paint came up with the wallpaper. How do I fix that before putting on my new coat of paint? 2. How do I paint the entire wall now and not have the line or bump show between the bottom half where the wallpaper was removed and the top half that has an extra layer or 2 of paint.