Was thinking about hanging our tv in the bedroom on a wall mount. The lag screws to hold the mount are long enough to hang my hat on the excess on the outside. What size screws are big enough to hold ...
If I could not determine what kind of backing those walls have showing one of those 'MOUNT HERE' stickers i would add a 1-inch back board to mount the TV Mount too...
You certainly don't want a large TV set pulling the screws through the thin walls...
Something like these wall mount photos...
You might able to tell where the added board to the back of the wall exists by just tapping on the wall... It will sound solid all the way across it if a board is behind it...