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I seem to have a strange structure to my wall. From tapping and using a picture nail, it seems like the structure behind the wall is like this, where the red squares are stiffer and the rest is plasterboard: enter image description here

I've tried drilling into these stiffer structures and it seems to just be plaster but I meet resistance at about 3cm - possibly metal, I'm not too sure. Any suggestions? My TV mount is a standard flat one, but without a vertical stud, it's hard to know what to do.

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    Is this new construction? Old? House? Condo? Interior or exterior wall?
    – DA01
    Commented Aug 10, 2015 at 16:55
  • What evidence do you have that there are horizontal cross pieces? Just tapping? Or did you use the nail on spots in between the red squares?
    – Doresoom
    Commented Aug 10, 2015 at 17:03
  • @DA01 Sky palace. Commented Aug 10, 2015 at 19:26
  • @MikeMiller I don't know what a Sky palace is.
    – DA01
    Commented Aug 10, 2015 at 19:26
  • @Doresoom tapping and nailed a few spots with a picture nail. Commented Aug 10, 2015 at 19:26

2 Answers 2

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Could be metal. Either metal studs, or you happen to be hitting metal plates used to protect wiring behind. I doubt you have THAT much wiring, so it very well could be that your wall is built with metal studs.

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  • This sounds most likely, it's a fairly new build - about 15 years. Commented Aug 10, 2015 at 19:27
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Could be lath and plaster, depending on the age of the house?

The wood laths (or is the plural still lath?) are run across the studs, and studs can be irregularly spaced if it's an old house.

If this is just a drywall wall, then you might want to just cut a hole in it so that you can see what's going on structurally. You may then need to mount plywood to span the distance between studs so that your mount can sit on something solid - described here Can I hang a TV with one stud and drywall anchors?

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