B. Johnson wrote:
In the past 2 or 3 years we have hung new sheet rock in a few of the
rooms in our home. We have noticed that you can now see where the
screw heads are. They look like dark spots on the walls. The screws
aren't pushing through they are just showing through. Any ideas on
what we are doing wrong? Thanks!

Didn't set them deeply enough and mud them sufficiently, most likely.
Need to dimple the paper, but not pull through to break it.

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