When you want to paint over drywall you want to make sure any scars or gouges are filled. Make sure that any marks made by pen or what not is primered so it doesn't bleed through. Your best bet would to be spray and texture the rock, and then paint.
Yes, you can.
By painting over with good primer.
If by top layer you mean the paper, then re-install drywall on that wall.
No, it is not recommended to paint over drywall without any additional preparation. It is important to properly prepare the surface by cleaning, sanding, and priming the drywall before painting to ensure a smooth and long-lasting finish.
You can't. Prime over it with a good primer.
After drywall primer it can.
Not worth trying. -Just paint over it with a good thick paint like Behr premium.
To repair a hole in drywall, you can start by cleaning the area around the hole and cutting a patch of drywall to fit. Secure the patch in place with drywall tape and joint compound, then sand and paint over the area for a smooth finish.
If you used the right paint, Bathroom paint, 2 top coats, over primmer,over greenboard primmer, over greenboard or paperless drywall, then no.
noo!
drywall putty!! fill in the holes with drywall putty, let it dry, then sand it and paint over it... it will look as good as new!!
To patch a hole in drywall effectively, start by cleaning the area around the hole. Cut a piece of drywall slightly larger than the hole and place it over the hole. Secure the patch with drywall tape and joint compound. Smooth the compound over the patch, let it dry, sand it down, and then paint over it to match the wall.