With the intention of painting, we stripped the wallpaper off the walls in one room of the house we just bought -- only to find that under the wallpaper is sheetrock that has been painted without the joins having been taped first: the joins appear to have been been spackled to fill the gaps then sanded to smooth out the transitions, and then the whole lot painted.
I am not sure that simply painting over this lot again is going to do the trick, but what do we need to do? Can we merely tape over the (painted) joins then apply drywall compound? Or do we have to remove the paint in the region of the joins before taping? Or is it OK to just paint over the whole lot?
-- MB