On 14 Aug, 23:54, "Tim W" wrote:

Last time I used it the principle difference was that the edge was tapered,
on one side only. This was to accommodate the nasty european habit of taping
the join, filling the taper but not skimming the whole face, just painting
or papering onto the plasterboard. In British practice it meant that if you
nailed the edge of the board with it the wrong way round you got a nail head
through the skim, or a piece of broken plasterboard.

I suggest you don't buy tapered board if you're going to skim it.

Cheers
Richard