On Wed, 23 Mar 2005 18:16:26 GMT, Tony Bryer
wrote:

I suspect that a couple of good coats of vinyl emulsion would too.

But thats whats recomended for new plaster to allow it to continue
drying out so I doubt it has any vapour seal properties.

If ceiling height isn't a problem then adding a layer of foil backed
plaster board ( the best kind of vapour seal ) is another solution,
plus adds sound insulation. There is no need to remove the boards
already up, with all the waste, mess, hours pulling nails out of the
rafters etx