On Sat, 16 Jun 2007 00:01:18 -0700, Chris George
wrote:

IF and only if it is certain that the wall has hygroscopic salts in
it (and you can verify that by testing or as described earlier) then
you have no choice but to replaster or live with the damp.
The objection to re-plastering is often based on the fact that most
commercial companies, quite wrongly, recommend it - regardless of
whether or not it is necessary - to protect themselves. By all means
try to keep it if it is borderline - you may get away with it if the
prospective purchaser's surveyor comes after a dry period.

That's helpful - thanks again...

Mike D