Bob Smith (UK) wrote:

I seem to remember it is some kind of cement mix with waterproofing
additives (lets water vapour out, but not water), then plaster on top for
the final skim.

Never had it properly explained why this is necessary if their damp proof
course was any good... It is called damp *proof*, not damp resistant
course.

Sovereign rendermix is the stuff:
http://www.esecure.co.uk/sovchem/sho...odid=479605705

--
Andy