There is an undeniable need for specialist damp proofing plaster to be used across London and Berkshire.
There are different reasons why this type of plaster should be installed, we have visited some of these below.
Even after the underlying problem of rising damp has been fixed there are moisture attracting salt deposits left behind. It is typical to find high concentrations of these salts left in masonry, brickwork and what appears to be unaffected plaster. The salt will have been desposited there during the time you had rising damp. Usually the salts are potassium carbonate, calcium chloride or sodium chloride.
Even though the structural damp will have dried out the salts are left behind and these continue to attract moisture and draw it into the wall.
The problem is that rising damp draws ground water up into the wall and the salt is present in this water. You cannot rid the wall of the salt therefore action is needed to prevent them from attracting moisture and leading to a further damp problem.
You need to prevent the moisture absorbing salt from reaching the new outer surface of the wall and you also need to stop any moisture from damaging the new plaster that has been applied.