ITS A COVER UP!
Damp can not just be plastered over or covered with a lick of paint! It will re appear if the problem is not eradicated fully by stripping the plaster back to brick and installing the correct damp proofing system.
Why do we strip the plaster back to brick? well this is because plaster absorbs water like a sponge and over time the damp will spread and start to form salts, Salts erode the plaster causing bubbling, flaking and in major cases plaster coming away from the wall.
As there are many causes of damp there are different systems designed for the specific cause of damp.
The causes of damp can be from the following: Rising damp, Penetrating damp, Condensation & Leaks/Flooding.
It is always best to have a damp specialist like ourselves to inspect the problem and install the correct damp proofing system which is guaranteed.