Reason for Salt formation in plaster, masonry work

As a result of rising dampness, salts contained in ground water are absorbed into the structural masonry of the building and subsequently into the internal plaster finishing coat. If the rising damp has been severe the plaster finish can de-bond and visual evidence of this potential problem can often be noted by the presence of salt deposits on the internal plaster surface. In such severe circumstances the plaster finish must be removed and re-plastering carried out in accordance with the appropriate specification, to prevent any residual salts in the structural masonry migrating into new plaster finishes. There are, however many situations where the type of salts within the masonry are such that the plaster finish remains in good condition.

In these cases Salt Neutraliser can be used to neutralise the salts in the sound plaster finish thus saving considerable time and expense by not having to re-plaster these areas. There are many other occasions where, even after re-plastering, salts efflorescence can be seen on the new plaster finish. This often leads to a concern that the damp proof course has failed when, in fact, in the majority of cases the efflorescence is due to other factors such as drying out, plumbing or rainwater leaks, condensation or salts in construction materials or salty bricks. Under these circumstances Salt Neutraliser is an ideal product to treat the problem.