Lateral damp usually occurs when the ground on the outside of a wall is higher than the floor level inside. The moisture seeps through the porous bricks and into the internal wall creating an eyesore of peeling paint, salt effervescence and mould.
Ideally the best way to stop this is to excavate the external ground and membrame the outside wall.
However in many cases this is not possible, and in those cases what we do is:
Remove render on the inside wall
Inject a chemical dampcourse above the external ground level on the inside
Tank the wall with a high strength rubberised cement coating
If you have any dampness problems Zenith Remedial are the experts. We will diagnose the source and come up with the solution.