Damp is unsightly, potentially unhealthy, and can cause heat loss due to the increased conductivity of the walls. If you notice the tell tale signs of damp the sooner you start thinking about resolving the issue, the less likely for more damage to occur and the lower the potential costs to remedy the issue.
Often, the easiest and most reliable way to do this is to contact an experienced and qualified damp specialist such as ourselves that are familiar with damp problems and the variety of damp treatments available.