damp course - a course of some impermeable material laid in the foundation walls of building near the ground to prevent dampness from rising into the building
Peter Cox installed a new dampproof course using a silicone-based cream, which lines the capillaries of the structure, creating a barrier to prevent further rising damp, while allowing the walls to dry out.
What happens in properties is people get landscaping or paving laid over the existing ground, raising it above the dampproof course barrier, so just check your ground levels.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.