Damp proofing is a process that prevents moisture from entering a home by applying a barrier to walls, floors, and structures. Here are some damp proofing methods: 

Damp-proof course (DPC): A water-resistant layer installed in a building above ground level to prevent moisture from rising through the structure. DPCs can be made of bitumen, sheets, or specially treated bricks. They should be at least 150 mm above ground level and continuous with a damp proof membrane. 

Wall dampness is the presence of unwanted moisture in a building's walls. It can be caused by a number of factors, including.

Damp-proof chemical is usad as a primer to protect your interior and exterior walls from moisture. The chemical has polymers prevent moisture from seeping in, and some varieties even contain biocides to stop mould and mildew growth.