Rising damp with render will often demonstrate in “bubbling paint” (it begins out looking extra like pimples within the paint), salt deposits, stains and render breaking down to its base parts (showing up as sand and cement dust). The vast majority of solids diluted during the drinking water are salts. https://dampproofcourse80009.thenerdsblog.com/34518756/damp-proof-course-things-to-know-before-you-buy