Damp problems usually start from below ground level. Because the UK has such a humid climate, water often lingers in the soil beneath houses. If a Damp Proof Membrane is missing or faulty, this moisture seeps up through concrete floors. That’s when your rooms begin to feel chilly, damp, and unpleasant. https://www.damp2drysolutions.co.uk/blogs/how-to-damp-proof-concrete-floors-uk-guide/