Damp and mould is said to affect 83% of homes in the UK, 43% of which are rental properties. Here’s what to do if you find mould in your home, and what your landlord should do about it Damp and mould is said to affect 83% of homes in the UK, 43% of which are rental properties. Here’s what to do if you find mould in your home, and what your landlord should do about it