Can anyone help with identifying this problem. I’ve checked for leaks but cant find any. Ive dug up the soil along the 3 metre damp patch and while the soil is a little heavy its not waterlogged. I guess its the caulking seals higher up the wall. Its a 3 metre long damp patch so I thought it was the soil but maybe not. What else could I do to check the origin of the problem plus solve?