Hi. Our living room smelt of damp and on inspection the floorboards were a bit rotten and the crawl space is damp. We presumed it was water coming in from under the concrete path directly around the house so we have removed it and dug down to foundations. The clay/rubble/soil around it was sodden and holding water to the house, presumably running through the grass and through to the clay. Now it’s all removed we’re not sure how to proceed. The garden slopes towards the house so the rain water is now going through the grass and pooling in the trench that’s been dug. Do we backfill it with clay soil again and compact? Put down a membrane against the house? Also, there’s a long sloping bit of concrete that was under the path (see photo). Can we remove it? Any ideas what is is and why it’s there? Any help would be extremely appreciated!!