Hi, just wondered if anyone could give me some information/help. I have a 1901 end terraced house which has a concrete floor throughout which is slightly below street level. Unsure of DPC. Last year I had laid a new vinyl flooring in the kitchen and utility (i may just add that previously the utility had bare concrete and the kitchen had a very old torn and tatty vinyl which just covered the middle of the room). As the colder weather came I noticed this new vinyl was rucking slightly in the middle of the rooms, on lifting this I found the floor to be quite damp. Could it be that the vinyl isn't allowing the concrete to breathe? And if this is the case is there any sort of floor covering I could use which will do this?