First post on here as I am pretty concerned about a wet patch in my home.
It is on the ground floor (floor is concrete), and is only in one specific area, probably abour 6inches by 10 inches wide. Carpet is soggy to touch, but again, only in this one area. It is in a position where the house was extended, so would be on the external wall (but kitched extended beyond that), and it is at the door element.
No other dampness in this area, and no obvious leaks!
What could cause it? How much of a concern is it? Getting worried with reading other websites (but they are trying to sell something!).