No, we don't have a dog!!!
A couple of more questions, how do we get the carpet and underlay dry (we have them pulled over at the moment to let the air get to them)
Once we have it dry (I think we will need a new carpet) how do we keep it dry, is it a matter of putting down an insulated...
Yes, I did check for leaks from pipes, central heating etc. There are no pipes near that corner at all, the radiator and fire are over to the other side of the room. The tiles I mentioned are like hard plastic (old lino type - deep red) and no sign of warping or lifting in the joints of them...
The floor is concrete with tiles stuck on, then the rubber underlay and then the carpet. No mold on walls, skirting boards completely dry and solid (not spongy).
The floor underneath is bone dry, no water coming through.
Interstitial condensation is coming to mind. Am I correct or am I on...
We have the same problem. The carpet is very damp and the backing of the underlay is wet as well. However the floor underneath is dry. It is in a corner of our bungalow which sticks out south west facing. No smell or mold on the carpet or underlay, so the conclusion is that it is condensation...