concrete floor in bedroom is wet when we lifted the carpet(having on going rising damp problems)

Could possibly be a dpc issue check you have a minimum clearance of 150mm from outside ground level to the dpc level rising damp comes from below reason as to why the window did not sort the issue best case the ground outside needs to be lowered worst case new damp proofing and floor needs to come up and new dpm installed hope this helps thanks.

I think that the issue is condensation. The bedroom is one of the places in the home where it can get bad as each person exhales around 6 pints of water in their sleep. It has to go somewhere! This is further backed up by your saying that you've just had new windows. This is having the effect of further insulating the property but often this is not accompanied with the same level of ventilation. Condensation in homes come as a consequence of three elements being out of sync; 1. Heating. A low temperature, or 'dew point' will allow dew to form if it is in the air, like the mirror in the bathroom during a shower. An increase in temp should bring this element into balance. 2. Insulation. Homes are becoming increasingly well insulated and this is great for thermal values and general coziness, but it can be a bad thing when done incorrectly. removing suspended floors and replacing with concrete removes the flow of air under a property. 3. Ventilation. Most homes in the UK are inadequately ventilated. When this is combined with the above destructive condensation is sure to follow. When this is the case occasionally opening a window or relying on trickle vents won't work. forced ventilation is the only answer for instances where the issue has become problematic. In my experience the only effective cure for this issue is Positive Input Ventilation Systems, something in which I specialise. Condensation often 'pools' on top of concrete floors where there is high humidity, especially if the flooring is covered with carpet or vinyl. I hope this helps.