My husband and I recently bought our first home almost 5 months ago. We closed 5 months ago but have been living in the home less than 3 months. We had a full inspection and were able to resolve any outstanding issues with the seller before closing although we really had to fight to have them fix things. A few days ago we starting stripping trim in our living room with the intention of replacing it with new trim that we had purchased. When we took off the trim next to the newly installed patio door(installed just before the sellers put the home on the market) we discovered that the floor beneath the trim was damp. We thought perhaps the door had not been properly sealed and my husband lifted up some of the hard woor floor to investigate. Under the floor and all around the newely installed door we discovered damp wood and carpenter ant damage. We called a pest control specialist who came out and told us that the damage was old but also told us that the new wooden door frame had been placed ontop of rotted damaged wood. We uncovered the remainder of the door frame and he was right - the new door frame had been placed on very damp damaged wood. Our inspection did not reveale any problems with either carpenter ants or with dampness but obviously at that time they could not have seen this without taking off the trim. My questions is , can we sue the seller because they installed the new door and therefore someone (either the contractor or them) knew about the damage. The door was installed 2 weeks before the house went on the market and we put our offer in the same week that the house went on the market. Any help or advice would greatly be appreciated. We have emptied our saving into this home and have a 2 year old with another on the way.

no point