The buyer's only recourse is a suit at this point. The buyer will need to prove that you were aware of these issues and did not tell them. If an inspector goes and and finds evidence that this has been a recurring issue the buyer can prove his case.
I would get all my documentation together and have an attorney in mind if it comes to that. Good luck!
Better Homes and Gardens Real Estate Town & Country
As long as you disclosed all the material defects you knew about the property, you should be covered. Obviously the Buyer can threaten suit. You should make sure that you have copies of the disclosures in case they pursue damages. You should contact an attorney to protect yourself if the Buyer contacts you about the damages. It is always better to be safe than sorry!
If I can be of further assistance, please feel free to contact me...
Steve Dyer, CRS
Keller Williams Realty
50 Sewall St., 2nd Floor
Portland, ME 04102