Buyer mystified by stains in house
Nov 13, 2015 1:00 AM - Q. The home we are buying is about 10 years old and seems to be in good condition. However, there are unusual blackish stains on some of the walls and at some of the carpet edges. The seller said he painted the walls and had the carpets professionally cleaned but the stains just came back in a few months. What could be causing this?