Hello there, My house is almost 3 years old and I'm having a problem with a crack on the wall in the living room ( corner area of the archway, please see pictures ). That's the only crack inside the house. Foundation is okay except for for a hairline crack at the other side of the house. This was noted during inspection when we bought the house and it is not getting bigger, so I don't think this is the cause of the wall crack. Last winter though was dry and noticed some of my hardwood floors shrunk a little bit and was squeaking. My question is, how do you fix or patch the crack? It looks like I need to tape the crack first but I'm not sure about the corner of the arch. Do you have any suggestions before I call the professionals to fix this? Thank you.