Install wood floor over wood current floor?
My kitchen contractor says its ok to put new solid wood over current solid wood instead of ripping out old floor. (Kitchen and hallway under 200 sq ft). The concern with tearing out is the floor is not level now (200 plus yr old house and every tear out project uncovers more repairs. I know this is not the "correct" way, but just asking if there are any serious issues with going over current floor. I worry about extra weight, but floor joists seem reasonably stable from what i can see in basement. I understand about problems when floors arent level, but no room in my house has level floors and I havent experienced issues (cupping etc) with the 2 installs previously done, although original floors are warped and squeak. Thanks