Jason: If the unevenness is not more than about 1/2 inch or so usually a self leveling floor patch can be used. I'd suggest you have a flooring installer or floor knowledgeable handy person assist and determine best course of action. You can call us to get started with a local pro at 855-494-5972. Or you can search for local pros here: https://porch.com/addison-tx/contractors Thank you.