We had added on a room to our home. At the time we didn't have money to do it totally right. Half of the flooring is concrete and the rest is wood. The problem is that it's not leveled where the concrete floor and wood floor meet. Is there a way to get it leveled with out tearing things out. Some type of cement product? It is a bedroom and the cement is on the ground of the house; the wood has crawl space under it.