Do you just start on top of existing sod? You don't have to dig out the existing sod? It looked as if there was sod there. If that is so, wow, that is great! Could the newspaper & mulch really kill out all the existing sod? We have Bermuda and it gets into everything and is tough to get out. But makes a beautiful lawn. But my, how it creeps! I'm afraid I am somewhat dumb on this method, so I'm very curious on details.