As we come out and look at your projects that you want done whenever you mention tile on the floors or a tile surround we will mention Schluter Kerdi and Ditra. These are guarantee waterproof with a 10 year warranty. We can even do Ditra heated floors for you! We took the liberty to add photos from jobs we have done for examples on how it looks under your tile that makes it waterproof. If you have any questions you can ask us or if you want more in depth information https://www.schluter.com has all the info you would need on the systems.