I just purchased a home that needs a little TLC. I need to replace a window in a bathroom, which is located above a bathtub. I have all the material I need. I am asking around to see if anyone may have some tips on what to seal, cover or protect the window from the shower. I Have seen tile used in some other applications. If I do that would I need cement board to do this the right way. Or are there some other options. I am open to Ideas.