The previous owners thought it was a good idea to put wood in for window frame, paint it white, and call it a day. Problem is, this is right in the shower and gets wet like nobody's business. I want to rip this out and tile it, but I guess I'm a little apprehensive about what I will find under it. Plus, as a new homeowner, I've never tiled before.
Here's some pics:
How should I go about this?