I am renovating a very small bathroom in my older home. Due to the size and layout of the house, expanding the bathroom is out of the question so I am stuck having to use the home's old and small tub (it is less than 4 feet long with rounded edges and 2 sides installed up against the walls, including the door casing) because it is the only sized tub that will fit the space. Here is the problem: The shower head is installed about 20" away from the door. So, whenever anyone takes a shower water splashes on to the door casing. The door casing is rotted and needs to be replaced, but I want another alternative to replacing the door casing ever time it rots. Some people have suggested tiling that side of the door casing, but that will make the casing look unsymmetrical and undesirable. I could tile the entire door surround, but that would take away from the historical look I am trying to preserve in the room? Does anyone know what I should do? Standard tub/shower doors are not an option so I was wondering if anyone had any thoughts. Thanks!