Tub Surround

[James H.]

I am about to renovate a bathroom in a low income rental. My main concern is the shower/tub. I think I want to use FRP panels just like what you find on gas station restroom walls in the tub surround (maybe the whole thing!). I think this could be trimmed around the window and be durable. The tenants can hang a thingy on the shower head if the need shelves in the shower.

If I use this kind of material (or even a cheapy plastic 5 piece tub surround) does it matter what is behind it (e.g. sheet rock, green board, etc.)?

Any other suggestions for low cost tub/shower fixes that accommodate an existing window in the tub surround area?