When a new shower is installed, a fiberglass shower pan is often used. A fiberglass pan provides a strong, stable base for the person using the shower to stand on, but it's also plain-looking and can detract from the appearance of the shower. You can improve the appearance of the shower by laying tile over the fiberglass pan.
Clean your fiberglass tub and shower the easy way. Be sure to get the blue can! Takes off soap scum and hard water deposits. Spray on and leave for at least 30 minutes. I then used a soft sponge scrubbie and wiped and rinsed and wiped and rinsed. Will follow up with car wax on the walls. BLUE CAN!!!
Fiberglass enclosure always leaves 2 foot of drywall above. For those who are not going to put a full tile shower and want to make it look a little better and make it non-maintenance this is your best option. avstile.com