Can You Paint Fiberglass Shower Walls. If you have a glass shower door it's a good idea to remove it totally and give yourself room to work. However, you will have a sand the walls with fine grit sandpaper or fine steel wool to rough up the gelcoat surface of the fiberglass.
There are paints that you can use to paint your shower walls and shower floor.
When we all tore around on our bikes in the 60s, we used to paint the fairings with enamel, gave them a good rub down first with glasspaper, then painted on the created key, it always seemed to work. With the base installed, the walls of the shower can be. As far as cleaning it, we haven't done anything special. Our shower wall panels are now available in two new solid surface subway tile patterns that take classic to a new level.