These types of bathroom tubs and enclosures are usually treated the same as others made out of different materials.|
(See our section on bathtubs and showers).
If however, the problem is not soap scum, mold or water/mineral stains, then most likely the gel coat on the fibreglass has worn-out and needs to be repaired or replaced. Open, exposed fibreglass pores will stain very easily.
There are excellent fibreglass repair kits available that can do a good job restoring the gel coat.