For this method you ll need chlorine bleach and a non abrasive brush.
How to remove stains from fiberglass shower floor.
If you have a fiberglass shower that has a textured non slip floor you probably know how hard it is to keep it clean.
If the floor of your fiberglass shower is home to tough mildew stains you can remove them with chlorine bleach.
Mildew and mold can cause some frustrating stains that can make your shower floor look old and dirty.
If your shower floor is made of marble brown stains might be caused by rust.
Try removing mildew stains with bleach.
Some marble may contain iron deposits.
My fiberglass shower pan has a stain presumably from hard water that i cannot remove.
This is a problem i fought for years.
How to remove soap scum and hard water stains from a fiberglass shower.
If necessary use a nonabrasive brush or cloth to scrub the stain.
Remove mildew with bleach.
It can also be a major health concern for you and your family.
Soap scum and mineral deposits from the water build up in the indentations and are almost impossible to remove.
Removing stains from fiberglass tubs and shower enclosures requires the right cleaning solutions and careful application to avoid damaging the finish.
Fiberglass bathtubs and showers may develop stains from hard water or mold and may be marred by paint and adhesives.
Apply a small amount to the stain.
Mildew is unfortunately commonly found in and around the shower due to the moist environment.
I have tried.