No, because fiberglass can make you slip unlike concrete steps
Pool steps can be made of concrete or fiberglass, depending on the construction and size of your pool. Contact a local pool service about the steps. If your pool is properly maintained, there should be no reason to clean the steps. There should be no algae or anything else accumulating on any surface, so do get some professional advice..
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There are kits available for fixing fiberglass steps that are pulling away from the pool. You will need to drain the water below the area where you will be working.
You rub vigorously with hot, soapy water.
You can buy fiberglass steps, all sizes, many colors and finishes (brick, stone, granite, etc) from Mainely Fiberglass, Livermore, Maine. Wide delivery area. No website. Google for more location information. Very friendly and knowledgeable staff.
It is generally not recommended to put fiberglass over aluminum, however, people do it. An epoxy polymer resin is usually suggested, and the fiberglass should be very clean.
Turpentine will not harm a fiberglass bathtub. Small amounts of turpentine can be used to clean stubborn adhesives in the bathtub.
get a Mr. Clean Magic Eraser .... seriously, they are freakin magic.
The fiber glass wasn't coated properly when it was manufactured
by a wet cloth soaked in salty water
ask a pool care tech at your local pool supplier.