Re: How to clean plastic sink?
Anything that is labeled "for fiberglass" should also work on anything that is made of cast POLYESTER resin. I don't know about other plastic resins.
What we think of as "fiberglass" tubs and sinks only use fiberglass for the structure; the glass fibers are bound in a polyester resin. The working surfaces of the tub or sink are coated with a polyester gel-coat. Under normal circumstances, you never even see the glass fibers.
(Resin is the "raw material" of plastic, usually in the form of solid plastic beads or shavings. It is then liquified either by melting or dissolving in a solvent. The liquified resin is then poured or injected into a mold, or it may be sprayed on fiberglass fabric, or the fiberglass fabric may be soaked in the resin and then placed on a mold. When the resin cools (if melted) or cures (if solvent), it hardens and can be removed from the mold.)
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.