To repaint a pool, the plaster must be in good shape. Pros suggest that the plaster surface be prepped with a wash of muriatic acid followed by a rinse with TSP (trisodium phosphate) and water. (Note: Exercise extreme caution when using muriatic acid and TSP and always follow manufacturers’ instructions.) Also, the old paint must be compatible with the new paint. For instance, rubberized latex paint won’t adhere to epoxy and vice versa.
When the thinset is dry, the tiles are grouted. Installing tile is a reasonable DIY project, but in a pool, the substrate plaster must be in perfect condition before you can tile, so you might have to partner up with a professional to rectify any plaster issues.
You can either scrape off some chips and have them tested at your local paint store, or send them to Ramuc. Acrylic pool paints are $50 per gallon and epoxy is $100 or more. One coat should cover 100 square feet with one gallon.
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