Fiberglass: Fiberglass isn't a well-known option for pool resurfacing. Before you decide to go with this option, do your research.
Thin-set is used for bonding the new tile to appropriate substrates during tile installation. The thin-set is not compatible with paint, varnishes, or any other non-porous surface.
Before any steps can be taken, all details about your swimming pool or outdoor living space must be documented. Selection of grout color and tile is essential.