While it is commonly used to make pools, fiberglass can also be used as a resurfacer for concrete structures. Theoretically speaking, fiberglass should outperform plaster. It is waterproof, can withstand stains, and has a very smooth texture.
When setting new tile, thin-set is used as a bonding agent to ensure that the new tile can be adhered to any suitable substrate. Keep in mind that thin-set won’t adhere well to paint, non-porous surfaces, or coatings.
An expert professional will either chip the plaster or sandblast it out leaving the original concrete shell. The bond coat, which is usually one to two coats in color, is then applied.
sider crete pool plaster