In-ground pools consist of concrete shells that have been sealed with a Portland cement-based material known as "plaster." This protects and seals the shell. Plaster can often be covered with epoxy, paint, or fiberglass. The plaster can also be used to support tile.
All details regarding your swimming pool and outdoor living space should be completed and documented before this step begins. All grout color or tile must be selected, and should you have any special design ideas or requests, these decisions must be finalized at this point.
We'll answer with a huge "it depends". Pool water chemistry can extend the life of your pool. Commercial property owners and homeowners often leave their pool surfaces unfinished for longer than the time it should be. If your plaster begins to flake, peel off, crack or peel off, you should resurface.
average cost to replaster a pool