Accent tiling is a great way to save money on tile. For a bold statement, you can finish the pool's underwater sections with paint or plaster.
Retiling is another option to revive your pool. This is the same procedure as indoors. The pool is given a scratch coat, then tiles are laid and grout is placed in between. Tiling can be expensive and time-consuming depending on the size and complexity of your pool. However, it will result in an elegant look.
Vinyl liners never need resurfacing—they are essentially a thick plastic bag housed inside a below-ground structure—but the liners usually need to be replaced after a period of five to nine years.