There is no one definitive answer to this question as it can vary depending on the quality of the plaster or liner, the amount of use the pool receives, and other factors. However, a good rule of thumb is to resurface every 7-10 years.

There is no definitive answer to this question as it depends on a variety of factors, such as the material the pool is made from, how often it's used, and the type of algae or other growths that form on the surface. Generally speaking, however, most pools should be resurfaced every 5-10 years.