Over time, the plaster's surface and coating will begin to wear. It must be resurfaced. Depending on where you live, your pool may require this treatment every ten- to twenty years. First, repair any spalling or cracks. Next, prep the whole pool shell. The prep is designed to remove any plaster that has escaped and to roughen the surface to allow new layers of plaster to bond to it. The prep can include sandblasting and chipping as well as chemical surface etching.
Diamond Brite may cost up to $5,000 per project. Pebble Tec or PebbleSheen brands, on the other hand, can run between $9,000 and $13,000 per installation. These high quality aggregates are durable and can be used for many years.
Concrete pools can't withstand wear and tear as well and will need to be replastered quite frequently. A concrete pool resurfacing project typically costs at least $10,000. To keep your pool looking great, seal it with the same finishes.