Regular care and maintenance are crucial to getting the longest possible lifespan out of any pool finish. If taken care of properly a marble and quartz plaster pool finish will last 8-12 years. Pebble and polished finishes are the most durable and longest lasting pool finishes available typically seeing 15-20+ year life spans if maintained properly, they also tend to keep their luster through their lifetime. Please follow the National Plasterers Council (NPC) Start up Guidelines available from NPC.