Standard white plaster (marcite) typically lasts 8–12 years in the McKinney climate before needing replacement, and it stains relatively easily. PebbleTec is an exposed aggregate finish — actual pebbles set in a matrix — that lasts 20–25 years, resists staining dramatically better, and has a texture that feels better underfoot. The cost difference on a typical McKinney pool is roughly $3,000–$5,000 more than standard plaster, but you get a finish that lasts twice as long and looks far superior. PebbleSheen is a finer-aggregate version with a smoother feel — our most popular upgrade in Craig Ranch and Stonebridge Ranch.