How long pool resurfacing lasts in Arizona, and when to plan the next one.

Where these numbers come from

Shasta Pools, a Phoenix builder, gives 7 to 10 years for plaster, 12 to 18 for quartz and 20 to 30 for Pebble Tec, while its figure for pebble finishes in general is 15 to 20+ years. Pebble Tec, the maker, says its finish lasts 20+ years with proper chemistry and maintenance. You will see longer figures on national sites; Arizona's sun, heat and water are why ours are shorter.

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What wears a finish out faster in the Valley

1. Sun and heat. Shasta Pools says intense UV, extreme heat and heavy chemical demand age finishes early, and that heat makes plaster more prone to etching and staining.
2. Hard water. Phoenix tap water ran 10 to 17.6 grains per gallon of hardness (172 to 302 ppm) in the city's 2025 water quality report. As pool water evaporates and you top it off, minerals build up and show as scale, which plaster shows first.
3. Chemistry that drifts. Shasta says erosion happens faster here when water chemistry drifts out of balance. Pebble Tec says balanced pH, alkalinity and calcium levels are essential to a finish's long-term life.
4. Plastering in extreme heat. Shasta says plaster applied above 90 degrees in low humidity can dry too fast to cure properly, which leaves a weaker finish.
5. Light upkeep. Shasta lists twice-daily brushing for a new plaster finish's first month and weekly brushing after that.

Best time of year to resurface

How often should you resurface?

Not on a calendar. Resurface when the surface tells you it is done: rough to the touch, stains that come back after an acid wash, cracks or hollow spots, or water that won't stay balanced. KTAR's Rosie on the House column says a pool 10 years or older may be due, so if you have plaster in that 7 to 10 year range, start watching for the signs. If it's only stains on a smooth surface, an acid wash may buy time.

See all eight signs

Plan the next one ahead

1. Book for cooler months. Fall and winter are the ideal time here, because Arizona's dry heat can crack fresh plaster (Rosie on the House).
2. Compare cost per year, not just price. A $6,000 plaster job that lasts 8 years is about $750 a year; an $11,000 pebble job that lasts 20 years is about $550 a year.
3. Read the warranty. Finish warranties are often shorter than the finish's life, and a claim may need your water chemistry records.
4. Selling soon? Our home sale guide covers how pool repairs fit into an Arizona sale..

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Warranties and records

Keep a simple water log from the day the pool is refilled: date, pH, alkalinity, calcium hardness, chlorine and anything you added. It helps the finish last and supports a warranty claim if you ever need one.

How pool finish warranties work