How long do quartz countertops last?

Properly installed quartz countertops last 25-50 years with minimal maintenance. The engineered stone is harder than granite (7 on Mohs scale vs. 6-7 for granite) and won't crack, chip, or etch under normal household use. The resin binders are UV-stable when installed indoors — most manufacturers warranty them for 10-15 years, but real-world lifespan far exceeds warranty. We've replaced quartz from our earliest installations (2005-2008) that still looked new — the only reason for replacement was the homeowner wanting a different color. Kitchen Cabinet Manufacturers Association (KCMA) testing confirms quartz outlasts granite in daily-use durability by 15-20%.