Technistone Quartz Countertops installed in residential applications have a 10 year warranty from the date of installation. This warranty guarantees Technistone countertops to be free from any manufacturing defects during this period. All warranty claims must be inspected and approved for warranty by an authorized Technistone representative to insure installation is in compliance with Technistone USA Inc.’s fabrication and installation specifications. Damage caused by negligence, physical or chemical abuse, and / or extreme heat is not covered under this warranty.