Ace Auto Glass guarantees its workmanship against water leaks for as long as the customer owns their vehicle. Stress cracks due to installation are guaranteed for up to 90 days from the date of purchase. A customer may receive a free windshield repair on the same windshield as long as the crack is in reparable condition. None of the guarantees are transferable to additional or new owners of the vehicle, however. Experienced, certified experts will repair or replace the glass on all import or domestic vehicles in less than a day – approximately a few hours. Installers are certified by each sealant manufacturer or the National Glass Association for proper product usage and installation, insuring compliance with federal safety standards for collision and rollover retention. Lifetime guarantee on water leakage.