Last time the 1/4 and the back glass was done was in January 2000. I have notices some slight bubbling and fading. The tint was SunGard and was quality, but has seen its share of the sun I guess. I called the guy that did it last time. He said that SunGard has gone out of business, so any warranties that they had are null. It didn't have a warranty on fade, but it did on adhesive. He offered to remove the old and put on Limo (dark) that would have a lifetime no-fade warranty for $125-150. I called one other place and they would do it for $150, but would charge $60 an hr to remove the old. I'm sticking with the origal guy since I know he did a good job doing it. Not his fault the tint didn't last. Probably will do it next Wednesday.