I saw a rear window decal on a customers vehicle actually split or crack where every heat element was. This decal was done at another shop, and had been on for a year or so. When we did the new decal, we used a premium vinyl and it didn't seem to do the same thing. In fact, it was on the car for at least 3 years and still looked as good as the day we put it on. She sold the car..so I don't know how it performed after the 3 years...but from experience...I'm sure it would have lasted another 2 or more without problems.