All three garage doors cracked in the middle
All three of our garage doors have cracked in the middle on top when we bought the house, which is 11-year old. I noticed 2 of the garage doors have Craftsman 1/3 HP opener, the third one has 1/2 HP Cratsman opener. The previous owner didn't tell us why that happened. Can anyone think of anything that can cause the doors to crack? We are thinking about replacing all the doors. Our concerns are:
1. Will the openers be able to drive any door, or the horsepower kind of limits the weight of door it can drive?
2. Without knowing the cause of cracking, whether new doors will crack again shortly.
3. What should we think about when we shop for new garage doors?
Any suggestions are appreciated. Thanks!