Ok, after reading about all the goodness of fiberglass doors and how they do not dent or warp, I bought a set of double doors. During our first winter, one of the doors warped - the top edge bends inwards leaving a gap for the cold wind to blow in.
I want people to know that you will NOT get any support from a local company called Classic Openings. The old man was convinced there was something else wrong and was not helpful AT ALL. So I contacted Therma- Tru directly. They sent a professional to check the door and determined that it was indeed a defective door. 8 months later, Thermo-Tru sends a replacement door -- to Classic Openings. These people calls me up, tell me to take off my old door and go into the store to swap out with the new one. They actually suggested I put up a plastic cover. The original doors that I bought were delivered, however for this replacement I need to do all the work.
Basically just want to let folks know:
1) fiberglass doors can warp 2) therma-tru was somewhat supportive 3) Classic Openings in Irving, TX has NO concept of customer support. You are on your own.