We got cracks in both of our windshields on our maiden voyage out of TX. I waited till I got home and called in my Comprehensive on my insurance since they are about $2500 for the pair and the deductible is only $250.
A company called Duncan Systems is who normally gets glass for motor homes and then they coordinate with the mfr. and insurance and a local glass shop that specializes in motor home windshields since a normal auto glass installer doesn't have the training or skill to handle these windshields (at least that is what everyone above mentioned).
I went with Advance Auto Glass for the install since they are local and since Duncan Systems recommended them, as well as a fellow RV friend. I also had Duncan Systems order a new factory windshield gasket and locking strip from Gulfstream since the installers were going to be replacing both and the factory gaskets bond to the coach body was suspect. The installer did have to re-do the job with a new gasket and locking strip due to their prior install error but they covered the cost of materials and labor (about 4-1/2 hours) and so far, so good.
Make sure you go to someone who gives you a lifetime warranty against leaks and on their total installation.
Duncan Systems info. is (800) 551-9149
I dealt with Tracy at ext. 2022
Good luck. Oh, my thread is posted in brief here: