We are fairly new to CC just getting our Allure in late April. My research (this has been discussed at length on the CC Owners forum on Yahoo) reveals that CC (and other coach manufacturers) got some bad fiberglass from Owens Corning. It seems that some resin in the glass did not cure properly and, when the coaches were exposed to sunlight and heat, gases were released from within the fiberglass causing cracking or checking. It is especially worse on darker painted panels.
Apparently CC (maybe others too, not sure) sued Owens Corning and got a settlement. Many CC owners have been critical of CC because instead of using the settlement money to fix coaches out of warranty, they used the money to shore up the failing company during the economic downturn. CC declared bankruptcy in 2010 I believe.
Someone on the Yahoo forum posted a list by coach model and serial # that shows when CC started using 'better' fiberglass. I think that was in later 2007's and on. I did not know about this before I bought the Allure but, fortunately, our serial # was one of the later units that did not have the defective glass. We have no obvious checking in a 6 year old rig.
I would suggest you focus on trying to find a coach made later in 2007 or beyond or at least check any coach you are considering well. Folks who spend a lot of time in Florida and Arizona apparently had more issues due to the heat.
'07 Country Coach Allure 470 Siskiyou Summit #31578, Cummins ISL 425; 2014 Ford F150 toad; Air Force One Toad Brake.
Glen Allen, VA; Smith Mountain Lake, VA.