The 2013 Greyhawks do not have a fiberglass roof. Jayco buys their roof membranes from Alpha Systems. In March of this year, Alpha stopped manufacturing their rubber roofing and instead now produce a vinyl roofing material. Any coaches manufactured after March (or after they ran out of the rubber they had) will have the new roof material. It's not supposed to break down like the rubber did, but is more slippery. It has a golf-ball-like texture to it.
Brian, Mary, kids, beagle - Moose, and mutt - Maggie.
2012 Greyhawk 31FS
2013 Ford Explorer Toad