We have an Adco Cover with the Tyvek roof for our Sunny. This will be the 5th winter that we've used it and it's still holding up well except for a couple rips from the wind and one zipper. I called Adco customer service and they sent me a patch kit for free to fix the rips. But the zippers remain a problem. They have a tendency not to mesh when you are trying to close them and now the one I use to access the door is broken and I have to use some velcro to close it. I haven't noticed any abnormal wear or anything on the camper exterior. We have had 12"+ of snow on top of it with no issues.
Greg & Joanie - Southern Maryland
2007 Solaris T-276SR -Granola w/Cherry Cabinets
2002 F-150 SuperCrew Lariat 4X4-FX4 5.4L/4.10s
Work sucks, let's go camping!