I am trying to sell my trailer and someone that came to look at it told me the roof was totally gone.
My opinion (for what it's worth) is there are two possibilities....given no signs of leaks on the ceiling.
1. They don't know what the )@#*$ they're talking about.
2. They were trying to snow you into drastically cutting the price.
The roof is made by wrapping the rubber membrane around basically a heavy cardboard then attaching it to the rafters. If you step on it off the rafters you will put your foot through it!! Between the rafters it is very soft. Most people take a piece of plywood that is big enough to span at least two rafters preferably three and cover it with carpet to use for getting on the roof.
PS: there were options for a 1/2 plywood or a full plywood roof, but they were special order.
2004 Dodge Ram 2500 Club Cab 4x4 CTD
2007 Sunline Solaris T-276-SR: Misty Blue/Cherry
2001 Dodge Ram 1500 Reg Cab 4x4 OFF-ROAD