Virtually any 5th wheel trailer will have a weight capacity for its roof that will be at least enough for a person of average weight to get up there to do things such as repair or replace a roof vent like the MaxxFan Deluxe Roof Vent # MA00-07500K or to adjust the trailer's roof TV antenna.
I reviewed an online manual for a 2013 model year of StarCraft trailer (older models' manuals are not offered online) and this indicated that the ladders installed are rated for 350-lbs but the weight... view full answer...