Hi Steve -
A general rule of thumb is if you have a rear ladder you have a walk-on roof. I know CR uses real plywood decking and full roof trusses, so anyone 300 lbs. or under ought to be safe. Becuase I dislike the height on my 5th wheel I crawl around to spread my weight and to ensure when cleaning my roof that I don't slip/slide off the roof!
Remember to remove your shoes, a pebble can pierce your roof material - and the roof gets slippery when wet, be careful!
2013 Jayco Eagle 334RBTS
Crossroads Forum Lurker