I weigh ~ 230 lbs and while climbing the ladder I was watching for any flexing but I didn't see any. I've been on the roof one or two times and I don't expect to go up there often! We are very happy with ours so far. I've added a couple thousand $ in upgrades to the electrical system, i.e., surge suppression, satellite dome and receiver, cord reel, inverter and permanent voltage/amperage meter to monitor the house batteries. Suspension modifications for better road handling (the MH handled fine but I wanted the enhancements) Blue Ox TruCenter steering assist, Blue Ox TigerTrac on the rear end, and and a no/low cost modification to the Ford chassis that tightens up the overall handling called the "McKinley Cheap Handling Fix" (Google it). Our MH was assembled at the end of the 2012 model year so they gave us some of the 2013 upgrades like roller shades/blackouts and a new lounge dinette without additional charge. It's important to have a good dealer that you can rely on after the sale. I'm located in the Detroit area. I lurked on the forums for a couple of months waiting for my MH to be built so I had the benefit of others experiences when making decision on what to buy to upgrade when I got my MH.