Clear snow...how much would you expect to accumulate? If it's made for a 300 lb person to walk on, I don't think you'll need to worry about snow load. We've stored ours outside the past 4 years and have never cleared the snow off the roof...lots of chance to do damage to the roof when clearing.
Hey Dave, do you cover the A/C unit with anything or do you just leave everything uncovered?
We always covered the A/C on our old Mallard with 6 mil poly tied tight around the base of the A/C with twine because the manual said to,also put poly behind the exterior fridge vent and water heater vent.This is the first winter with our Salem and we plan to do the same with it.
2011 Salem 30kqbss
2013 Ram 2500
2005 Ram 2500
1968 Pontiac Le Mans
I put mine down. I've had 24" of snow on the roof with no problems.
__________________ Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.