[DutchmenSport]

I walk on my 3 slide outs all the time. I'm 200 (plus) pounds and never had an issue on the slide outs.

They can hold a lot of snow. If they can hold your weight inside the slide, they can hold the weight on the roof too.

However, ice on the slide out makes it impossible to retract the slides. It's for this very reason when snow and ice is predicted, my slides are always pulled in until the snow and ice stop. Once frozen moisture stops falling from the sky, the slides go back out. It's not because of "weight" I do this.... it's because I want to be able to pull my slides in at any second and not have to chip the ice off first.