Its not how much weight the entire roof can take, because that is spread out over the entire roof (what, 35,000 square inches?), what can it take per square inch is the issue. Not only that, but of the 800# it can take, it already has 300# or so before I climb my butt up there. I do put my 240# on a 36 square inch shoe, or 72 square with both feet down, could I damage it. I can tell you I feel the roof flex and certain spots squeak. I try to keep my weight towards the edges, but you can't always do that. One thing that I do is throw a packing blanket up there which at least keeps me from marking up the already mold stained roof material. So far, so good.
Hyper Lite was sold
2017 F-250 4x4 6.2L Gas
I can't fix everything, but I can make it so nobody else can