In "years gone by" a fully walkable roof meant that you could tow your RV to the NASCAR races, climb on top with 6 or 8 of your good friends, hoist up lawn chairs, a cooler and even an umbrella to keep the sun off the party.
Today's RV's simply can't manage that kind of load on the roof, and, as they become lighter and longer, they realistically can't support any "indiscriminate tapdancing". Most, but not all of the light weight RV's will support a "last year's average weight" person who is careful and doesn't walk carelessly on the roof. Bets are off for "tomorrow's growing body habitus" as well as those who consider themselves "pleasingly plump".
I'd think that most of Keystone's RV's will support someone of less than 200 pounds, who is very careful, takes caution to only step on the roof trusses and if he/she needs to kneel to do some work, uses a carpet covered plywood base or a 2" rigid foam board to disperse their weight over a larger area.
Will Keystone tell you that the roof is "walkable"? Probably not, and knowing how easy it is for people to "push the envelope" just a tad bit more, if they did say that it was OK for a 200 pound man to walk carefully on the roof, someone weighing 250 would try it and complain that their roof didn't support them. So, make what you will of the "walkable/not walkable" roof comments in the owner's manual. After all, a step ladder placed beside the RV will allow an owner to access pretty much everything that's on the roof without putting the first foot on the TPO or EPDM.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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