How strong is the roof ?

[Laco]

With our 41 foot DP I never worried about it, it was a solid sheet of fiberglass and was very solid. With the Gemini and the TPO roof it was a different story, not nearly as robust, and though I no longer got up on the roof, workers would when it was washed and waxed. Got comments ranging from, its ok, to got to be very careful up there.

[MLP]

If it is not rotted, then it should hold you so long as you do not jump on it! That being said, RV ladders are not designed for your weight. Even a lot of standard ladders are not. So make sure you have a very good ladder designed for your weight.