Dry A Roof Leak From Below?

[Oakstone]

Hi there,

I have a new to me 2018 201BHXL. There was a leak in the roof via what looks like a stick poke. I’ve been able to run a dehumidifier inside with my shop vac on blower mode to blast dry air up into the attic and towards the affected wall. Moisture readings went from 98% down to sub 10% everywhere I can measure, which I think is good news.

However, there’s about a 2ft circle that still measures between 60-95% on the roof around the now fixed damage spot. I don’t think my unit has foam in the ceiling and the OSB I can see is the same stuff directly under the roof membrane. Is it possible for me to just keep blasting the dry air into the attic and eventually dry the OSB all the way through from the bottom to the top?

It seems that my alternative is to either remove the trim and attempt to peel back the roof membrane to get more air on it (but it rains outside a lot here and I have no indoor storage option) or perhaps remove the dicor that was put over the hole and make it larger to allow air in (same outside rain issue) then seal it with an eternabond patch.

If I can just keep it up from the inside that’s ideal but it’s my first trailer and I’m inexperienced. Any advice would be awesome!

Pics are of the OSB I can see in my attic and of the rough shape/size of the high moisture meter readings on the roof using my arm as the outer edge.