Sealing, vent covers and general roof stuff

[edman87k5]

Ok, I plan to put eternabond on all my roof seams and have the eternabond, cleaner, roller, etc ready to go. But before I go to climbing, what else do I need to do while up there? Camper has had 2 years of Louisiana sun so far, should I replace the crank up vents? I want to put vent covers on while up there, so again, should I replace the vents first? I am guessing I seal around the vent covers with the eternabond, so once they are there, there is basicly no getting them back off. What do I do if the vent covers need replacing in the future? What else do I need to know before starting this job?
I am a big guy of 6'2" and closing in on 300 pounds so I do not plan on putting my weight on the roof but mostly working from ladders.

[rbarrieau]

I think the new style max air flow vent covers are clamp on. no need to poke holes in the roof.

[edman87k5]

I will have to check on that. What do they clamp to?
Anyone else?

[grhodes50]

Attached is the installation instructions for the MaxxAir II covers.

standard_vent_install.pdf

Hope this helps. &

[rbarrieau]

I could'nt of said it any better.. By the way vent covers are the first upgrade on all my campers , can't camp without them..

[edman87k5]

Ok, thanks for the replies. I was thinking the vent covers mounted to the roof with screws, notthe first time inhave been wrong.

[jimh]

i don't believe i would tape around any of the small sewer and addict vents. if they haven't become brittle yet, they will in another year. i'm assuming urs are plastic.
both the jacks and caps get brittle.