Fridge fixed but need a no drill repair

[djg]

Well after 14 months with the new TC I finally got the fridge working when driving. I had to put a cover over the roof exhaust to stop the down draft from extinguishing the flame, tried a deflector in front of the exhaust, tried using filters at the bottom intake to stop the draft nothing seemed to work but now this fix worked, after 6 hr drive temps were still at 33 degrees. Now does anyone have a way to attach this cover to the aluminum roof, I don't want to drill holes as I have to plug the roof where the antenna was, it was in the way where the roof vent is and where the new vent cover is on. Does anyone know will JB weld be strong enough to hold down the vent as I have to hinge the vent so I can still have access to the roof vent to clean it. Right now I have the cover, (a max air roof vent cover) screwed to one side of the exhaust and then duck taped the bottom to the camper, (duck tape worlds best quick repair stuff) here are some pics of how I have a temporary fix

[hedge]

Why not take the fridge cover off and install louvers over the screen itself and it would be hidden under the fridge vent cover. Not sure if it would work but in theory...

[Hemi_Joel]

Vulkem 116 will do the job. Just clean the mating surfaces with something that leaves no residue, like the wax and grease remover that is used before painting a car, or lacquer thinner.

[Grit_dog]

If you have a good surface area I'd think some type of epoxy or 3M 5200. Test a little piece on the roofing material and see how well it holds before goobering up the whole vent to find it doesn't work. Then cover the seam if necessary with Dicor. Not for water proofing, rather additional hold down. Maybe dicor would do the whole thing. It looks like it would. Never applied or scraped the stuff off yet though.
Double sided vehicle moulding tape may work well also and much easier. Can get thicker tape if there's some incongruities in the surface. Or even some wide sticky back Velcro.