Two questions for the community

[rbdudeman@]

Community thoughts...I'm working on finishing my utility topper. Two items: 1) does anyone have experience with adding a smaller vent fan on their rooftop of the shell. I've done searches and I haven't come up with a good option. Most are either too big(standard rv style) or too small (usually marine style).
2) insulation: I want to add the 1" foam insulation but I don't want a permanant gluing/taping. Looking for options for attaching the foam. Any thoughts/experiences would be most helpful.

 

[llamalander]

MaxxAir makes a 6" round manual pop-up fan that claims to move 900 c.f.m.... which should empty any camper in no time.

MaxxAir 00-03810W MaxxFan Dome Roof Vent With LEDs - 12V Fan - Manual Lift - White

The MaxxAir MaxxFan is a compact dome roof vent that allows you to ventilate small rooms in your RV or camper, such as your bathroom or shower. Designed for rooftop or sidewall installation.

www.rvupgradestore.com

For insulation, hot-glue might work and is removable, unlikely to damage the foam like some solvent glues.
Depending on how tight the mechanical fit is, it may be enough to keep it in place. Cheap enough to experiment with.