How to seal gaps in foam exo terra background

[Bricen]

Cant find an answer for this. I bought exo terra background panels and i used velcro to stick to the PVC walls. Not working to well, it's a 4' Reptile Habitats enclosure. Thinking caulk dabs or double sided tape?. And will Greatstuff pond and stone work for bug proofing, sealing all the gap and joints? If i cant seal this up it's back to the bare black PVC

 

[ChileanTaco]

I do not have the exoterra background panels, but made something myself. For sealing any gaps wherever they are, I use excavator clay on the front, and on the back of the panel (did so for what you call "bug proofing"), I use aquarium-grade silicone. This also should hold panels to the walls, generally.
(In my case: Glass enclosure, self-made panels/ climbing background that has MDF on the back.)

On the exact materials you mention, I cannot comment as they are not available in my country.

 

[Drache613]

Moved by Moderator from General to Enclosures