FoamBoard Walls

So just casually strolling the dollar store grabbing a poster for school when I found this foam board (Readi-Board is the name) for a dollar. I picked up two thinking I’d use them as walls for a tank. I’m setting up for a BP I’m hoping to get soon for a show in a few weeks. I just have a few question if anyone has attempted it. I know some people use spray-foam insulator (I think) to make Hides and custom backgrounds.
1.) Is this safe for the BP?
2.) Is there anything I need to specifically worry about when doing this? (Water, heat, etc)
3.) Opinions on substitutes that could be a better use than this. (Relatively cheap)

In addition to this, Who anyone use spray-foam to make custom hides for a BP? I just like to make things myself, makes the experience feel better personally.

Thanks in advance.

Not for use inside an enclosure. It’s just cheap foam with paper on both sides. Will become compromised as soon as it gets wet.


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Thanks, I realized after I cut it when some paper ripped of. I’ll be looking into some other stuff.