Styrofoam for Fake Rock

RexTheBeardie · Feb 27, 2015

Alright, so I know this has been discussed 400 times, but I can't seem to find a specific answer to my question. I see that a lot of people get their styrofoam from Home Depot, but the only kind that I see says it's treated with a flame retardant chemical.

Is this still safe to use? I imagine it should be, since it'll be buried under the coating and the sealant, but just wanted to double check. Thank you!

Taterbug · Feb 28, 2015

This is the stuff I use (or the lowes equivalent which is blue/green)
http://t.homedepot.com/p/Owens-Corning-FOAMULAR-150-1-in-x-4-ft-x-8-ft-R-5-Tongue-and-Groove-Insulation-Sheathing-68WD/100320355/. I don't see anything about treatments?

RoKa · Jun 1, 2015

I may use Insulation foam stuff as well.
Styrofoam should be okay, are you gonna pay for it? I've read that at some places you can ask for free Styrofoam, not sure if there are different kinds honestly.

We'll be building some hides out of foam ourselves soon but haven't decided on the materials yet. We did get polyacrylic satin sealant already but that's about it. I think with several layers of grout and sealant it should be okay though.

Styrofoam for Fake Rock

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