Well, it could help but it's pretty fragile and brittle stuff to not cover it up. Just about any hit or bump on it could damage it. (It's like popcorn; light and fluffy and real easy to break. It weighs nothing.)
It's like styrofoam peanuts: it could protect against shock. But no, it is definitely NOT puncture proof! It is SO easy to puncture! You could just poke a hole in it with your finger.
Yes, that is what I used it for. On mine it was held in nicely by the terminal bends in the garage door panels and the vertical braces. If you use three pieces per panel you can insert it snugly without breaking the panel while installing it. Cut three panels to fit the door section between braces. Insert the foam pieces in the center of the door panel and slide one piece to the left, one piece to the right and the center piece last to fill in the center and fit snugly between the other two pieces. Repeat the process for the area between the braces on all door sections and the foam will stay in place with no adhesive required.
Thank you, ncJohn. That answers my question completely. I’m now looking at R-Tech R-385 Insulating Sheathing, 1”x4’x8’. Wondering if that would be a more appropriate alternative?
No! This insulation could melt or ignite creating hazardous fumes. I would recommend a material made oc ceramic or heat tolerant fiberglass (not regular wall/ceiling batts) be used.
This foam has no structural rigidity. It would just crumble and break apart.
I would think not. This is insulation that is like the packing that is form fitted around items for shipping. It has no structural strength, either compression or shear.
It measures 14 1/2".