You mean the stuff to fill drywall? That'* a pretty cool idea.

exactly i filled the rockers a couple of other spots with it yea its called GREAT STUFF in the black can i got pictures around somewhere ill post when i can find them to help you out

do not go overboard with the expanding foam. that stuff has extreme force if used improperly. be careful not to use it in places where it could expand to the point of bending metal and such

Hey, I have a weird idea. Someone kicked off my driver'* side door panel, and now there'* a dent in my door. I'm not considering it, but I just imagined using the foam to get the dent out.

I'm gong to take a picture of the inside. I just got some oil today, so I'm off to engine work before I continue with the interior.

despite what the other guy saidi sprayed the crapout of my rockers and other various cavities the metal dosent expand at all it gets tight but the foam wont cause any bulges or explosions of metal maybe the chemical foam that you mix but not great stuff but uh the dent juries out on that one man i dont see it working for youll mess up alot of stuff if you do thatbest thing for you is a good ol drill bit and puller hopefully it will work

If you do get the expanding foam, be sure to get stuff that does not have any nutritional value to it. You laugh, but think about it...it will be lots of food for bugs. Before you inject foam, spray undercoating and let it cure. This way, any moisture that the foam absorbs will not rust out body panels from the inside out.

I know there is some special foam that is used to fill in voids in exterior parts, like subframes, which cuts down on harmonics and adds a little bit of strength. I read about it some time ago in Sport Compact Car, though the name of the product eludes me.

Since your interior is out, why not just POR15 the entire inside floor area, itll look good and never rust again,

I hosed down the interior with Gunk auto body undercoating after sanding it down with steel wool. It worked very well. I'm considering fiberglassing it, but I think the body needs to flex more safely than it would with fg.