This afternoon I worked on the tail of my Jetta, and accidentally/on purpose got some resin on the exposed expanding foam currently residing on said tail. I waited for the melting. I was really looking forward to it, quietly hoping that it would only be a little bit so I wouldn't have to do a lot of reworking. Nothing happened. The resin hardened and there was no melting. I was kind of relieved and disappointed at the same time.
For the record, the foam that I have on there now is the kind that comes out of a can that you get at Home Depot, Lowes, or any other hardware supply store.
Pics or it didn't happen.