What to do with foam in rear quarters?, getting rid of seam sealer Options

[amfab]

So this past weekend I was using a little torch to heat up—and more than occasionally set on fire—the seam sealer so I could scrape off the big globs of it all over the car. I came to realize that the foam people speak of in the rear corner of the car is just put in there and covered with seam sealer.
How do the cool kids deal with this area when restoring?

Thanks

-Andrew

[914dave]

I used great stuff foam to replace the original. If you don’t reapply the foam, that area created a little shelf where mud and dirt will accumulate. If you don’t reapply it just clean the area about occasionally.

[bbrock]

I used great stuff foam to replace the original. If you don’t reapply the foam, that area created a little shelf where mud and dirt will accumulate. If you don’t reapply it just clean the area about occasionally.

This is my concern. I have 3 miles of gravel road to drive before hitting any pavement. I'm thinking caked mud is going to cause rust faster than the foam with good body sealer over it. There is a special body foam you can buy. After digging the foam out (wish I'd known the carb cleaner trick), I shot epoxy primer and then Raptor bed liner into the cavities. It is still a dirt trap though so I'm probably going to fill with body foam and sealer and just add checking the condition of the sealer to my maintenance routine.