Spray foam for travel trailer ceiling and walls?

gbopp wrote:
Here's another option.

The Real Poor Mans Spray Foam.

And, get one of These.

For a small project, it may work well and be cheaper than the DIT kits.

Interesting, I have never seen these in use before. Looks like it would work great on the walls, although using it vertically overhead on my ceiling may be another story.
wonder how many cans of "Great Stuff" it would take!