WTH! Doing a search for "expanding FOAM" you will find that it doesn't do much but improve your already excellent chances of rust.
BTW, from one Canadian to another, you're making our educational system look pretty bad, and it's not. When your posting, if you look in the upper right corner of the box you'll see a little "abc" and a check mark. That stands for a newfangled thing called "spell check" that I'm sure you might find helpful.
