I cut a hole in the wall... now what?

[nachoman]

Just to see if it works...

Stuff some fiberglass insulation on some newspaper and stuff it into the wall all around the opening. Take a can of "Great Stuff" foam or equal and fill the hole the rest of the way up. Let dry, then take a hack saw blade and recut the opening.

Sorry, Gary. I had to laugh at your suggestion when you mentioned "great stuff". I was at Home Depot tonight, and they had a demonstration display for the "Great stuff". It was sprayed into a big mound - looked like a big pile of doggie doo. The 14 year old in me got a great idea of how to play a prank on my nephews. I can't wait until I see them next