How to properly seal cracks in a fireplace

Yep! Use expansion foam…NOT!..
What idiots…Wow!

Expansion foam seems to be a univeral fix all!

Wow! right! :roll_eyes:

Another good use of expansion foam. From the ground, it looked like a wasp nest until I saw it from the ladder

I’ve seen it used under footings

Next best thing along side of Duct tape. LOL