How to properly seal cracks in a fireplace

[rlewis5 (Roy Lewis, CERTIFIED MASTER INSPECTOR RETIRED)]

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

[jdepiero (Joseph DePiero, CMI OH 2019004114)]

Expansion foam seems to be a univeral fix all!

[lkage (Larry Kage, CMI)]

@rlewis5

Yep! Use expansion foam…NOT!..

Wow!..is right!

[jdepiero (Joseph DePiero, CMI OH 2019004114)]

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

[ddivito (Dennis DiVito, VA License # 3380 000170 NRS)]

I’ve seen it used under footings

[mcyr (Marcel Cyr, CMI)]

Next best thing along side of Duct tape. LOL