Answers

Question

Laurie Wisecup asked:

Dec 5, 2018

What should I use to fill a gap where the metal face of the wood burning fireplace meets?

What should I use to fill a gap where the metal face of the wood burning fireplace meets the other metal below the brick? There is a 3/8" gap. It's too big to just use fire safe caulk. I would like to use something like backer rod, but i know it needs to be fire safe. There is a very cold draft coming through. Thanks!

Drywall & insulation, Insulation

Answer 1

Bob Williams of Star Construction Company, Inc. ^PRO answered:

Dec 17, 2018

The caulking mentioned is fine to seals the gape but you may need somethingto back it other thatn backer rod. in that case you may need a small amount of Rockwool insulation to pack into the void befor applying the caulk. This is a link to the product https://www.rockwool.com/applications/exterior-walls/firestopping/

If you only need a small amount check with a local insulation company to see if they will sell or even give you the smaill quanity you need.