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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!
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.

Dec 6, 2018

I agree with Jared. You will need a high temp sealant.

Dec 6, 2018

Good Morning,

Nice space.  Its hard to tell from the photos just how big the space needing to be filled is however 

Dap 18854 High Heat Mortar Raw Building Material, Black

should work well. It can likey be found at you local hardware store of online

https://www.amazon.com/18854-Mortar-Building-Material-Black/dp/B0006MXS4C/ref=asc_df_B0006MXS4C/?tag=hyprod-20&linkCode=df0&hvadid=167127061369&hvpos=1o5&hvnetw=g&hvrand=16226564078373131268&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9032160&hvtargid=pla-307130896304&psc=1

Best of luck and Happy Holidays

Jared

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