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I have a wood burning fireplace with glass doors. The top outer rim of the doors have quite a gap, allowing a decent draft and also smoke to escape when first starting a fire (which is worsened by a drafty chimney).

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You can see the gap in the second photo is quite large, and leads straight into the fireplace. Is there a way to seal this to prevent the draft and smoke from escaping? I don't think is gets particularly hot in this spot when there is a fire burning since this sticks out from where the fire actually is.

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Stove rope, or fireplace seal.
Self-adhesive or with heat-resistant glue.
Many thicknesses & lengths & usually black, grey or white colour.

Example Amazon search

You can get fire-resistant silicate sealants that can be used like a silicone bath sealant with a gun, but reviews are mixed.

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  • I did see this similar post, but I thought this was for in between the glass panes of the doors. Perhaps I was mistaken!
    – Timothy G.
    Commented Jan 21, 2022 at 18:26
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    If you look at the link, you'll see different types for different purposes - flat tape for doors, circular-section rope for larger gaps.
    – Tetsujin
    Commented Jan 21, 2022 at 18:28
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What about something like Quickrete Fireplace Mortar

Withstands temperatures of 2000˚F (1093˚C)

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