how to repair deteriorating mortar in fireplace


Old 08-27-15, 10:03 AM
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how to repair deteriorating mortar in fireplace

The mortar in this old fireplace is missing in some spots and crumbling is other spots. This fireplace is not expected to be used again for a wood burning fireplace.

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I've seen products that come in caulk gun tubes that I believe might be an easy way to fill the gaps in the bricks instead of using conventional mortar, which appears to be what was originally used. So, I'm wondering what alternative solutions are available and whether a product that can be applied with a caulk gun could be a viable option.

An example of caulk-type product:
Old 08-27-15, 10:17 AM
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The mortar type caulk is for cosmetic repairs only! I'd want to use a heat rated mortar to make the repairs in the firebox. You may not intend to burn a fire but as long as the chimney is in place someone else might down the road.

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