How To Build Exterior Masonry Fireplace?

Choose the location with safety in mind. Your patio fireplace should be located at least 10 feet away from structures and flammable materials. When this is not possible, such as in the case of a patio with a wood cover or a mature tree growing nearby, you will need to take additional precautions to reduce fire risks.

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A masonry fireplace consists of a brick or stone firebox, a brick or stone chimney, and, more often than not, a wood mantel. It’s a lot easier learning how to build a fireplace like this in new construction.

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On the exterior, the chimney is brick and the wall is veneered with brick. In all, this fireplace required 75 firebrick for the firebox, about 600 brick for the backup walls and throat, 700 brick for the shell and 1,100 brick for the chimney. There are 12 steps to the fireplace: The foundation.

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You will want to use a steel angle iron to carry the weight of the masonry over the firebox. Also, place galvanized wall ties in the joints between the block because its way easier than drilling holes and attaching them later. As you step each row of brick in over the firebox, build masonry above it to counter the weight of the overhang.


  1. Step 1: Create a Design. Use tape measure to determine width, length, depth and height of fireplace. …
  2. Step 2: Create a Concrete Foundation. …
  3. Step 3: Lay Concrete. …
  4. Step 4: Build a Façade Frame. …
  5. Step 5: Attach Cement Board. …
  6. Step 6: Add Mortar. …
  7. Step 7: Install Stacked Stone. …
  8. Step 8: Attach Chimney Cap.

Build a Fireplace, Brick by Brick

FireRock Pre Engineered Masonry Fireplace

how to build an outdoor fireplace

Frequently Asked Questions

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1:022:51How To Build an Outdoor Fireplace – DIY Network – YouTubeYouTubeStart of suggested clipEnd of suggested clipFor larger structures it’s best to hire a stonemason to be sure your fireplace won’t collapse. OnceMoreFor larger structures it’s best to hire a stonemason to be sure your fireplace won’t collapse. Once the cinder blocks are in place and allow to set overnight. You can start adding a stone veneer.

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An outdoor fireplace will cost anywhere between $1,500 to $20,000. On average, it will run you about $3,000 to have a fireplace built. Pre-made kits and unfinished contractor models usually only run from $1,500 to $9,000. Custom projects typically cost between $8,000 to $20,000 – some even hitting $50,000.

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All fireplaces must be constructed of heat-safe materials, which usually mean brick, block, concrete, or stone for the exterior. … The firebox (where the flames actually burn) must be constructed from steel or fire-rated bricks that will withstand extreme heat.

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10 feet

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