I have a bunch of reclaimed (broken) bricks left over from building a patio. The bricks are from an old home that was knocked over and buried for some time. I would like to use these to build a fire pit on the patio, but I've read there can be some safety concerns using bricks/blocks that aren't "fire safe".

My question is, how concerned should I be about using these old bricks? It seems unlikely that they'd blow up to me but I like to keep things as safe as possible.

Are there are any other things I should be concerned about such as mortar type? Base? etc?

Here are the bricks (red ones):

fire pit bricks

  • 1
    Close proximity to fire really requires the use of fire bricks and high heat mortar. I’ve heard of regular bricks right next to a fire exploding, but I’ve never seen it in person Commented Jun 27, 2019 at 22:24
  • 1
    Agreed, random brick are not for fires. Commented Jun 27, 2019 at 22:56
  • 2
    suggestion for future questions: if you have a question about a brick, do not post a picture of a pile of bricks, such as the one you posted, because the picture is useless ... post a closeup of one brick ... that way we can see any markings on the brick .... this suggestion applies to any item that you may be asking about
    – jsotola
    Commented Jun 28, 2019 at 2:40
  • @jsotola fair enough. Was at work and didn't happen to have a close up of the bricks.
    – Andrew
    Commented Jun 28, 2019 at 14:09

1 Answer 1


You can build the basic structure with these bricks, then line the fire pit itself with fire bricks. That's how fireplaces are made.

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