How to Replace a Fire Brick

Updated February 21, 2017

Wood-burning stoves use fire brick to insulate and distribute heat evenly. The floor and the interior walls of stoves are completely lined with these special bricks. Occasionally the bricks crack or break, will not stay in place and need to be replaced. Most fire bricks are the same size and can be found in most home improvement stores. They are easy to replace.

Purchase a standard firebrick.

Clean the ashes out of the stove. Find the broken brick.

Grab the firebrick with your fingers and try to pull it out. If it won't budge, use the tip of a screwdriver to pry it up and then grab it. Take out any residual pieces as well and discard them.

Use a small brush to brush out any ashes from the recessed area where the brick came out.

Place the new firebrick into place with your fingers. If it will not fit, gently tap on it with a small block of wood until it fits flush.


Lay a dust sheet in front of your stove when removing the ashes. If the firebrick is on the side, or vertically stacked, they are held in place by gravity. These bricks can be rearranged. Just let the remaining bricks fall into place where the damaged brick came out, and place the new brick on top.


Don't tap on the brick with a hammer. It might break the brick.

Things You'll Need

  • Firebrick
  • Screwdriver
  • Small brush
  • Small block of wood
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About the Author

Specializing in hardwood furniture, trim carpentry, cabinets, home improvement and architectural millwork, Wade Shaddy has worked in homebuilding since 1972. Shaddy has also worked as a newspaper reporter and writer, and as a contributing writer for Bicycling Magazine. Shaddy began publishing in various magazines in 1992, and published a novel, “Dark Canyon,” in 2008.