Replacing fire bricks in your wood burning stove is a necessary maintenance task that helps protect the stove body and improves efficiency.
Fire bricks, also known as refractory bricks, line the inside of your wood stove's firebox. They serve several crucial purposes:
- Protection: They shield the metal body of the stove from the intense heat, preventing warping and extending the stove's lifespan.
- Efficiency: They absorb and radiate heat back into the fire, helping maintain a consistent, hot burn and improving overall efficiency.
- Safety: Damaged bricks can expose the stove body to excessive heat, potentially leading to safety issues.
You should replace fire bricks when they are cracked, crumbling, or have missing pieces large enough to expose the steel behind them. Small hairline cracks are usually acceptable.
Preparing for Replacement
Before you begin, ensure the stove is completely cold. Gather the necessary tools and your new set of fire bricks, which are typically ordered specifically for your stove model.
Essential Tools:
- Gloves
- Safety Glasses
- Vacuum or Brush
- Possibly a Screwdriver or Wrench (for baffle or retainers)
Removing Old Fire Bricks
Removing the old bricks is essentially the reverse of installation. The specific method varies by stove model, but generally involves removing the baffle plate first, then lifting or sliding out the old bricks. Pay attention to the order and orientation as you remove them, as this will help when you install the new set. Clear out any debris or ash from the firebox after removing the old bricks.
Installing New Fire Bricks
Installing the new fire bricks involves placing the "new set" into the firebox. The process is typically done in "reverse order" from how the old bricks were removed. This means you'll start with the first brick removed and end with the last one installed.
Here are the general steps:
- Position the First Bricks: Begin placing the new bricks along the floor and side walls according to your stove model's configuration. They often fit snugly or are held in place by retainers or the baffle.
- Continue Around the Firebox: Work your way around the firebox, fitting each brick into its correct position. Some bricks might require a slight angle to fit past internal components.
- Place the Last Fire Brick: Fit the final fire brick into its designated spot. As mentioned in the reference, this "fire brick. That's right in here," might be the last piece to complete the brick lining before the baffle.
- Replace the Baffle: Once all the bricks are in place, you need to "replace the baffle." The baffle is usually a plate or set of plates above the firebox opening. It helps redirect flue gases and hold the top row of bricks. You might need to lift and angle it to slide it into place. Be aware that replacing the baffle "might get a little bit stuck," requiring a bit of maneuvering to seat it correctly.
- Secure Components: Re-install any retaining clips or hardware that hold the bricks or baffle in place, if applicable to your stove model.
Important Tips
- Handle Gently: While fire bricks are durable, they can chip or break if dropped. Handle them with care.
- Consult Your Manual: Always refer to your stove's owner's manual for specific instructions regarding brick size, shape, and replacement procedures.
- Order Correct Parts: Ensure you order the correct replacement fire brick kit for your specific stove model to guarantee a proper fit.
Final Checks
After installing the new bricks and baffle, double-check that everything is seated correctly and that the baffle is securely in place. Clear any remaining debris before closing the stove door.
Replacing fire bricks is a straightforward task that can significantly prolong the life and efficiency of your wood burning stove.
