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How do you clean a brick fireplace chimney?

Published in Chimney Cleaning 3 mins read

Cleaning a brick fireplace chimney involves several steps, and one method for removing soot utilizes a paste. The referenced document only details one specific cleaning method for removing soot from the brick, not a complete chimney cleaning process. Therefore, I will provide a comprehensive cleaning process, including the soot removal method described in the reference.

While it's best to hire a professional chimney sweep, you can tackle basic cleaning yourself with the right tools and precautions.

Step-by-Step Guide to Cleaning a Brick Fireplace Chimney

Here's a detailed process for cleaning a brick fireplace chimney:

  1. Safety First:

    • Wear safety glasses, a dust mask, and gloves. Soot is messy and can be harmful to breathe.
    • Protect the surrounding area with drop cloths.
  2. Gather Your Tools:

Tool Purpose
Chimney Sweep Brush Scrubbing the chimney flue
Extension Rods Reaching the entire chimney length
Shop Vacuum Cleaning up loose soot and debris
Drop Cloths Protecting the surrounding area
Duct Tape Sealing around vacuum attachments
Stiff Brush or Scraper Removing stubborn creosote buildup
Spray Bottle For cleaning solutions
Cleaning Solutions Baking soda or cream of tartar paste
  1. Prepare the Fireplace:

    • Seal off the fireplace opening with plastic sheeting and duct tape. This prevents soot from entering your living space. Leave a small opening to insert your vacuum hose.
  2. Start from the Top (If Accessible and Safe):

    • If you can safely access your chimney from the roof, start there.
    • Use the chimney sweep brush and extension rods to scrub the chimney flue from top to bottom.
    • Work in sections, adding rods as you go deeper into the chimney.
  3. Clean from the Fireplace Opening (If Roof Access is Difficult):

    • Insert the chimney sweep brush into the chimney from the fireplace opening.
    • Use extension rods to push the brush upward, cleaning the flue as you go.
    • Again, work in sections, adding rods as needed.
  4. Remove Loose Soot and Debris:

    • Use a shop vacuum to remove loose soot and debris from the firebox and the base of the chimney.
  5. Clean the Firebox Bricks (Soot Removal):

    • Prepare the Cleaning Paste (Referenced Method): To address soot on the bricks of the firebox, create a paste of either baking soda or cream of tartar mixed with a small amount of water.

    • Apply the Paste: Apply the paste to the remaining soot on the bricks and let it sit for 5–10 minutes.

    • Scrub and Rinse: Scrub with a firm toothbrush or small scrub brush and rinse with water.

  6. Inspect and Repeat:

    • Inspect the chimney flue and firebox for any remaining creosote or soot buildup.
    • Repeat the cleaning process as needed.
  7. Final Cleanup:

    • Remove the plastic sheeting and drop cloths.
    • Thoroughly vacuum and clean the fireplace and surrounding area.

Important Considerations:

  • Creosote: Creosote is a highly flammable byproduct of burning wood. Regular chimney cleaning is crucial to prevent chimney fires.
  • Professional Inspection: Have your chimney professionally inspected at least once a year to ensure it is in good working order.
  • Damaged Bricks: Look for cracked or crumbling bricks, as these indicate a more significant problem that requires professional repair.

By following these steps, you can effectively clean your brick fireplace chimney and maintain a safe and efficient heating system.