How to Clean Smoke Damage off a Brick Fireplace?
Last updated October 25, 2026
The short answer
Dry Cleaning First
Begin by removing loose soot and dust. Use a vacuum cleaner with a soft brush attachment to gently go over the brick surface. Work from the top down so falling debris does not re-soil clean areas. Do not press hard, as that can grind soot deeper into the porous brick.
After vacuuming, use a dry chemical sponge, also called a soot sponge, to wipe the brick. These sponges lift soot without water, which is important because moisture can turn smoke residue into a sticky film. Cut the sponge into smaller pieces and replace it as it becomes dirty. This step works well on lighter smoke stains.
Wet Cleaning Method
For heavier smoke damage, mix a small amount of mild dish soap or a specialized masonry cleaner with warm water. Dip a stiff nylon brush into the solution and scrub the brick in a circular motion. Work on a small section at a time to prevent the cleaner from drying before you rinse it off.
Rinse each section with a clean, damp cloth or sponge. Change the rinse water frequently to avoid spreading soot back onto the brick. After rinsing, blot the surface with a dry towel. Let the fireplace air out completely before using it again. If the brick is unsealed, test a hidden spot first to ensure the cleaner does not discolor it.
- Use a dry chemical sponge for light soot
- Vacuum with a soft brush attachment first
- Scrub gently with a stiff nylon brush
- Rinse with clean water and change it often
- Dry the brick fully before the next fire
- Test any cleaner on a small hidden area
Cleaning the Mortar Joints
Mortar between bricks is softer and more porous, so it absorbs smoke quickly. Use an old toothbrush or a small stiff brush to scrub the joints carefully. Be gentle, as aggressive scrubbing can wear away the mortar over time. You may need to repeat the cleaning a few times for deep stains.
If the mortar remains discolored after cleaning, it may be permanently stained. In that case, you can repoint the mortar, which means removing the top layer and adding fresh mortar. This is a larger project, so consider hiring a mason or a local water damage pro if you are not comfortable doing it yourself.
Dealing with Lingering Odor
Smoke odor can linger in brick and mortar long after the visible soot is gone. After cleaning, place bowls of white vinegar or baking soda near the fireplace to absorb smells. Leave them for a few days, replacing the vinegar or baking soda as needed. Good airflow helps too, so open a window or use a fan.
If the odor persists, the smoke may have penetrated deep into the brick or the surrounding wall. In that case, a professional cleaning service may use specialized equipment like ozone generators or thermal foggers. These tools are not for home use, so contact a local water damage pro who handles smoke residue.
- Place bowls of vinegar or baking soda nearby
- Open windows or use a fan for airflow
- Repeat cleaning if odor remains
- Seal the brick after cleaning to prevent future stains
- Consider professional help for deep smoke penetration
Preventing Future Smoke Damage
To reduce future smoke buildup, make sure your fireplace damper is fully open before lighting a fire. Burn only seasoned, dry wood, which produces less smoke than green or wet wood. Have your chimney inspected and cleaned regularly by a chimney sweep to prevent creosote buildup.
After the brick is clean and completely dry, you can apply a masonry sealer. This helps repel soot and makes future cleaning easier. Test the sealer on a small area first to confirm it does not change the brick's appearance. If you live in Rockwall, keep this maintenance routine in mind for the humid months.
- Open the damper fully before each fire
- Burn only dry, seasoned wood
- Schedule annual chimney inspections
- Apply a masonry sealer after cleaning
- Clean up soot quickly to avoid deep stains
Water damage does not wait
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Call Now (469) 698-4610Frequently asked questions
Can I use bleach to clean smoke off brick?
Bleach is not recommended for brick. It can lighten the color unevenly and may damage the mortar. Use a mild detergent or a masonry-specific cleaner instead. Always rinse thoroughly and test on a hidden spot first.
What if the smoke stain does not come off?
Some smoke stains penetrate deep into porous brick and cannot be fully removed with home methods. You can try a poultice paste made for masonry, but if that fails, professional cleaning may be needed. A local water damage pro has stronger tools and techniques.
How long should I wait before using the fireplace again?
Wait until the brick and mortar are completely dry, which can take 24 to 48 hours depending on humidity. Using the fireplace while damp can cause steam and re-spread soot. Check by touching the surface; it should feel dry and not cool to the touch.