Chimney Masonry Repair
Tuckpointing, Brick & Mortar
Cracked brick, deteriorating mortar, leaning chimney, or visible water damage on the masonry? Chimney masonry repair stops the deterioration before it becomes a structural problem — or a leak that damages your home. Tuckpointing, brick replacement, crown work, and rebuilds across Seattle and the Puget Sound region.
NCSG Member
National Chimney Sweep Guild
Masonry Work We Do
- Tuckpointing & mortar restoration
- Brick replacement & spalling repair
- Chimney crown sealing & rebuild
- Cap installation & spark arrestor
- Waterproofing & sealant application
- Partial & full chimney rebuilds
Some words from our happy customers
325+ five-star reviews across Google, Thumbtack, Yelp & Angi
“Genesis Home Services came out for a brief inspection before providing thorough advice and instructions. Professional, honest, and helpful — I wouldn't think twice about using this company again.”
Jake Hamilton
Google review
“Our built-in wood-burning stove with a 2-story Class A chimney was thoroughly cleaned by Genesis Home Services. He outlined his methodology, findings, and suggestions in detail. Outstanding service.”
Theo Mitchell
Google review
“David did an excellent job doing a clean up and tune up of our very old gas fireplace. He spent time explaining how to best operate and maintain the fireplace. Very knowledgeable and professional.”
Reza B.
Thumbtack review
Signs Your Chimney Masonry Needs Repair
What to look for — most of these progress slowly until they don't
Cracked or recessed mortar joints
Receded more than a quarter-inch or crumbling. Water is getting in.
Loose or shifting bricks
If you can move a brick by hand, the mortar around it is gone.
Spalling brick faces
The face flakes off. The exposed interior then drinks even faster.
White staining (efflorescence)
Powdery white salt left behind as water evaporates out of the brick.
Visible chimney leaning
Pulling away from the house. Get it looked at now.
Water intrusion in the home
Wet spots, ceiling stains, damp firebox. Often traces back to the masonry.
Crumbling or cracked crown
The concrete cap is usually the first thing to go.
Major Scope Work
Partial vs. Full Masonry Rebuild
A rebuild becomes necessary when the masonry damage is too extensive to address with tuckpointing and brick replacement. Two scopes are typical:
- Partial rebuild — typically the upper portion of the chimney above the roofline, where damage is most exposed and concentrated. Preserves the lower structure and reduces scope.
- Full rebuild — when damage runs from the firebox up through the entire chimney, or when the structure is leaning or compromised. The chimney is rebuilt from the firebox course upward with matched materials.
We assess the structural condition during inspection and recommend the smallest scope that fully addresses the problem. We don't recommend rebuilds when targeted repairs would work.
Learn more about chimney rebuilds
Core Masonry Service
Chimney Tuckpointing & Mortar Repair
Tuckpointing — also called repointing — is the most common chimney masonry repair we perform. We remove deteriorated mortar from between the bricks and replace it with fresh, matched mortar that restores the structural integrity and weather seal of the masonry. (Most contractors use the two terms interchangeably — our repointing vs. tuckpointing guide explains the actual difference, including why mortar type matters more than most people realize.)
Why mortar fails first
It's softer than brick on purpose — it takes the movement so the brick doesn't crack.
What tuckpointing does
We grind out the failed mortar and refill with a matched mix.
When tuckpointing isn't enough
If the bricks themselves are spalling or missing, mortar alone won't fix it.
Important: Mortar matching matters. Using a mortar that's harder than the original brick causes the brick to crack instead of the mortar — accelerating damage rather than preventing it. We match mortar mix to the brick type and age.
Brick-Level Repair
Brick Replacement & Spalling Repair
When the bricks themselves are damaged — spalling faces, cracks, or missing material — mortar repair alone won't restore the chimney. We remove damaged bricks individually and replace them with matched or salvaged equivalents, preserving the structural and visual integrity of the chimney.
Spalling is driven by freeze-thaw cycles: water enters the brick, freezes, expands, and forces material outward. Once spalling starts, exposed interior brick absorbs water faster and the damage spreads. Catching spalling early — and addressing the underlying moisture source — prevents progressive structural loss. Our spalling brick chimney guide walks through the three most common Seattle causes and how to tell cosmetic damage from structural.
On Seattle pre-1960 chimneys, we routinely source vintage-matched bricks to maintain the original appearance. For firebox interior repairs, the mortar choice matters as much as the brick — read our guide on refractory mortar vs. regular mortar to understand why the wrong material destroys a repair. For structural cracks and general brickwork beyond the firebox, our Seattle chimney repair team covers the full scope.
Top of Chimney
Chimney Crown Repair
The crown is the sloped concrete cap at the top of the chimney. It directs water away from the flue and the brick courses below — and it's the single most common source of water damage to chimney masonry. Cracks in the crown let water seep down into the brick, accelerating the spalling and mortar deterioration we just covered.
Most crown problems can be resolved with a waterproof crown membrane. Heavily deteriorated crowns need to be removed and rebuilt with new concrete.
Learn more about chimney crown repair
Prevention
Chimney Waterproofing
After tuckpointing or brick replacement, we recommend waterproofing the chimney exterior to protect the work we just completed. We apply a vapor-permeable waterproof sealant that prevents water absorption while still allowing any moisture trapped in the masonry to escape — extending the life of the repair by years.
Why it matters
Our masonry cycles wet and dry constantly. Sealing slows how fast it drinks.
What we use
Breathable, vapor-permeable sealant. Never paint — trapping moisture in is worse.
How long it lasts
Five to ten years. We note the date in your written summary.
Seal the Masonry
Waterproofing After Every Repair
After tuckpointing or masonry work, we apply a vapor-permeable waterproof sealant to protect the repair and extend its life. One visit, lasting protection.
Local Expertise
Why Seattle Chimneys Need More Masonry Work
Pacific Northwest climate is particularly hard on chimney masonry — and we see the patterns across every Seattle neighborhood.
Heavy annual rainfall
Masonry never fully dries between storms.
Freeze-thaw cycle damage
Water gets in, freezes, forces the mortar out. Every winter.
Moisture saturation in older brick
Pre-1960 brick is softer and stays wet longer.
Older brick homes everywhere
Ballard, Queen Anne, Capitol Hill, Beacon Hill, Wallingford, Madison Park.
Moss and biological growth
Roots work into the joints and hold water against the brick.
Salt-air exposure near the Sound
West Seattle, Magnolia, Madrona — metal parts corrode sooner.
Chimney Masonry Repair FAQ
Questions Seattle homeowners ask before scheduling masonry work
Related Chimney Repair Services
Get a Structural Assessment of Your Chimney
Free estimate. Written diagnosis. We tell you exactly what's needed — tuckpointing, brick replacement, crown work, or rebuild — and the smallest scope that fixes it. Serving Seattle and the broader Puget Sound region.
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Last reviewed: May 2026