Signs your Chicago brick needs repair.
The earliest signs a Chicago brick wall needs repair are mortar dust at the base of the wall, hairline cracks above lintels and at corners, white efflorescence after rain, spalled brick face shells on south- and west-facing walls, and stair-step cracks running through mortar joints. Any one is enough to call. Ignored, the wall fails progressively — water in, freeze-thaw, brick loss.
- Licensed
- Bonded
- Insured
- License TGC-098-734
- Est. 2014
- Cause-first diagnosis
What are the earliest signs Chicago brick needs repair?
The earliest signs are visible before the wall starts losing brick. Mortar dust at the base of the wall, hairline cracks above lintels, white efflorescence after rain, spalled face shells on south and west walls, and stair-step cracks running through mortar joints. Any one is enough to call.
- Mortar dust or sand at the base of the wall — the joint is losing material.
- Hairline cracks above lintels and at upper corners — early lintel or settlement movement.
- White efflorescence after rain — water is moving through the wall.
- Spalled face shells on south- and west-facing walls — freeze-thaw is winning.
- Stair-step cracks through mortar joints — structural movement following the weak path.
What is brick spalling and why does it happen?
Brick spalling is the failure mode where the hard face shell of a brick breaks off, exposing the soft interior. It happens when water gets into the brick through a failed mortar joint or missing flashing, freezes, expands, and pops the face. South- and west-facing walls and brick around lintels are the most common spalling locations in Chicago.
Why the cause comes before the brick
You cannot fix spalling by replacing the brick. The next bad winter the same brick will spall again. The repair sequence is always: find the water source (failed mortar joint, missing flashing, clogged downspout, cracked lintel), fix the source, then replace the brick. Brick repair service →
What does a failing mortar joint look like?
A failing mortar joint shows three signs in sequence: visible recession (the joint is set back from the brick face), loss of the tooled profile (the surface is rough or crumbling), and missing mortar (you can see a gap or push a key into the joint). At any stage, water is getting into the wall.
- Recession. The joint sets back ⅛ to ¼ inch behind the brick face. Mortar is weathering faster than it should.
- Profile loss. The original concave or V tooled profile is gone; the surface is rough or sandy.
- Missing mortar. You can see a gap. A key, screwdriver or finger fits into the joint. Water and air run free.
When are cracks structural?
Cracks running diagonally from the upper corners of a window or door — especially wider than a credit card — are usually structural and tied to lintel failure or settlement. Stair-step cracks running through mortar joints across a wall section are also structural. Vertical hairline cracks through the brick itself need an engineer's read.
- Diagonal cracks at window/door corners wider than a credit card — lintel failure or settlement.
- Stair-step cracks crossing a wall section — structural movement.
- Vertical hairline cracks through the brick — needs an engineer's read.
- Bowing wall (visible from a step back) — structural, engineer required.
What happens if I ignore brick repair?
Ignored brick failure compounds. A failed mortar joint lets water into the wall. Water freezes, the brick spalls. Spalled brick lets more water in. The next failure is usually at the steel lintel, which rusts and jacks the brick above. A $1,500 spot tuckpointing scope at year one becomes a $6,000 wall section by year five.
| Year | Likely scope | Likely cost |
|---|---|---|
| Year 1 — first signs | Spot tuckpointing + cause fix | $1,500–$4,500 |
| Year 3 — spalling appears | Wall section repointing + spot brick replacement | $3,000–$8,000 |
| Year 5 — lintel jacking | Lintel replacement + section rebuild | $6,000–$15,000 |
| Year 7+ — structural | Engineer + partial-wall rebuild | $20,000+ |
Ranges. Specific cost depends on access, building stock and Facade Ordinance scope.
How do I inspect my Chicago brick wall?
A five-step homeowner walkthrough: walk the wall in good light, read the mortar joints, read the brick face, read the corners and openings, then note the cause candidates above each failure area. Photograph anything that looks wrong before you call.
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Walk in good light
Start on the south- and west-facing walls in daylight. Stand back 6 to 10 feet so you can see whole brick courses.
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Read the mortar joints
Run your eye along each joint. Look for recession, profile loss and missing mortar.
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Read the brick face
Spalling (face shells broken off), rust streaks (especially below lintels), and white efflorescence after rain.
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Read the corners and openings
Diagonal cracks at the upper corners of every window, door and garage opening. Mortar dust along the base of the wall. Photograph with a coin for scale.
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Note the cause candidates
Look up: gutter or downspout above the failure area? Missing flashing? Note them. The masonry repair always starts with the cause, not the brick.
How much does brick repair cost in Chicago?
Brick repair in Chicago runs $30–$80 per brick for spot replacement, $300–$1,200 per crack for epoxy or stitch repair, $1,500–$6,000 per typical wall section, and $2,500–$12,000 for brick steps and porch rebuilds. Cause-fix work — flashing, downspout, lintel — is priced separately.
Brick repair diagnostic questions.
What are the earliest signs Chicago brick needs repair?
The earliest signs a Chicago brick wall needs repair are mortar dust or sand at the base of the wall, hairline cracks above lintels and at corners, white efflorescence after rain, spalled brick face shells on south- and west-facing walls, and stair-step cracks running through mortar joints. Any one is enough to call.
What is brick spalling and why does it happen?
Brick spalling is the failure mode where the hard face shell of a brick breaks off, exposing the soft interior. It happens when water gets into the brick through a failed mortar joint or missing flashing, freezes, expands, and pops the face. South- and west-facing walls and brick around lintels are the most common spalling locations in Chicago.
What does a failing mortar joint look like?
A failing mortar joint shows three signs in sequence: visible recession (the joint is set back from the brick face), loss of the tooled profile (the surface is rough or crumbling), and missing mortar (you can see a gap or push a key into the joint). At any stage, water is getting into the wall.
When are cracks structural?
Cracks running diagonally from the upper corners of a window or door — especially wider than a credit card — are usually structural and tied to lintel failure or settlement. Stair-step cracks running through mortar joints across a wall section are also structural. Vertical hairline cracks through the brick itself need an engineer's read.
What happens if I ignore brick repair?
Ignored brick failure compounds. A failed mortar joint lets water into the wall. Water freezes, the brick spalls. Spalled brick lets more water in. The next failure is usually at the steel lintel, which rusts and jacks the brick above. A $1,500 spot tuckpointing scope at year one becomes a $6,000 wall section by year five.
How do I inspect my Chicago brick wall?
Walk the wall in good light. Run your eye along each mortar joint looking for recession or crumbling. Look at the brick face for spalling and rust streaks. Check the base of the wall for mortar dust. Look at the upper corners of every window and door for diagonal cracks. Photograph anything that looks wrong before you call.
See one of these signs? Photograph it and call.
One sign on the wall, 48 hours to a written scope. The earlier you call, the smaller the scope.