Brick Replacement in Chicago, IL — Matching a Hundred-Year-Old Wall

Chicago fired an enormous quantity of common brick from local clay, for decades, to build the bungalow belt, the greystones, the two-flats and the storefronts. A century later that turns out to be a considerable piece of luck — because matching is the entire craft of brick replacement, and the city's own salvaged brick is the only thing that truly matches a Chicago wall.

Brick replacement in Chicago, IL is a surgical repair: the units that have genuinely failed come out, matched replacements go in, the surrounding joints get repointed, and the wall carries on. Paul Lally's Masonry has been doing it here since 1988.

Replacement or tuckpointing? The clean test

| Symptom | What failed | The fix | |---|---|---| | Mortar soft, sandy, receding | The joints | Tuckpointing / repointing | | Brick faces flaking, powdering, popping | The bricks — spalling | Replacement | | Bricks cracked through the unit | Unit failure | Replacement + fix the cause | | Cracked brick in a line above an opening | Rusting lintel | Lintel replacement first | | Stair-step crack through joints | Wall movement | Diagnose, then repoint or rebuild | | Bricks that rock by hand | Lost bond | Replacement, often localized rebuild |

Most Chicago jobs are a combination — replace the dead units, repoint the joints around them, because the mortar that let water reach that brick is usually just as tired as the brick was.

Why Chicago brick fails

Water plus cold, on a material that was never especially hard to begin with:

1. Water enters — a failed joint, a leaking gutter, splashback at grade, an uncapped chimney, failed parapet coping.
2. Temperature drops. The water inside expands roughly nine percent.
3. That expansion pushes the hard fired face off the softer core.
4. The face pops. The exposed core absorbs water faster, and the next winter does more.

That's spalling, and the city's soft, porous common brick is more susceptible to it than harder modern units.

Two Chicago-specific accelerants worth naming: film-forming sealers and paint. Both trap moisture inside masonry that survives by breathing, and both are common on older buildings where someone tried to tidy up a facade. See should you paint your brick.

The other frequent cause is rust jacking — a steel lintel over an opening corroding, swelling to several times its thickness, and cracking the brick it carries.

Signs you need brick replacement

• Flaking, powdering, or popped faces — the spalling signature
• Bricks cracked through the unit, not just the joint
• Loose bricks that move under hand pressure
• Missing chunks at corners, sills, and the base of the wall
• A rough, sandy surface where a smooth fired face used to be
• Spalling concentrated at the joint edges — the tell that someone repointed with mortar harder than the brick
• Cracked brick stacked above a window or door — suspect the lintel
• Efflorescence and damp interior walls behind the affected area
• Brick chips and sand on the sidewalk or in the gangway

What waiting costs

Spalled brick has lost its weather-resistant face permanently. It absorbs more water every year, so the damage compounds rather than holding steady — it spreads into neighboring units and the mortar, water reaches the interior, and a scattered handful of replacement bricks becomes a section rebuild.

Brick failure never stays the same size.

Matching: the actual craft

This is where a Chicago brick job is won or lost, and it's mostly not about the brick.

Salvaged first, always. Bricks removed to access a lintel or rebuild a section get cleaned of old mortar and relaid. Original brick is by definition a perfect match — same clay, same kiln, same hundred years of weathering.

Then reclamation stock. Chicago common brick is genuinely available through reclamation yards precisely because so much of it was made. That's a real advantage over most markets, where a discontinued face brick simply can't be matched.

Then the mortar — which is what your eye actually notices. Your eye reads the continuous grid of joints across an elevation, not individual brick tones, so a section where that grid changes color is far more conspicuous than a slightly-off brick. Mortar color comes primarily from the sand, so matching means matching the aggregate, not tinting a standard bag.

Then the joint profile. Tooled to match the existing — concave, weathered, raked, struck, grapevine. A repair tooled to the wrong profile breaks the shadow line and stands out even when the color is perfect.

See why your brick repair doesn't match.

How we replace brick without leaving a patch

1. Diagnose the cause first. Mortar, gutter, grade, sealer, paint, or lintel. Replacing a brick without closing the water path just resets the clock.
2. Assess the brick's hardness and era — this determines the mortar, and on pre-1930s masonry it's the most consequential decision in the job.
3. Match the brick — size, color range, texture, and face. Salvaged units wherever possible.
4. Cut out the failed unit cleanly, by hand and with careful grinding, without cracking neighbors. On soft old brick this is slow work, and speed permanently chips the arrises.
5. Prep the pocket — clean, dampened, ready to take mortar so the new unit genuinely bonds.
6. Set the replacement with full bed and head joints, aligned to the coursing, plumb with the wall face.
7. Match the mortar — soft and lime-rich on historic brick, matched for color, sand, and texture.
8. Tool the joint to match the existing profile.
9. Repoint surrounding joints where they've failed.
10. Clean down gently — never sandblasting, never high pressure — and walk the work with you.

Materials

Salvaged and reclaimed Chicago common brick, matched face brick, and modern units where the wall is later construction. Mortar matched for type, color, sand, and joint profile: soft, lime-rich or low-Portland mixes on pre-1930s brick, standard Type N on later work, Type S only where structure and exposure genuinely call for it.

The rule that governs everything here: mortar must be softer than the brick. On a century-old Chicago wall, a modern high-strength mix stops the joint absorbing movement, so the brick face takes the abuse instead and spalls along every mortar line. A "stronger" repair destroys the wall it was meant to save, and unlike a bad joint it isn't reversible.

What drives the cost

• How many bricks are actually failing — and how many more appear once the area is opened
• Location on the building — ground level versus a second or third story requiring staging
• Access — narrow gangways, shared lot lines, alley-only rear access, street parking restrictions
• Brick matching difficulty and salvage sourcing lead time
• Whether the cause needs fixing too — a rusted lintel, a bad downspout, coping, grade
• Repointing scope around the replacement area
• Undoing previous bad work — hard mortar, paint, or blast damage

There's no meaningful per-brick number. Paul Lally's Masonry gives a free on-site estimate in writing after looking at the actual wall.

Local context: which Chicago wall are you replacing brick in?

Bungalows — roughly 1910–1940. Solid multi-wythe common brick, often face brick on the front and common brick on the sides. Failures cluster on north and west elevations, the bottom courses, at chimney shoulders, and under sills.

Greystones — 1890s–1915. Brick behind an Indiana limestone facade. Brick replacement here usually sits alongside stone restoration, and both want soft mortar.

Two-flats and three-flats — load-bearing masonry with a flat roof and parapet. The worst brick on the building is almost always above the roofline, where the parapet is weathered on both faces.

Storefronts and commercial — wide openings on steel lintels, so cracked brick above an opening is common and the lintel is usually the real repair.

Later construction and veneer — post-1960s infill and rehab, where the wall is a single wythe with a drainage cavity. Mortar droppings must not block the weep holes during a repair. See brick veneer vs. solid masonry.

Across all of them: repeated hard freeze-thaw cycling, wind-driven rain off the lake pushing water horizontally into joints, and de-icing salt attacking everything within a few feet of grade.

Related masonry services in Chicago

Brick replacement rarely stands alone. Chicago work commonly pairs it with tuckpointing and repointing, general brick repair, lintel repair and replacement, parapet wall repair on flat-roofed buildings, chimney repair and rebuilds, limestone and sill repair, foundation masonry repair, and masonry waterproofing. For whole-building scopes, residential or historic masonry restoration.

Worth reading: brick repair vs. replacement, why is my brick spalling, and why masonry repairs fail.

Nearby: brick repair in Chicago, tuckpointing in Chicago, masonry restoration in Chicago, and brick replacement in Oak Lawn.

Talk to a mason who'll match your wall, not just fill it

Paul Lally's Masonry Inc. is a family-owned, insured masonry contractor serving Chicago and the Chicagoland suburbs since 1988 — tuckpointing, brick repair and replacement, chimney repair and rebuilds, lintel replacement, masonry restoration, and waterproofing for residential and commercial properties. Built on Craftsmanship. Backed by Experience.

We'll show you the brick against your wall before we commit to it, and tell you honestly where the match will be close and where it'll be a compromise. Our family name is on every job — which is a decent reason not to leave a patch on the front of your building.

Free on-site estimates — call (708) 448-8866 or request an estimate online.