The Chicago Homeowner's Masonry Maintenance Checklist

Brick is one of the most durable things you can wrap a house in — but it is low-maintenance, not no-maintenance. The single most useful habit a Chicago homeowner can build is a once-a-year look at six things: the mortar joints, the brick faces, the chimney, the steel lintels over the windows, the foundation at grade, and how water drains away from the walls. Catch a crumbling joint or a cracked chimney crown early and it is a small repair; miss it for a few freeze-thaw winters and the same spot can turn into a rebuild. Paul Lally's Masonry has maintained and restored Chicagoland brick since 1988, and this is the checklist we wish every homeowner ran each year. Free on-site inspections: (708) 448-8866.

Why masonry maintenance matters more in Chicago

Masonry fails for one reason above all others: water. A brick wall is designed to shed water and let the little that gets in dry back out. The mortar joints, the chimney crown, the caulking, and the flashing are all part of that water-management system. When any of them fail, water gets into the wall and stays there.

Then our winters go to work. Freeze-thaw is the defining force on Chicago masonry: water seeps into a hairline crack or an open joint, freezes overnight, expands, and pries the masonry apart a fraction of a millimeter. Thaw, refreeze, repeat — dozens of times a winter. That is how a sound wall becomes a wall with spalling brick, crumbling mortar joints, and bowing over time. Add lake-effect moisture and the fact that so much of the region's housing stock — bungalows, greystones, two-flats, century-old brick homes — is a long time past its original mortar, and you have a climate that rewards homeowners who pay attention and punishes those who don't.

The good news: almost everything on this list is cheap and simple to fix early. The whole point of maintenance is to keep small problems small.

The masonry maintenance checklist

Walk the perimeter of your house slowly, ideally on a bright day, and look at each of these. You are not trying to diagnose the repair — just to notice change.

1. The mortar joints

The mortar between the bricks is the part that fails first, because it is softer than the brick by design. Look for:

• Receding joints — mortar that has worn back below the face of the brick, leaving a little ledge that catches water.
• Crumbling or sandy mortar — if you can scratch it out with a key or a screwdriver, it has lost its bind.
• Hairline gaps where the mortar has separated from the edge of the brick.
• Missing chunks of mortar, especially on the south and west walls that take the most weather.

Failing joints are the number-one reason a wall needs tuckpointing (grinding out the old mortar and packing in fresh, color- and type-matched mortar). Caught early, it is a clean, straightforward repair.

2. The brick faces

Now look at the bricks themselves:

• Spalling — faces that are flaking, popping, or crumbling off. This is freeze-thaw damage and it means water has been getting in.
• Cracked bricks — single cracked units, or a step crack that climbs diagonally through the joints (a sign of movement, not just weathering).
• Loose bricks you can wiggle, especially near the ground, around openings, or at corners.
• White staining (efflorescence) — chalky salt deposits that signal water is moving through the wall.

A few spalled or cracked bricks can be cut out and replaced with matched units. Left alone, the exposed face lets water in faster and the damage spreads.

3. The chimney

The chimney is the most exposed masonry on the house — weather on all four sides, a flat crown that collects rain and snow, and a seam through the roof. From the ground (binoculars help), check the:

• Crown — the slab at the very top. Cracks here are a leading cause of leaks.
• Brick and joints above the roofline, where masonry fails first.
• Flashing — the metal seam where the chimney meets the roof; look for rust or lifting.
• Cap — is it there and intact?
• Lean — any tilt or a gap opening between the chimney and the house is a safety issue.

Inside, water stains on the ceiling near the chimney are often the first clue. Most chimney leaks come from the crown, flashing, joints, or a missing cap — not the flue.

4. The lintels over your windows and doors

Above most windows and doors in a brick home is a steel lintel — an angle iron carrying the brick across the opening. In our climate that steel rusts, and rusting steel expands with tremendous force ("rust jacking"), lifting and cracking the brick above it. Look for:

• Rust streaks bleeding down from above a window or door.
• A horizontal crack running along the brick course just above the opening.
• Sagging or stepped brick over the window.

A rusted lintel needs to be replaced and the brick above it rebuilt — a common repair that gets much bigger if ignored.

5. The foundation and the grade line

Look low, where the wall meets the ground:

• Step cracks near the foundation that are widening over time.
• Efflorescence or damp staining near grade.
• Soil or mulch piled against the brick, or grade that slopes toward the house.

Movement cracks are different from surface weathering and deserve a professional eye.

6. Caulking, sealant, and water management

Finally, the supporting cast that keeps water out:

• Caulking and sealant joints around windows, doors, and where dissimilar materials meet — cracked or peeling sealant lets water in.
• Gutters and downspouts — clogged gutters dump water down the wall; downspouts should carry it well away from the foundation.
• Grading — the ground should slope away from the house.
• Existing sealer — if your brick was sealed, breathable sealers wear and may need renewing (never seal over failing joints, and never with a non-breathable coating).

Quick reference

Area	What to look for	What it usually means
Mortar joints	Receding, sandy, crumbling, gaps	Time to plan tuckpointing
Brick faces	Spalling, cracks, loose, white staining	Brick repair/replacement; water is getting in
Chimney	Cracked crown, rust, missing cap, lean	Crown/flashing/tuckpointing or rebuild
Lintels	Rust streaks, crack above window, sag	Lintel replacement + rebuild above
Foundation/grade	Widening step cracks, damp, efflorescence	Movement vs. weathering — get it checked
Caulk & water	Cracked sealant, clogged gutters, bad grade	Reseal and redirect water away from walls

A simple yearly routine

You do not need to do this often — twice a year is plenty:

1. Spring: after the winter, walk the house and look for new spalling, fresh cracks, or joints that opened up over the cold months. Spring is the best time to schedule any repairs the winter revealed, because mortar cures properly in mild weather.
2. Fall: before winter, clear the gutters, check the downspouts and grade, look at the chimney crown and flashing, and seal up any obvious gaps so water can't get in and freeze.

Take a few photos each time from the same spots. Year over year, the photos make change obvious — a joint that's opening, a crack that's growing — long before it becomes urgent.

What you can do yourself — and what needs a mason

The inspection and the water management are genuinely DIY: keep gutters clear, aim downspouts away from the walls, keep soil and mulch off the brick, and watch for change. Those simple habits prevent a surprising amount of masonry damage.

The repairs are not DIY. Tuckpointing with the wrong mortar — too hard, the wrong color, the wrong type — can damage the brick and look worse than the problem. Brick matching, chimney work, and lintel replacement all take a mason's eye and the right materials. The honest line is: inspect it yourself, but call a professional the moment you see active failure.

Why catching it early costs less

We never publish flat prices, because every home is different — but the principle is simple and worth understanding. What drives masonry cost is scope (how much wall is affected), height and access (ground-floor joints versus a chimney that needs roof setup and scaffolding), extent of damage (a few joints versus a wall that's let water in for years), and matching (sourcing brick and mortar for an older home). Every one of those grows the longer a problem sits. A section of tuckpointing today is a fraction of the work of rebuilding a wall that's been quietly taking on water for a decade. The only honest number is a free on-site estimate — (708) 448-8866.

Chicago's housing stock: why these homes earn their keep

Much of Chicagoland is brick for a reason — it has held up for a hundred years. But the bungalows of the Bungalow Belt, the greystones and two-flats of the city, and the century-old brick homes across the southwest suburbs are all long past their original mortar's lifespan. Soft, historic mortar and a century of freeze-thaw mean these homes reward a little yearly attention enormously. Maintained, they easily outlast their owners. Neglected, they reach the rebuild stage one wall at a time.

Paul Lally's Masonry is a family-owned, licensed and 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. Free on-site estimates — call (708) 448-8866.

Related services

• Tuckpointing and repointing — the repair most mortar-joint problems need.
• Chimney repair and rebuilds — crowns, flashing, caps, and above-the-roofline rebuilds.
• Masonry waterproofing and sealing — breathable protection once the joints are sound.
• Lintel repair and replacement — for rusted steel and cracked brick over windows.
• Brick repair — cutting out and matching spalled or cracked brick.

The bottom line

Masonry maintenance is mostly about paying attention. Run this checklist once or twice a year, keep water moving away from your walls, and call a mason the moment you see active failure — crumbling joints, spalling brick, a cracked chimney crown, rust over a window, a widening step crack. Do that, and your brick will do what it was built to do: outlast all of us. When you want a second set of eyes, Paul Lally's Masonry gives honest, no-pressure inspections. Call (708) 448-8866 or request a free estimate.