Concrete sidewalks fail in pieces, not all at once. One slab settles. Another spalls along the edge. A third cracks at a joint. Boston Concrete inspects the entire walk, identifies which sections can be lifted, which can be patched, and which must be replaced. You pay only for what actually needs fixing, not a full tear-out. Free assessment, written quote.
Replacing an entire sidewalk when only two sections are broken is wasteful. Repair focuses on the actual problem: a settled slab that can be lifted back to grade, a spalled edge that can be patched with matching mortar, or a cracked section that needs to be cut out and re-poured to match the rest.
We do not recommend repair when the whole slab is compromised. If the base has failed everywhere, the joints are failing in multiple places, or the concrete itself is thin and deteriorating across the entire walk, a new concrete sidewalk is the honest answer, not a series of repairs that will fail one after another.
The same logic applies to our patio repair work and driveway repair services. We assess what is actually broken and fix only that, which saves homeowners real money compared to full replacement quotes.
Recent work
The repair process
How We Repair Sidewalks in Boston
Inspect every joint
We walk the entire sidewalk with you, identify each failure point (settlement, cracking, spalling, joint separation), and mark which sections are candidates for lifting, patching, or replacement.
Lift settled sections
Slabs that have settled but remain structurally sound are lifted back to grade using slab-jacking, where material is injected underneath to raise the concrete back to proper elevation.
Patch or replace
Surface spalling and minor edge damage get patched with a repair mortar that bonds and matches color. Sections that are cracked through or have failed bases are cut out and re-poured to match the surrounding walk.
Seal and cure
All joints are cleaned and sealed to direct water away from the repair. The new concrete is protected during cure, and the sidewalk is returned to service in working condition.
Repair boundaries
When Sidewalk Repair Is Not the Answer
Repair works when failures are isolated, the rest of the concrete is sound, and the base underneath can be corrected. It fails when the entire sidewalk is past saving, when fixing one section will lead to fixing the next section six months later because the underlying problem is systemic.
We tell you this honestly on every call. If the base has failed everywhere, if the slab is too thin, or if the joints are failing across the whole walk, the quote will recommend full sidewalk replacement instead of chasing repairs. For walks with only color or sealer issues, see our decorative sidewalk options.
Lifting settled slabs, patching spalled edges, sectional replacement and when repair stops making sense.
We assess each section against three questions, is the slab structurally sound, is the base under it correctable, and is the failure isolated. If yes to all three, repair works. If no to any, that section needs sectional replacement or the whole walk needs to come out.
Often, yes. Slab-jacking can raise a settled but otherwise sound section by injecting material underneath to lift it back to grade. Where the slab is cracked along with the settlement, sectional replacement is the better call.
Sectional replacements match the surrounding slab in finish and elevation; patches match in color and texture as closely as possible but a careful eye can sometimes see the repair line. We tell you that up front so the expectation is realistic.
Done correctly, sectional replacements last as long as the surrounding walk; lifted slabs last as long as the base correction holds; patched edges last as long as the bond holds. Each repair has a realistic lifespan; we share it in the quote.
Most walkway repair visits are a few hours to a day; sectional replacements that include cure time stretch over a couple of days. The full schedule is in the written quote so you know what to plan around.
Homeowner reviews
What Boston Homeowners Say About Their Sidewalk Repairs
They quoted three options, full replacement, sectional replacement on the two bad bits, or slab-jacking and a patch. We chose the middle one, half the cost, walk is solid two seasons in.
W. X.
Boston
★★★★★
One corner had settled badly. Lifted back to grade, joint sealed, no replacement needed. Less money than I expected and the walk looks right again.
Q. Z.
Cambridge
★★★★★
Honest assessment that two sections were past repair and the rest were fine. Replaced only those, matched perfectly. Real money saved versus the replacement quote from the other guys.
Y. Z.
Somerville
★★★★★
Spalled edge along the road-salt side got patched with a matching mortar. Bond has held, the patch is barely visible now. Worth doing instead of replacing the whole section.
X. Y.
Quincy
From the blog
Concrete Guides & Articles
Practical reading on planning, finishes and caring for concrete in Boston.
Tell us where the sidewalk is failing, settlement, cracks, spalling, joint issues, and we will assess it free and provide repair options in a written quote.
