Cracked walls, bowing foundations, settlement, water in the basement, brownstone basement lowering. Engineered repairs — crack injection and carbon straps, wall anchors, piers, mass-pour underpinning, waterproofing — filed, inspected, and self-performed by JBS crews from Queens to Brooklyn.
JBS Concrete Pros repairs residential foundations across New York City — Queens, Brooklyn, the Bronx, Manhattan, Staten Island and Long Island — from its yard at 91-01 120th Street, Richmond Hill, NY 11418. Methods are matched to the failure: crack injection and carbon-fiber straps for cracked walls, steel wall anchors for bowing walls, piers for settlement, and mass-pour or pile underpinning for basement lowering and major stabilization. Structural work is engineer-designed, DOB-permitted and inspected. Free inspection: (718) 849-2500.
| Crack type | Usually means | Typical fix |
|---|---|---|
| Hairline, vertical | Concrete shrinkage as it cured — usually cosmetic | Monitor; seal or inject if it leaks |
| Wider vertical or diagonal | Settlement at one end of the wall | Injection; piers if the footing is still moving |
| Stair-step (block or brick) | Differential settlement or lateral pressure | Carbon straps or anchors; piers for settlement |
| Horizontal | Soil and water pressure pushing the wall in | Wall anchors or bracing, plus drainage |
| Wall bowing inward | Advanced lateral failure | Anchors, bracing or rebuild — engineered |
This is a guide, not a diagnosis. An inspection measures the crack, checks whether it is moving, and finds the cause before anyone quotes a fix.
Epoxy or polyurethane injection seals and bonds cracked walls; epoxied carbon-fiber straps lock cracked or slightly bowed walls against further movement. Typically 1–2 days.
Steel wall anchors or interior bracing for walls bowing beyond what straps can hold — stops the movement and retains the wall line.
Concrete or steel push piers installed beneath settling footings carry the load down to competent soil and stop differential settlement. Type and depth are set by the engineer.
Mass concrete or pile underpinning in engineered sequence — the standard for brownstone cellar dig-downs and for protecting a building next to new excavation. DOB filed and inspected.
Exterior membranes, interior French drains, sump systems. We stop water at the source, not just where it shows, and waterproof every repaired section so the wall is opened once.
Temporary structural support during repairs, renovations, and adjacent construction — designed and installed to code.
Detached and attached homes with poured or block foundations — foundation crack repair, settlement repair and basement waterproofing in Queens. Our home borough, closest to the Richmond Hill yard.
Brownstones and rowhouses — basement lowering, underpinning, party-wall protection, foundation crack repair and basement waterproofing in Brooklyn.
Sloped-lot foundations and retaining walls in the Bronx, plus Manhattan, Staten Island and Long Island.
Hairline vertical shrinkage cracks are common and usually cosmetic. Horizontal cracks, stair-step cracks in block walls, walls bowing inward, doors and windows going out of square, or water entering at the wall-floor joint are structural warning signs that deserve an inspection. JBS inspects for free and tells you honestly which category you are in.
Yes. JBS Concrete Pros is based at 91-01 120th Street in Richmond Hill, Queens, and repairs foundations across Queens, Brooklyn, the Bronx, Manhattan, Staten Island and Long Island. Queens and Brooklyn jobs are closest to our yard.
Underpinning extends a foundation deeper, by pouring mass concrete or installing piles beneath the existing footing, either to stabilize a settling structure or to lower a basement for more headroom. In NYC it is engineered, DOB-filed, inspected work, and it is the standard method for brownstone basement lowering in Brooklyn.
Structural work such as underpinning, piers, wall anchors and basement lowering is designed by a licensed engineer, filed with the NYC Department of Buildings and inspected. Cosmetic crack sealing usually is not. We tell you which applies at the inspection, and for permitted work JBS coordinates the engineer and files the permits.
A push pier is a steel pipe pier driven beneath a settling footing down to load-bearing soil, then used to transfer the building's weight onto that deeper layer. Piers and piles are used where the soil under the existing footing cannot carry the load. The engineer specifies the type and depth for each job.
Yes. Depending on the source we install exterior membrane waterproofing, interior French drains to a sump pump, or both. During foundation repairs we waterproof the repaired sections as standard practice so the wall is not opened twice.
Carbon-strap crack reinforcement is typically 1–2 days. Wall anchors and piers run several days to a week. Full underpinning and basement lowering is a multi-week engineered project. Every quote includes a written schedule.
It depends on the failure and the fix: sealing a single crack costs far less than underpinning a wall. JBS inspects for free and delivers an itemized written estimate, typically within 48 hours of the site visit. Call (718) 849-2500.
Free estimates within 48 hours for concrete and contracting. Same-day dumpster delivery when you call before noon, Monday–Saturday.
