Concrete Replacement in South Harlem, Manhattan

Which Concrete in South Harlem Is Worth Replacing Instead of Patching?

Replace concrete that has settled, cracked through or lost its surface. Patches work on sound slabs with shallow flaws. On row house blocks, that usually means sidewalk flags beside tree pits, areaway floors that hold water and rear yard slabs that have heaved or sunk.

The neighborhood is full of brownstone and brick row houses, with tenements, pre war apartment buildings and newer condo buildings along Frederick Douglass Boulevard. Each has concrete in different places and under different loads.

A hollow sound when you tap a slab, or rocking underfoot, tells you the base has failed. A patch over that will not hold, so replacement is the sensible choice.

Where the concrete usually fails

Look at flags beside stoops, areaway floors below the sidewalk level, rear yard patios and any slab near a downspout. Water is the common enemy in each place.

How Is Concrete Removed and Replaced on a Row House Lot?

Crews break the old slab with hand held tools, carry debris out through the house or side access, and bring new material in the same way. We rebuild the base, set forms and pour concrete with the right pitch. Row house lots are narrow, so the plan is built around access.

An areaway or rear yard may only be reachable through the building. We protect floors and walls along that route, and the estimate says plainly how access changes the labor.

Drainage is the detail that decides how long the new slab lasts. We pitch it away from the foundation and toward a drain, or toward the street for a sidewalk.

After the pour, the surface is finished with a texture that grips in rain. We tell you when it is safe to walk on and when carts or furniture can return.