Flag replacement The process of removing and replacing a single, full square section of a concrete sidewalk, commonly referred to as a "flag".
Under NYC Highway Rules, patching or applying thin overlays to a damaged concrete flag is not permitted to resolve a violation. Instead, contractors must perform a complete flag replacement, which involves cutting the joints, removing the old concrete, preparing the subbase, and pouring a new standard 5'x5' flag. This ensures the sidewalk maintains a uniform surface and complies with city durability standards.
Frequently Asked Questions About Flag replacement
What is flag replacement?
Removing and replacing a full square section of concrete sidewalk, typically a five-by-five-foot flag, rather than patching part of it.
Why not just overlay the damaged flag?
Thin overlays and patches on a concrete flag are not accepted under NYC Highway Rules for resolving a violation.
What does the process involve?
Saw cutting at the joints, removing the old concrete, preparing and compacting the subbase, forming, pouring, and finishing to the required slope and scoring.
How many flags need replacing?
Only those cited on the Preliminary Inspection Report, unless the owner chooses to replace more for appearance or condition.
How long before the new flag can be walked on?
Typically a day or so for light foot traffic, with full strength developing over weeks. Follow the contractor's guidance for the specific mix and weather.