
Water Leak Repair & Pipe Replacement
Finding the leak, repairing the pipe and replacing failing pipework in New York City buildings — copper, PEX, and the old galvanized and cast iron that should have gone years ago.
Leaks, Repipes and Everything Between
Water Leak Repair
Leaks at joints, valves, fixtures and concealed runs located, isolated and repaired before they reach the floors below.
Pipe Repair
Pinholes, splits, corrosion and failed joints cut out and replaced with a proper repair rather than a clamp and a hope.
Pipe Replacement
Full and partial repipes for buildings still running on galvanized, cast iron or lead, with minimal disruption to tenants.
Water Line Repair
The service line feeding the building — supply loss, pressure drop and leaks on the incoming main diagnosed and repaired.
Shut-Off Valve Replacement
Seized, weeping and non-isolating stop valves replaced so you can actually shut the water off when you need to.
Burst Pipe Repair
Split pipes from freezing, pressure spikes and failed joints repaired fast, then the cause addressed so it does not repeat.
New York Buildings Are Full of Old Pipe
Plenty of pre-war and post-war stock in Brooklyn, Queens, the Bronx and Manhattan is still running on galvanised steel, cast iron or, in the oldest buildings, lead supply pipework. Galvanised steel closes up with internal rust until pressure and flow collapse; cast iron thins and cracks at the hub; lead is a health issue as well as a plumbing one.
Where we replace, we work in copper and PEX. Copper remains the standard for exposed and riser work in commercial buildings; PEX pipe installation is often the practical choice for in-unit supply replacements where access is tight and the number of joints has to be kept low.
Soldering and jointing is done properly — cleaned, fluxed, heated and tested — because almost every callback in this trade is a joint somebody rushed.
Signs of a Leak You Cannot See Yet
The water meter moves with everything off
The simplest test there is. Shut every fixture down and watch the meter — movement means a leak somewhere on the supply.
Stains, bubbling or warm patches
Discolouration on ceilings and walls, lifting flooring, or a warm spot on a slab can all trace back to concealed pipework.
Pressure dropping or water discoloured
Falling pressure at fixtures, or brown water after work on the main, points at internal corrosion and failing pipe.
A musty smell in one area
Persistent damp odour with no visible source is usually slow moisture inside a wall or floor assembly.
Pressure Problems and Valve Failures
Water Pressure Repair
Low or uneven pressure traced back to its real cause — a closing valve, a blocked section of pipe, a scale-reduced main or a supply-side problem.
Copper Pipe Repair
Failed sections of copper cut out and replaced, with the jointing method matched to the pipe and the building.
Pipe Repair Questions
Often yes. We work out where the leak actually is before we cut, and use the smallest access that lets the repair be done properly — then coordinate the making-good with your builder.
It is disruptive, but it can be sequenced. We plan the work in stages, keep water on for as many units as possible, and give residents and the managing agent a schedule they can plan around.
Yes. Replacing outdated galvanized, cast iron and lead pipework is a core part of our pipe replacement work in older NYC buildings.
Shut the water off at the main if you can and call us as an emergency. Our emergency plumbing page explains what to do while the crew is coming.
Related Plumbing Services
Plumbing Crews Across NYC & Westchester
Pipe Squad NYC Inc. is based in Brooklyn and dispatches crews throughout the boroughs and lower Westchester County.

Ready to Get This Sorted Properly?
Tell us what's happening on site and we'll come back with a clear scope of work — no pressure, no sales pitch.
