Pipe Repair in NYC

Can you repair a burst pipe in the wall?

A burst pipe inside your wall needs immediate action — shut off the water at the main valve, then call a plumber who can open the wall and make the repair. We handle the full job, including drywall restoration.

How we repair a burst pipe inside your wall

• Wall access: We cut drywall 12–18 inches beyond the visible damage using an oscillating multi-tool to expose the pipe fully.
• Pipe repair: The damaged section gets removed and replaced with a slip coupling using ProPress (no open flame) or a push-fit fitting like SharkBite — the fix takes 45–90 minutes.
• Cost range: A basic in-wall pipe repair runs $400–$1,500; if drywall restoration is needed, add $150–$400.
• Prevent recurrence: If the pipe burst from freezing, we inspect the wall cavity insulation and draft-proofing — without that step, the same section can freeze again next winter.

What happens after we fix the pipe — drywall and restoration

We include drywall patching with mesh tape and joint compound in most burst pipe repairs, adding about 30 minutes to the job and $150–$400 to the total if wall restoration is needed. The patch gets sanded smooth and primed, though we don’t always include paint in the quote — ask upfront. In pre-war NYC buildings with lath-and-plaster walls, we use a different patching method than drywall: plaster base coat with a setting-type compound rather than joint compound. Make sure your plumber asks about wall type before cutting — cutting lath-and-plaster the same way as drywall creates a much larger repair area. That distinction alone can save you an extra day of drying time and a second trip.

Do you repair copper pipe pinhole leaks?

Pinhole leaks in copper pipes are common in older NYC buildings, caused by aggressive water chemistry or age, and we offer both temporary and permanent repair options.

Temporary vs permanent pinhole leak repair on copper

When a pinhole leak means you need a full repipe

If we find pinhole leaks in three or more locations on the same pipe run, we recommend a full section replacement or repipe — spot repairs on corroded pipe rarely hold long-term. One pinhole often signals more forming; if your copper pipe is over 20 years old with multiple pinholes, a full repipe may cost less than repeated spot repairs. NYC water pH runs 7.0–7.5, but buildings with old galvanized steel lines upstream can create localized acidic conditions that eat copper from the inside out.

Can you repair frozen pipes?

Frozen pipes are a winter emergency across NYC, and we thaw them safely without open flame, then pressure-test afterward to catch hidden cracks that could burst later.

How we thaw frozen pipes safely

• Thawing method: We start at the faucet end with a heat gun or hair dryer, working toward the frozen section — never using open flame, which can ignite wall insulation or damage copper or CPVC pipe.
• NYC winter context: January lows average 26°F, and wind chill on exterior walls drops to 15°F, putting uninsulated pipes in Brooklyn brownstones and Manhattan high-rises at risk.
• Burst risk: If the pipe has already cracked, the ice inside may be the only thing stopping a flood — we thaw slowly and keep a repair coupling ready, and the job typically runs $400–$1,200 depending on access.
• Prevention tie-in: Foam pipe sleeves (R-3 to R-6) and self-regulating heat tape cost $50–$200 in materials versus $400–$1,200 for a thaw and repair.

What we check after thawing to make sure the pipe isn’t damaged

After thawing, we pressure-test the pipe to check for hairline cracks that only show when water pressure returns — a pipe that looks fine can still leak once the system is repressurized. On copper lines, we look for bulging at the joint where ice expanded the wall; that bulge weakens the pipe structurally even without a visible split. We also inspect solder joints and threaded fittings for separation, since ice expansion can pull a joint apart by an eighth of an inch without dripping immediately. I’ve seen frozen copper pipes fail weeks later at those weakened spots — so we mark every bulge with tape and schedule a follow-up pressure check. For a typical frozen-pipe call that didn’t burst, the repair runs $400–$1,200; if we find hidden damage, we quote the section replacement on the spot.

How do you detect a slab leak?

Warm spots on the floor, rising water bills, or white mineral deposits on concrete all point to a slab leak. We use several detection methods to find the exact spot without unnecessary jackhammering.

Three methods we use to find slab leaks without breaking concrete

What happens after we find the slab leak

Once we pinpoint the slab leak, we offer trenchless epoxy lining if the pipe is structurally sound, or a targeted excavation if the pipe has collapsed — detection cost is credited toward the repair. A FLIR camera reads temperature differences between the leaking hot water line and the surrounding concrete, while tracer gas (a 5% hydrogen, 95% nitrogen mix) lets us locate even hairline cracks within two inches. Slab leaks under finished flooring add $200–$500 for tile or hardwood removal and replacement — ask about this before we start so there are no surprises.

Do you offer trenchless pipe repair?

We offer trenchless pipe repair using epoxy lining for slab leaks and underground pipes — it avoids cutting into walls and floors, but it isn’t right for every situation.

How trenchless pipe repair works from start to finish

• Camera inspection: We push a drain camera through the pipe to locate the damage and assess whether the pipe is structurally sound enough for lining — takes about 15–20 minutes.
• Hydro-jet cleaning: High-pressure water at 3,000–4,000 psi blasts out scale, debris, and grease so the epoxy liner bonds directly to clean pipe walls.
• Liner installation: An epoxy-impregnated felt tube is inverted into the pipe using air pressure, then cured with hot water circulation for 60–120 minutes per section.
• Final inspection: We run the camera through again to confirm the lining is smooth, fully adhered, and free of wrinkles — the whole job runs 2–4 hours per section.

Before we start, we always check the pipe condition with the camera first — if the pipe has collapsed or bellied, the liner can’t pass through and we have to excavate instead.

When trenchless repair won’t work

Trenchless repair isn’t suitable for collapsed pipes, severely bellied sections, or pipes with multiple large holes — in those cases, we excavate and replace the damaged section. The liner manufacturer warranty typically runs 10–50 years, but our workmanship warranty is the standard 1 year — the liner itself is covered by the manufacturer, not by us. At Eco Service NY, we’ve found that roughly 1 in 5 slab leak calls ends up needing excavation because the pipe has already collapsed or the damage is too extensive for the liner to bridge. That’s why we never quote trenchless work over the phone — we always camera-inspect first and give you both options with their real costs, so you’re not surprised if the liner won’t fit.

What causes pipe corrosion?

Pipe corrosion has multiple triggers — water chemistry, flow velocity, galvanic reaction, and stray current — and identifying the specific cause determines the right repair approach.

Six common causes of pipe corrosion in NYC buildings

• Water pH imbalance: Acidic water below pH 6.5 dissolves copper from the inside out, while alkaline water above pH 8.5 deposits scale that promotes pitting corrosion.
• High water velocity: Flow over 6 feet per second erodes the protective patina layer on copper pipe walls, exposing bare metal to oxygen and accelerating wear.
• Galvanic reaction: Dissimilar metals in direct contact — copper joined to old galvanized steel without a dielectric union — create a battery effect that eats through the steel pipe at the joint.
• Stray electrical current: Electrical systems that ground through copper pipes (common in pre-war NYC buildings) send DC current through the plumbing, causing electrolysis that perforates pipe walls from the inside.
• High water temperature: Water at 140°F corrodes copper roughly three times faster than water at 120°F — hot water recirculation lines fail sooner than cold supply runs.
• Sediment erosion: Sand, grit, and rust particles from water main breaks or old galvanized supply lines scour the pipe interior, thinning walls and exposing fresh metal to corrosion.

In pre-war buildings with mixed metal plumbing — copper joined to old galvanized steel without a dielectric union — galvanic corrosion eats through the steel pipe at the joint within 5–10 years.

How NYC water chemistry affects your pipes

NYC tap water has a pH of 7.0–7.5, which is slightly alkaline and generally safe for copper pipes — but buildings with old galvanized supply lines can create localized acidic conditions that accelerate pitting. The municipal supply itself is well-buffered, but once water passes through decades-old galvanized steel with internal rust deposits, the corrosion byproducts can drop the pH at the point of use. That’s why we see pinhole leaks cluster in buildings where the risers are galvanized but the branch lines are copper — the water chemistry changes as it travels through the old steel. If you have pinhole leaks in multiple locations, test your water pH — below 6.5 means you need a whole-house neutralizer, not just pipe repairs.

How do I prevent pipes from freezing?

Frozen pipes are preventable with simple measures, and prevention costs a fraction of burst pipe repair — especially important during NYC winters when January lows average 26°F.

Five steps to prevent frozen pipes this winter

• Insulate exposed pipes: Cover pipes in unheated spaces — crawlspaces, attics, exterior walls — with foam sleeves rated R-3 to R-6. At $0.50–$1.50 per linear foot, this is the cheapest insurance against a $400–$1,200 repair.
• Apply self-regulating heat tape: Wrap pipes that still get cold after insulation with electric heat tape that activates at 38°F. A 10-foot roll runs $30–$60 and pays for itself in one avoided freeze.
• Leave faucets at a slow drip: During extreme cold, open both hot and cold taps to a pencil-thin stream. Moving water freezes at a lower temperature — the drip relieves pressure if ice does form.
• Open cabinet doors on exterior walls: The kitchen sink on an exterior wall is the most common freeze point in NYC apartments. The cabinet door traps cold air — leaving it open lets warm room air circulate around the pipes.
• Keep your thermostat at minimum 55°F: Even when you’re away, set the heat no lower than 55°F. Below that, interior wall temperatures can drop below freezing, especially during a January cold snap with wind chill on exterior walls reaching 15°F.

What to do if you come home to frozen pipes

If you find frozen pipes, shut off the main water valve immediately, open the faucet to relieve pressure, and call us — we’ll thaw the pipe safely and pressure-test for hidden damage. Never use a torch or propane heater to thaw pipes; NYC fire departments respond to dozens of structure fires each winter from open-flame thawing attempts. Prevention costs $50–$200 in materials; a burst pipe repair runs $400–$1,200 — and that’s before drywall restoration. The single most effective step is that cabinet door: nine times out of ten, that’s what makes the difference in a Brooklyn brownstone with pipes running through an exterior kitchen wall.

Key Takeaways for NYC Pipe Repair

Main takeaways

Pipe repair in NYC ranges from $300 for a simple pinhole clamp to $5,000 for a trenchless section, depending on access, material, and damage extent. The key to minimizing cost is early detection — a slow drip behind a wall costs far less to fix than a full burst that floods a room. Frozen pipes are preventable with $50–$200 in insulation and heat tape, yet they cause thousands in damage every NYC winter. Slab leaks require specialized detection equipment — acoustic, thermal, or tracer gas — to avoid unnecessary concrete breaking. And if you’re dealing with multiple pinhole leaks in aging copper, a full repipe may be more cost-effective than repeated spot repairs.