# Copper Repiping in Dallas

> Copper repiping in Dallas: Type L or M tube joined with lead-free solder or press fittings, insulated and City-inspected. See what a quote should list.

URL: https://fullboredallasrepiping.com/copper-repiping/

We repipe in rigid copper tube, sweat-soldered or press-connected, planned around your attic route, fire safety during joining and the leak history that brought you here.

Call (469) 846-9377

Last Updated: November 10, 2026

Type L or M

Your estimate names the copper wall thickness; Type L is the heavier of the two

No-flame option

Press fittings join copper without a torch where heat near old framing is a worry

You have had a pinhole in the copper over the garage, then another in the bathroom wall, and you would rather put copper back than switch to plastic. That is a sound choice in many Dallas houses, as long as the new system fixes whatever made the old one fail. With copper repiping, Dallas homes get rigid tube joined fitting by fitting along straight runs through the attic and down the wall bays. [Fullbore Dallas Repiping](https://fullboredallasrepiping.com/) replaces water supply lines in Dallas homes, from a single bathroom branch to the whole house.

We plan the route, choose the joining method for each area with you, and have the new tube supported, insulated, pressure tested and inspected by the City before any wall closes. Copper costs more per foot than [PEX repiping](https://fullboredallasrepiping.com/pex-repiping/), takes more fittings and can need more openings, so we weigh it against your house and your leak history. The [PEX versus copper guide](https://fullboredallasrepiping.com/guide/pex-vs-copper/) sets the two side by side.

## What we check on the first visit

When your current pipe is copper, we start with the leaks. Where were they? Hot or cold line? How far from the water heater, and on straight runs or just past elbows and tees? A cluster of pinholes on the hot side just past a recirculation pump tells a different story from one leak at an old joint. If anyone kept the cut sections from earlier repairs, bring them out; the inside wall shows a lot.

Then we plan the new route. Rigid tube needs straight bays, room for fittings and supports, and access to each joint, so we check attic headroom, which walls line up with the bathrooms and where a run would have to cross a duct. We note where torch work would sit near old framing or insulation, which shapes the choice between sweat and press fittings. And we check the water heater, the PRV if you have one and the main shutoff for the connections the new copper will need.

## Pinholes keep coming back?

Copper pinholes rarely have a single cause. Velocity is a big one: water moving too fast through undersized tube, or a recirculation pump running hard, can wear the wall away just past elbows. Workmanship is another, especially flux left inside joints, burrs left on cut ends and tube rubbing on framing. Water chemistry plays its part as well. Our [recurring pinhole leak guide](https://fullboredallasrepiping.com/guide/recurring-pinhole-leaks/) explains how to read a leak pattern.

A copper repipe replaces aged and badly installed pipe. It does not change the water coming in from the street. That is why we pay as much attention to sizing, clean joints and pump settings as to the tube itself.

### When copper again makes sense

Putting copper back fits best when the old failures trace to something a repipe removes: undersized branches, a pump run too hard, careless original joints, or decades of patches with mixed fittings. It also fits houses with open, straight routes, such as a one-story slab house with clear attic bays over the bathrooms, where rigid runs need few extra openings. If the leaks are only on hot lines, [hot water line replacement](https://fullboredallasrepiping.com/hot-water-line-replacement/) may cover the problem without touching sound cold lines. Where routes are tight and every turn means another hole in finished drywall, flexible tubing usually wins on disruption.

## Type L or M, sweat or press?

Copper water tube is made to ASTM B88. Type L has a thicker wall than Type M, and both can be used inside the house where the code and design allow; we write the type and sizes on your estimate. Joints are either sweat-soldered with lead-free solder and flux or press-connected with fittings that seal with an O-ring when a powered tool crimps them. Press fittings cost more each but need no flame, which matters in an attic full of dry wood and loose insulation or inside a finished wall. Every pressed fitting is made with the jaws and tool its maker specifies.

Where new copper meets galvanized steel that stays, the code calls for a dielectric or brass transition so the two metals do not corrode each other at the joint. On a full repipe that is usually only at the main or the water heater.

Want copper priced on the same scope as PEX?

One walk-through gives you both routes, so you compare tube against tube instead of guess against guess.

Call (469) 846-9377

### Heat, freeze and the ground path

Rigid tube grows as it heats. A hot line crossing a Dallas attic in August moves, and a run clamped tight against framing ticks and wears. We support it at the code’s spacing with room to move. Insulation on attic and exterior-wall runs cuts summer heat gain in the cold lines and protects against a freeze like the February 2021 storm the National Weather Service in Fort Worth documented. In many houses the metal water pipe is also part of the electrical bonding path; staying with copper keeps it. The [attic routing guide](https://fullboredallasrepiping.com/guide/attic-pipe-routing-and-freeze-protection/) covers the protection details.

## Will you have to open walls?

More than with PEX, usually. Copper needs room, so we often open a cut at each turn that cannot be made from the attic and access behind each fixture. Tile walls, built-ins and kitchen cabinets are the usual hard spots. Your estimate lists the expected openings and who patches, textures and paints each one; the [wall openings and drywall repair guide](https://fullboredallasrepiping.com/guide/wall-openings-and-drywall-repair/) explains the finish levels.

Replacing supply piping is permitted plumbing work in Dallas. We submit the permit through DallasNow, and the City inspects at rough-in and final. Walls stay open until the rough passes; the City’s fee schedule lists $75 for a reinspection and $200 per trade for covering work before inspection. The [Dallas repiping permits guide](https://fullboredallasrepiping.com/guide/repiping-permits-dallas/) has the steps.

## What a copper repipe costs in Dallas

Our typical range for a whole-house copper repipe in Dallas is $8,500 to $18,000 and up. A one-story house with straight attic bays and two bathrooms sits toward the lower end. Two stories, more bathrooms, tile or plaster in the path, press fittings throughout and a larger patch-and-paint scope push it toward the top. For comparison, our typical range for a whole-house PEX repipe in Dallas is $4,500 to $15,000 and up.

We set your number after the first visit, and the written estimate lists what builds it: tube type and sizes, fixture and branch count, stories and route length, fitting count, sweat or press joints, openings in finished walls and tile, transitions to any pipe that stays, valves, the water heater connections, and the permit and inspections. The [repiping cost estimator](https://fullboredallasrepiping.com/tools/repiping-cost-estimator/) shows how those combine, and the [Dallas repiping cost guide](https://fullboredallasrepiping.com/guide/repiping-cost-dallas/) explains how to compare quotes on the same boundary.

For labor context, the Bureau of Labor Statistics reports a mean wage of $29.94 an hour for plumbers, pipefitters and steamfitters in Dallas-Fort Worth-Arlington, about 14% below the $34.70 national mean. A wage is not a billing rate: the billed rate also carries licensing, insurance, vehicles, permits and overhead.

## Before you decide

The [repair-or-repipe guide](https://fullboredallasrepiping.com/guide/repair-or-repipe/) helps you decide whether a copper leak calls for one fix or a new system. For the full boundary, see [whole-house repiping](https://fullboredallasrepiping.com/whole-house-repiping/). The [quotes and warranties guide](https://fullboredallasrepiping.com/guide/repiping-quotes-and-warranties/) lists what a copper scope should name, and the [repiping process and timeline guide](https://fullboredallasrepiping.com/guide/repiping-process-and-timeline/) shows the order of work.

Talk to us about your house

Call (469) 846-9377

Standards this work follows

- 2021 International Plumbing Code with City of Dallas amendments
- ASTM B88 seamless copper water tube, Type L or Type M
- Lead-free solder and flux; NSF/ANSI 61 and 372 for fittings and valves
- Press-connect fittings installed with the jaws and tool the fitting maker specifies
- Dielectric or brass transition fittings where copper meets retained steel
- DallasNow permit, rough-in inspection with walls open, then final

## What's included

- Copper distribution piping in the agreed boundary, with tube type and sizes written on the scope
- The joining method for each area: sweat, press-connect or both
- Hangers and supports at the spacing the code calls for, isolated where tube meets steel framing
- Fire protection during torch work, or press fittings where heat is not safe
- Dielectric or brass transitions where new copper meets galvanized pipe that stays
- Insulation on attic and exterior-wall runs for freeze, heat gain and condensation
- Pressure test and flush before walls close, then the City rough and final inspections

## Copper or PEX for a Dallas repipe

|  | Copper, Type L | PEX |
| --- | --- | --- |
| Shape of the route | Rigid; every turn is a fitting, so routes follow straight bays | Flexible; long runs and gentle bends with few hidden joints |
| Joining | Lead-free solder (torch) or press-connect fittings | Expansion or crimp/clamp fittings listed for the tubing |
| In a hot Dallas attic | Unaffected by sunlight; expands and contracts with heat, so supports and clearances matter | Must stay within its temperature rating and out of sunlight |
| In a hard freeze | Splits or separates at joints if water freezes inside | Tolerates some expansion but still blocks and can fail at fittings |
| Openings in finished walls | Often more, because fittings need room and access | Often fewer, because tubing can be fished through bays |
| Electrical bonding | Keeps a continuous metal path | Removes metal pipe; an electrician should confirm the bond |

## Related resources

- Decision Guide [PEX vs copper pipes: which suits a Dallas repipe?](https://fullboredallasrepiping.com/guide/pex-vs-copper/)Both are allowed under Dallas's plumbing code, and neither wins in every house. Your route, your attic, your fixtures and what you care about most decide which fits.
- Learn [What causes recurring copper pinhole leaks?](https://fullboredallasrepiping.com/guide/recurring-pinhole-leaks/)A copper pinhole is the end of a slow process inside the pipe wall. When they keep coming, where and when they show up tells you more than any single leak.
- Decision Guide [Should you repair or repipe a house with leaking pipes?](https://fullboredallasrepiping.com/guide/repair-or-repipe/)One leak is a repair. A pattern of leaks on the same pipe is a decision. Here's how to tell which one your Dallas house has, and what sits between the two.
- Learn [Repiping through attic space in Dallas: how should new lines handle heat and freezes?](https://fullboredallasrepiping.com/guide/attic-pipe-routing-and-freeze-protection/)Getting your water lines out of the slab usually means putting them in the attic. That solves one problem and raises two more, July heat and February cold, and the route, support and insulation have to answer both.
- Decision Guide [How to compare repiping quotes and warranties line by line](https://fullboredallasrepiping.com/guide/repiping-quotes-and-warranties/)Two repipe quotes for the same house can describe two different jobs. Lay them side by side on the same lines, then read the warranty terms for what they cover, who stands behind them and what voids them.

## How a Dallas repipe usually runs

1. First visit We count 14 fixture connections, trace the copper from the main shutoff in the garage, find the original lines running under the slab, check static pressure and the PRV, and look in the attic for headroom, insulation depth and a clear path from the garage to both bathrooms.
2. Written estimate Your estimate names PEX-A with expansion fittings, a home-run manifold beside the garage water heater, new quarter-turn stops, the old under-slab copper capped and left in place, the number and location of wall openings, and whether patch, texture and paint are included.
3. Permit Rearranging supply pipe is outside Dallas's limited exemption for stopping a leak, so the repipe is filed as permitted work through DallasNow before any pipe is cut. We keep the permit record with your estimate so you have both for your files.
4. Protection and openings Floors along the work path are covered, furniture is moved back from the wet walls, and small openings are cut behind the toilets, at each shower valve, under the sinks, at the washer box and at the kitchen sink wall.

## What this work looks like

A copper tee being sweat-soldered with a heat shield sheet protecting the wood framing behind it

Press-connect copper fittings with their pressed marks visible on a wall-cavity branch above a vanity

Type L copper lines with foam insulation sleeves crossing an attic above a two-story Dallas house

A brass dielectric transition where new copper joins an older galvanized line near a water heater

Leaning toward copper?

We plan the copper route, name the tube type and joining method, and list every opening the rigid runs will need.

Call (469) 846-9377

## Copper repiping questions

### Is Type L or Type M copper used for a Dallas repipe?

Both are made to ASTM B88 and both can carry water above ground where the code and design allow. Type L has a thicker wall, which gives more margin against wear and handling damage, and many homeowners ask for it. We write the type and sizes on your estimate, because two copper quotes can differ on that alone.

### Is a torch safe inside the walls of an older Dallas house?

Soldering takes heat, and dry framing, old insulation and attic debris can catch. The plumber shields the work, keeps water and an extinguisher at hand and watches the area after the joints cool. Where heat is a real concern, we use press-connect fittings, which join copper with no flame at all. Your scope says which method goes where.

### Does repiping a Dallas house in copper end pinhole leaks for good?

Nobody can promise that. Copper pinholes have several possible causes: water chemistry, water moving too fast, flux left in joints and how the original system was put in. New copper resets the age of the pipe and removes poor workmanship, but your water and its velocity stay the same. Correct sizing and clean joints are what lower the risk.

### Can Dallas Water Utilities' hardness damage new copper pipe?

Not in the way people fear. A December 2023 City memo reported DWU hardness of 120 to 155 mg/L as calcium carbonate, which is moderately hard to hard. That leaves scale in aerators, valves and water heaters. It is not shown to cause pinhole leaks in copper, and we will not blame hardness for a leak without other evidence.

### Why is a copper repipe quote in Dallas sometimes higher than PEX?

Copper costs more per foot, every turn needs a fitting, and every fitting is a joint made on site. Rigid runs can also need more wall openings, because tube cannot be fished through a bay the way flexible tubing can. When you compare quotes, go line by line: tube type, fitting count, openings and finish work.

## Related services

PEX repiping

We repipe with one listed PEX tubing and fitting system, laid out as trunk-and-branch or a home-run manifold and routed to handle Dallas attic heat and winter freezes.

Whole-house repiping

We replace every hot and cold supply line from the main shutoff to each fixture, usually rerouted through the attic on slab houses, then tested and inspected before the walls close.

Hot water line replacement

We replace the hot-side piping, and any recirculation return, from the water heater to your fixtures, and reconnect your existing heater rather than selling you a new one.