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Galvanized, polybutylene and aging copper

Repiping & Whole-Home Pipe Replacement in Denton, TX

Brown water in the morning, pressure that keeps dropping, or a third leak in two years. Repiping in Denton, TX replaces the supply lines throughout the house so the leaks stop for good, usually with minimal wall openings and the water back on each evening.

Whole-home repiping replacing galvanized pipe with PEX in Denton, TX

Rusty water, weak pressure or another leak?

Repiping rarely starts with someone searching for it. It starts with a problem that keeps coming back. The water runs brown after a trip. Showers lose pressure when the washer runs. Or the plumber who fixed the last leak mentioned that the pipe around it looked just as bad.

Whole-home repiping means replacing all of a house's water supply lines, hot and cold, from the main shutoff to each fixture. Drains are not part of it, and the work ends at the main valve inside. Everything beyond that point, out toward the meter, belongs to water line repair instead.

It is a bigger project than a repair, so the question is always whether it costs less than the repairs it prevents.

Pipe materials found in Denton homes

The age of a home usually tells you what is in the walls.

A plumber can usually identify the material at the water heater or under a sink.
MaterialCommon inTypical problem
Galvanized steel.Older homes near downtown and the Oak-Hickory Historic District.Rusts inside, chokes pressure, brown water.
Polybutylene (gray plastic).Homes built roughly from the late 1970s to the mid-1990s.Brittle fittings and pipe that can fail suddenly. Some insurers flag it.
Copper.Many homes from the 1960s onward.Pinhole leaks after decades, especially under slabs.
CPVC.Some homes from the 1980s onward.Can grow brittle with age and heat.
PEX.Most newer homes.Few issues when installed correctly.

How a repipe is done

Most repipes in North Texas use PEX, a flexible plastic tubing made to the ASTM F876 standard. It bends around corners, so it needs fewer fittings and fewer wall openings than copper.

On a slab home, new lines usually run through the attic and drop down inside walls to each fixture, leaving the old lines abandoned in the slab. That also ends future slab leaks on the supply side, which matters on Denton's shifting clay. Attic lines are insulated against summer heat and winter freezes.

The plumber opens small, planned sections of drywall, runs the new lines and connects each fixture. Water is usually restored at the end of each workday. The work follows the 2021 International Plumbing Code (IPC) adopted by the City, with a permit and inspection before walls are closed.

Signs it is time to price a repipe

One of these alone is not a reason to repipe. Two or three together usually are.

  • More than one leak in the past couple of years in different spots.
  • Discolored water that clears after running.
  • Pressure that has dropped over time at several fixtures.
  • Polybutylene or galvanized supply lines anywhere in the house.
  • A confirmed slab leak in a home with aging copper.

Repiping and home insurance

Some insurers ask about the pipe material in a home before writing or renewing a policy. Polybutylene in particular has a reputation for sudden failure, and some carriers decline coverage or charge more when it is present. Galvanized steel can raise similar questions.

If an insurer or a home inspector has flagged your supply pipe, a repipe with PEX or copper resolves the issue. Keep the permit and inspection record, since insurers and future buyers may ask for proof of the work.

A pre-purchase inspection on an older Denton home is also a good time to ask a plumber to identify the pipe material, so repiping can be factored into the offer.

What repiping costs depend on

These variables set the price of a repipe.

  • Number of bathrooms and fixtures.
  • Single or two-story layout, and attic access.
  • Material chosen. PEX usually costs less than copper.
  • Drywall patching and painting afterward.
  • Permit and inspection.

Repipe estimates are free. Ask for a written scope that lists every fixture included and who handles the drywall patching.

Get a repipe estimate: (940) 229-7314

Repiping questions

Many single-story homes take two to four days. Larger or two-story homes can take longer. Water is usually back on each evening.

Usually not. Most families stay home, since water is restored at the end of each day and the work moves room by room.

Yes. PEX made to recognized standards is approved for potable water under the plumbing code and is used in most new homes.

Yes, including older homes in Sanger and the other towns nearby.

Reviewed by the Denton Apex Plumbing team. Last updated September 25, 2026.

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