Prestige Plumbing
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Gloved hands tightening a fitting on a copper supply line

Residential plumbing · Metro Detroit

Residential Repiping, Planned Room by Room

Planned replacement of aging supply lines, with access and wall restoration coordinated from the start.

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Overview

Residential Repiping, Explained.

The water supply lines inside a home are expected to last a long time, and many do. Some materials, though, age poorly. Galvanized steel corrodes from the inside, narrowing until pressure fades and the water runs discolored. Polybutylene, used in some homes built from the late 1970s into the 1990s, has a history of unexpected failures at fittings. Older copper can pit, particularly with certain water conditions.

Repiping replaces those lines with new ones, either throughout the house or in the sections that need it. It is a significant project, and in a finished home its success depends less on the pipe than on planning: where walls and ceilings will be opened, how long water will be off, how the household will live during the work, and who will restore the finishes afterward.

The visit

Residential Repiping: What the Visit Involves

  1. 01

    Identify materials and condition

    We trace the existing supply lines from the meter outward, identifying pipe materials, past repairs and visible corrosion, and noting where older and newer sections meet.

  2. 02

    Map the routes

    New lines are routed with the fewest and smallest openings practical, using basements, closets, chases and unfinished spaces wherever they allow. The likely access points are marked out and discussed with you room by room.

  3. 03

    Sequence the work

    A schedule is drawn up so water is off for the shortest periods possible, bathrooms are returned to service in turn, and furniture and finishes are protected in each area before it is opened.

  4. 04

    Test, close and hand over

    New lines are pressure tested before walls are closed. Access openings are left clean and ready for restoration, and we walk you through the new shut-off locations and layout.

Gloved hands tightening a fitting on a copper supply line

Making the decision

Copper or PEX, and whole-house or partial

Copper and PEX are both widely used for residential supply lines. Copper is rigid, long established and joined by soldering or press fittings. PEX is a flexible plastic tubing that can be run in longer continuous lengths with fewer joints, which often means fewer wall openings. Each has strengths depending on water conditions, the routes available and how the system will be laid out; we discuss them with you neutrally.

A full repipe makes sense when the material itself is the problem, such as polybutylene or heavily corroded galvanized. Where only part of the system is affected, a partial repipe may be reasonable. Connecting new pipe to old should be done thoughtfully, as joining dissimilar metals without the right fittings can accelerate corrosion at the junction.

  • Restoration is a separate trade

    Drywall repair, plaster, paint and tile are usually carried out by other trades after the plumbing is complete. Planning who restores each opening, and when, is part of the project from the first conversation.

  • Plaster walls and decorative surfaces

    Older homes may have plaster, hand-painted walls, paneling or wallcoverings that are difficult to match. Routes that avoid those surfaces are sought first, even when that makes the pipe run longer.

  • Living in the house during work

    Repiping can often be phased so the household stays in residence, with at least one bath and the kitchen kept in service each night. Where a permit is required, that is discussed before work is scheduled.

Questions homeowners ask

Residential Repiping: Questions Homeowners Ask

All questions
How do I know if my home has polybutylene pipe?

Polybutylene supply pipe is usually gray, sometimes blue or black, and flexible, often stamped with PB2110 or a similar code. Look where the main water line enters the house, near the water heater and under sinks. Some homes have copper stubs coming out of walls, with polybutylene hidden behind them, so a visible stub alone does not rule it out. If you are unsure, it can be identified during a visit.

How disruptive is repiping a whole house?

It depends a great deal on the house. Homes with accessible basements, crawlspaces or attics may need relatively few wall openings; homes with finished lower levels or slab sections need more. Water is typically off during working hours on some days and restored overnight. The disruption is real, but with phased work, protection of finished rooms and clear scheduling, many households remain at home throughout.

Can we repipe only part of the house?

Sometimes. If one branch has failed, or a renovation is already opening one area, replacing those lines while access is easy is sensible. The question is what remains. If the rest of the system is the same aging material, partial work may only postpone the next leak. We look at the condition of the lines that would stay before recommending a partial approach.

Should repiping be timed with a renovation?

Where possible, yes. A kitchen or bath renovation that is already opening walls and floors is the least disruptive moment to replace the supply lines in that area, and possibly to run new lines toward other parts of the house. Coordinating early with your contractor or designer means pipe routes are planned before framing is closed, rather than requiring new openings in freshly finished rooms.

Request a visit

Ask About Residential Repiping.

Tell us a little about what is happening and when suits you — a running toilet or a water heater that quit is as welcome as a remodel. We will be in touch to arrange a visit.

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  • ServingResidential homes across Metro Detroit

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