What to Expect During a Whole-Home Repipe

The words "whole-home repipe" land like a gut punch. It sounds expensive, invasive, and disruptive. People imagine their walls torn apart for weeks.

Here's the reality: most repipes on a standard Houston ranch home are done in two to four days. Yes, there are holes in the walls. Yes, you'll be without water for parts of the day. But in most cases you can stay in your home the whole time, and when it's over, you've got a house that won't need another repipe in your lifetime.

Let me walk you through what actually happens.

**Why homes need repiping in the first place**

Two pipe materials show up in Houston homes that were built before the mid-1990s and need attention.

Galvanized steel pipe was common in homes built before the 1970s. It rusts from the inside out. Over decades, the rust buildup narrows the pipe — your water pressure drops, and eventually the pipe fails or starts leaking. You may also notice brown or rust-colored water when you first turn on a tap.

Polybutylene (often called "poly-b") was used heavily in the 1980s and into the early 90s. It was cheap and fast to install, which made it popular during the Houston housing booms of that era. The problem is that it reacts badly to chlorine in municipal water supplies and becomes brittle over time. Insurance companies have started refusing to cover homes with polybutylene because of how frequently it fails.

If your home has either of these, repiping isn't a question of if — it's a question of when.

**Day by day: what the process looks like**

Day one is mostly preparation and rough work. The plumbers shut off the water and begin running new lines. For most homes, that means threading new pipe through the walls and attic (or under the slab in some cases). They'll cut access holes — typically small openings in drywall, not entire wall sections — wherever the new lines need to be connected or routed.

You'll be without water during working hours on day one, but water is typically restored by end of day so you can use your home overnight.

Day two is usually completion of the new lines, connection of fixtures, and testing. Every faucet, toilet, shower valve, and appliance connection gets checked. This is also when the plumber typically has a city inspection done if permits were pulled.

For larger homes or more complex layouts, the rough work may take a third day. Drywall patching — the cosmetic repair of the access holes — is typically handled by a separate contractor, or some plumbers offer it as an add-on.

**PEX versus copper: which is better?**

Both are solid choices. Here's the honest breakdown.

Copper has a proven track record of 50-plus years, handles heat well, and is a known quantity. It costs more for materials and labor because it requires soldering.

PEX (cross-linked polyethylene) is flexible, faster to install, and significantly less expensive. It handles Houston's hard water well and doesn't corrode. The flexibility means fewer fittings and joints, which means fewer potential leak points. Most repipes done today use PEX, and it's what ARG Plumbing typically recommends for Houston homes.

**Permits: don't skip them**

A repipe requires a permit in the City of Houston and most surrounding municipalities. Any plumber who offers to skip the permit to save money is putting you at risk. Without a permit and inspection, you have no documentation that the work was done correctly — which matters when you sell the house, file an insurance claim, or have a problem down the road. Always pull the permit.

**Living in your home during the work**

In most cases, yes, you can stay. Plan for no water during working hours for the first day or two. Set up a cooler with drinks, and consider filling some containers for basic use the night before the work starts. If you have a specific need — medical equipment that requires water, for example — let the plumber know in advance so they can plan around it.

If you're in a home with galvanized or poly-b pipe and you're starting to see the warning signs, call ARG Plumbing at (832) 419-3411. We'll come take a look, tell you what you're working with, and give you a straight estimate. No pressure, no upsell.