PEX Repiping
PEX repiping replaces old supply lines with cross-linked polyethylene tubing, a flexible pipe that routes through walls with far fewer fittings and joints. Fewer joints mean fewer potential leak points, and PEX resists scale buildup and freeze damage. FlowFast connects you with an independent local plumber experienced in PEX repiping for your home.
- Connected with an independent local pro — never a call center queue.
- Part of our Whole-Home Repiping services — explained up front.
Parent service
Whole-Home RepipingFrequent leaks or rusty water? Signs your home needs repiping, copper vs. PEX, and how to get connected with an independent local plumber.
View all Repiping servicesPEX, or cross-linked polyethylene, has become the most popular repipe material in the country for good reasons that show up during installation. It bends around corners without elbow fittings, so a single run can snake from a manifold to a fixture with almost no joints at all. It comes color-coded, typically red for hot and blue for cold, which makes future work easier, and its slight flexibility lets it expand a little if water freezes inside rather than bursting immediately.
Installation uses either expansion or crimp fittings, and the method matters for long-term reliability of every connection. A manifold, or home-run, layout gives each fixture its own dedicated line, which balances pressure beautifully when several fixtures run at once. FlowFast connects you with an independent local plumber who will design the layout for your home, use quality fittings installed to manufacturer spec, and pressure-test every run before the walls close up again.
Warning signs
Signs you need this service
- Your home has aging galvanized, polybutylene, or pinhole-prone copper that needs a full replacement soon before the next leak.
- You want a repipe with minimal wall damage, since flexible PEX fishes through cavities more easily.
- Freeze bursts have been a problem before, and you want pipe that tolerates cold snaps better.
- Water pressure drops when two fixtures run at once, which a home-run PEX layout can fix.
What to expect
The process, step by step
The pro plans the PEX layout, choosing between a manifold home-run system or a trunk-and-branch design.
New PEX lines are fished or run through attics, crawl spaces, and walls to each fixture location.
Fittings are expanded or crimped to spec, and every single run is pressure-tested for leaks before walls close.
Fixtures are connected, the system is flushed thoroughly, and pressure balance is verified at multiple fixtures.
Prevention
How to avoid this problem
- Keep PEX out of direct sunlight, since UV exposure degrades the tubing over time.
- Maintain moderate water pressure so fittings and tubing never face unnecessary stress or strain.
- Insulate PEX in unconditioned spaces even though it handles freezing better than rigid pipe.
Frequently asked questions
More Repiping services
Other whole-home repiping jobs homeowners ask about.
Plumbing problem? Don't wait on it.
Tell us what's happening and we'll connect you with an independent local plumber who fits the job.