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Gather Tools and Materials — Removing Old Polybutylene Pipes

Intermediate40 hours

Part of project

How to Replace Grey Polybutylene Pipe with PEX · Step 4 of 10

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In this video

Gather all necessary tools and materials for the job. You will need a way to cut the old galvanized pipe, such as a jigsaw with a metal-cutting blade, a handsaw, or an angle grinder. For removing old fittings, have two pipe wrenches ready. For the new PEX installation, you'll need a PEX pipe cutter, a PEX clamp tool, and adjustable wrenches. The required supplies include the correct diameter PEX tubing (blue for cold water), various PEX fittings like adapters and tees, PEX clamps, and Teflon tape for sealing threads.

Goal: Prepare for Pipe Replacement

  • Using power tools like a jigsaw can make cutting the old pipe much easier and faster than a handsaw.
  • Ensure you have the correct size PEX tubing and fittings. The video uses 1/2-inch pipe.

Used in this video

  • Jigsaw (brand: DeWalt, Tool Type: Power Tools, Power Source: Electric)Cutting the old galvanized metal pipe.
  • Metal Cutting Blade (brand: Bosch, Tool Type: Power Tools, Material: Metal)Blade for the jigsaw designed to cut through metal.
  • Pipe Wrench (Tool Type: Plumbing Tools, Power Source: Manual)Gripping and turning the galvanized pipes to loosen threaded fittings.
  • PEX Pipe Cutter (brand: Kobalt, Tool Type: Plumbing Tools, Power Source: Manual)Making clean, straight cuts on the PEX tubing.
  • PEX Crimp Tool (brand: SharkBite, Tool Type: Plumbing Tools, Power Source: Manual)Securing the PEX clamps over the fittings to create a watertight seal.
  • Adjustable Wrench (Tool Type: Hand Tools, Power Source: Manual)Tightening the threaded PEX adapters onto the old galvanized pipe.
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FAQs

Given the 40-hour estimate, is a whole-house PEX repipe truly an 'intermediate' DIY project, or should I hire a professional?

While labeled intermediate, this project demands significant time, precision, and adherence to plumbing codes. It's suitable for experienced DIYers comfortable with tools and problem-solving, but if you're unsure about the complexity or time commitment, consulting a licensed plumber is advisable, especially for main supply connections and final inspections.

What are the most crucial safety precautions I must take when replacing polybutylene pipes with PEX?

Always shut off and thoroughly drain the main water supply before starting. Wear appropriate PPE, including eye protection, and ensure good ventilation if soldering is required for main tie-ins. Be cautious when cutting into existing lines to prevent accidental damage or uncontrolled water release, and always have a plan for containing potential leaks.

The project lists specific PEX tools like crimp tools and cutters. Are these absolutely essential, or are there budget-friendly alternatives?

Yes, specialized PEX tools such as a PEX pipe cutter and a crimp/clamp tool are essential for making reliable, leak-free connections. While there are different brands and price points, investing in quality PEX-specific tools is crucial for successful installation. Avoid using standard tools for PEX connections, as they can lead to costly leaks and system failures.

What are common mistakes DIYers make during PEX installation, particularly with crimp connections, and how can they be avoided?

Common mistakes include improper crimp ring placement, not fully deburring cut pipes, and over-tightening manifold connections. Always ensure the crimp ring is correctly positioned over the fitting's barb, deburr all pipe ends to prevent leaks, and follow manufacturer guidelines for manifold valve torque. Testing sections of the system as you go can help catch issues early.