Install New Manifold and PEX Lines
Part of project
How to Replace Grey Polybutylene Pipe with PEX · Step 6 of 9
A comprehensive, verbose guide to performing a whole-house re-pipe, replacing old and failure-prone grey polybutylene (PB) plumbing with modern, durable PEX (cross-linked polyethylene) tubing. This project involves meticulous planning, system shutdown, accessing pipes within walls, removing the old system, installing a new PEX manifold and lines, making secure connections, thoroughly testing for leaks, and finally, repairing the access points.
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FAQs
How much time and money should I budget for a whole-house PEX re-pipe, and is it truly a DIY-friendly project?
This is an intermediate to advanced DIY project, typically taking several weeks for a homeowner, especially when accounting for wall access and repair. Material costs can range from $1,000 to $4,000+ depending on house size, not including drywall repair. While saving significantly on labor, it requires careful planning, patience, and meticulous execution to avoid costly errors.
What are the most critical safety precautions I must take when replacing my polybutylene plumbing?
Always shut off the main water supply and drain the entire system before beginning any work. Verify power to any areas where you'll be cutting into walls is off to prevent electrical hazards. Wear appropriate personal protective equipment (PPE), including eye protection and gloves, and be mindful of potential lead paint or asbestos in older walls, requiring professional testing if suspected.
The project mentions PEX-A tubing but a PEX-B crimp tool. Is there a specific type of PEX connection tool I should use, and why is it important?
Yes, ensuring reliable, leak-free connections is crucial. PEX-A tubing is typically used with expansion fittings, which require a specialized expansion tool, offering full flow. PEX-B tubing is commonly used with crimp or cinch tools (like the Apollo Quick-Cinch Clamp Tool listed) and compatible fittings. Always match your chosen PEX tubing type with the correct fittings and installation tool to ensure the strongest, most compliant, and leak-free connections.
What are the most common pitfalls DIYers encounter during a full-house re-pipe, and how can I avoid them?
Common mistakes include inadequate planning of pipe runs, failing to fully pressure test the new system, and not properly securing pipes, leading to leaks or water hammer. Avoid these by meticulously mapping out your new system before cutting, performing a thorough hydrostatic pressure test before closing walls, and using support clamps for PEX tubing every 32 inches.
Install New Manifold and PEX Lines
Part of project
How to Replace Grey Polybutylene Pipe with PEX · Step 6 of 9
A comprehensive, verbose guide to performing a whole-house re-pipe, replacing old and failure-prone grey polybutylene (PB) plumbing with modern, durable PEX (cross-linked polyethylene) tubing. This project involves meticulous planning, system shutdown, accessing pipes within walls, removing the old system, installing a new PEX manifold and lines, making secure connections, thoroughly testing for leaks, and finally, repairing the access points.
Frequently Asked Questions
How much time and money should I budget for a whole-house PEX re-pipe, and is it truly a DIY-friendly project?
This is an intermediate to advanced DIY project, typically taking several weeks for a homeowner, especially when accounting for wall access and repair. Material costs can range from $1,000 to $4,000+ depending on house size, not including drywall repair. While saving significantly on labor, it requires careful planning, patience, and meticulous execution to avoid costly errors.
What are the most critical safety precautions I must take when replacing my polybutylene plumbing?
Always shut off the main water supply and drain the entire system before beginning any work. Verify power to any areas where you'll be cutting into walls is off to prevent electrical hazards. Wear appropriate personal protective equipment (PPE), including eye protection and gloves, and be mindful of potential lead paint or asbestos in older walls, requiring professional testing if suspected.
The project mentions PEX-A tubing but a PEX-B crimp tool. Is there a specific type of PEX connection tool I should use, and why is it important?
Yes, ensuring reliable, leak-free connections is crucial. PEX-A tubing is typically used with expansion fittings, which require a specialized expansion tool, offering full flow. PEX-B tubing is commonly used with crimp or cinch tools (like the Apollo Quick-Cinch Clamp Tool listed) and compatible fittings. Always match your chosen PEX tubing type with the correct fittings and installation tool to ensure the strongest, most compliant, and leak-free connections.
What are the most common pitfalls DIYers encounter during a full-house re-pipe, and how can I avoid them?
Common mistakes include inadequate planning of pipe runs, failing to fully pressure test the new system, and not properly securing pipes, leading to leaks or water hammer. Avoid these by meticulously mapping out your new system before cutting, performing a thorough hydrostatic pressure test before closing walls, and using support clamps for PEX tubing every 32 inches.