Menu

Call This Tuesday to Get $50 OFF

banner
5.0 RATING

Toilet Supply Lines: Plastic vs. Metal

When it comes to toilet installation or toilet replacement, one of the crucial aspects of the job is to consider the type of material to…

May 05, 2026
Toilet Supply Lines: Plastic vs. Metal

When it comes to toilet installation or toilet replacement, one of the crucial aspects of the job is to consider the type of material to use for toilet supply lines. In most cases, the choice comes down to two main types of piping: plastic piping and metal piping. So, which material is better? Some plumbers lean towards plastic piping due to its cost-effectiveness and ease of installation, while many old-schoolers still think metal piping is the best. Let’s explore what each type of material has to offer so you can make an informed decision.

Plastic Pipes

Plastic pipes are made from PEX, CPVC, or PVC, each with unique properties and temperature limitations. In today's plumbing landscape, plastic piping tends to be used more for toilet water supply lines compared to metal piping. This shift has occurred for several reasons, including cost-effectiveness, versatility, and ease of installation. However, there are many people who still prefer metal piping for a variety of reasons. 

Our Customers Reviews

Larry R.

Howell Township, NJ

It was a late Saturday night. We had a super stubborn clog in some old galvanized pipes. Mr. Rooter send out Phil. Phil was great! He found the problem pretty quick. With determination and professionalism he final got it cleared out. I would recommend Mr. Rooter and Phil to anyone! He even cleaned up. We are so happy we choose Mr. Rooter!

Rose Bernard

Red Bank, NJ

We had a plumbing emergency and found Mr. Rooter while frantically searching for a 24-hour plumber. We feel like we hit a gold mine. Not only did we get a timely response. Everyone at Mr. Rooter was friendly, professional, competent and went above and beyond. Our plumber, Phil, was extremely helpful and gave us tips we could use moving firwars. Not to mention, the cost was extremely reasonable.

Joseph Chis

Hillsborough, NJ

Had sewer water backup in toilet and tub. Received callback as promised and arrived early. The tech determined we needed the main line to be cleared. He quickly located the opening and had us cleared in minutes. Very happy with the service. I was not prepared for the fee but it was an emergency.

Christopher Cox

Little Silver Township

Plumber, Phil, came out on short notice on a Saturday night and fixed our issue quickly, professionally and courteously. I contacted a different, well known plumbing company right before Mr. Rooter. The receptionist was rude and they didn’t call me back to say they couldn’t make it until after Phil left! The Mr. Rooter receptionist was very nice and they called me back quickly. I’m glad they did.

Debbie Dimitrion

Colts Neck, NJ

I just wanted to say James did a great job at my house. Excellent service, professional and very nice. Thank you so much for helping me with my plumbing problem. Did wonderful job.

Rachel Turunen

Jackson Township

I was very happy that I went with Mr. Rooter’s. The service was very quick and up front. Jessie James was very helpful answering my questions and replacing my hot water heater. He was pleasurable to do business with. If another problem arises in my home, I will be using this company again.

William Holden

Brick Township, NJ

A thorough, professional, pleasant experience. I had a back-up in the 50 year-old pipes of my new home. I called Mr. Rooter to have them locate the blockage, snake the line, and then use their video snake to get a visual of the integrity of the pipes. I’m glad that I called and will use them again for future needs.

LarJ MarJ

Oakhurst, NJ

You get what you pay for. Edwin Robles of Central NJ educated me as a 1st time homebuyer on why and what he was repairing, prevention, PROMPT,(on a sunday at that!) clean, knowledgeable, super professional but DOWN TO EARTH and at a REASONABLE PRICE! Sewer pipes unclogged and main water line fixed. I was no longer crying once job was thoroughly executed. After all $#@* $tinks but somebody has to do it and I HIGHLY recommend him and this company for a job well done. THANK YOU VERY MUCH!!

Margie Rafferty-Criscione

Ocean Township

Absolutely lovely office staff! I always knew when the repair person was coming. Lorenzo our repair guy was awesome, I really don't think there is anything he can't do. He looks young, but don't let that fool you! So happy all the repairs are behind us. We really just did a one-stop shopping and decided to have everything we've put off fixed because it was such a tremendous experience!

Toilet Supply Lines: Plastic vs. Metal

Advantages of Plastic Pipes

  • Cost-effective: Plastic pipes are cheaper than metal pipes, both in material and installation costs. This makes them an attractive option for budget-conscious projects or cost-saving renovations.
  • Easy installation: They’re flexible and require simpler connection methods like crimping or gluing, making them DIY-friendly.
  • Corrosion-resistant: These pipes are immune to most water elements. This reduces leak risks and ensures a longer lifespan.
  • Freeze-resistant: Certain types, like PEX, expand slightly when frozen, preventing bursts during cold weather.

Disadvantages of Plastic Pipes

  • Temperature limitations: Not all plastic piping types handle high temperatures like metal. It’s advisable to check specific ratings so that you can make the right choice.
  • Susceptible to damage: Plastic pipes can be punctured or damaged by sharp objects or extreme heat.

Metal Pipes

Metal piping, traditionally used in plumbing, offers distinct characteristics compared to its plastic counterpart. There are three types of metal pipes—copper, galvanized steel, and stainless steel, each with different strengths and weaknesses.

Advantages of Metal Pipes

  • Durability: Metal, particularly copper, is extremely durable and can last for decades with proper care. They are less susceptible to wear and tear compared to plastic options.
  • High-temperature resistance: Metal pipes can handle higher water temperatures than most plastic options, making them suitable for hot water supply lines.
  • Aesthetics: Copper pipes can offer a traditional and aesthetically pleasing look in exposed areas.

Disadvantages of Metal Pipes

  • Cost: Metal pipes are generally more expensive than plastic options like PEX and CPVC.
  • Installation complexity: Installing metal pipes, especially copper, requires soldering skills and specific tools, making it more challenging for DIY projects.
  • Susceptibility to corrosion: While some metals are resistant, others like galvanized steel can be prone to corrosion in specific environments.

Plastic Piping vs. Metal Piping: Which One Should You Choose?

As you can see, each type of piping material offers distinct characteristics and advantages. Your choice boils down to your specific needs, budget, and local regulations. At Mr. Rooter Plumbing, we recommend you:

Choose metal pipes if:

  • You prioritize durability and longevity.
  • You value the traditional look of copper pipes.

Choose plastic pipes (PEX or CPVC) if:

  • You're on a budget.
  • You prefer a simpler installation process.
  • You're conceed about corrosion risks in your water.

If you’re unsure about the pipe material to choose for toilet supply lines, you can always consult with a professional plumbing service that specializes in toilet installation, repair, and replacement.

Mr. Rooter Plumbing: The Go-To Plumbing Repair Service for Toilet Installation and Replacement

If you’re looking for an all-in-one plumbing service that can install, repair, or replace your toilets, look no further than Mr. Rooter Plumbing. We’ve built an outstanding reputation over the years for offering quality toilet installation and toilet replacement services for both homeowners and businesses. 

Latest Updates & Blog Posts

The Worst Things We've Found Inside Garbage Disposals
Apr 22, 2026

The Worst Things We've Found Inside Garbage Disposals

The Worst Things We’ve Found Inside Garbage Disposals Garbage disposals are one of the most convenient features in any kitchen,…

Read More
What Plumbers Wish You Knew About Your Water Line
Apr 20, 2026

What Plumbers Wish You Knew About Your Water Line

What Plumbers Wish You Knew About Your Water LineYour home’s water line is one of the most important parts of…

Read More
Do Older Homes Always Need Sewer Replacement?
Apr 12, 2026

Do Older Homes Always Need Sewer Replacement?

Do Older Homes Always Need Sewer Replacement?Older homes have charm, character, and history—but they can also come with aging plumbing…

Read More
How Drain Cleaning Improves Water Flow and Reduces Plumbing Issues
Apr 05, 2026

How Drain Cleaning Improves Water Flow and Reduces Plumbing Issues

How Drain Cleaning Improves Water Flow and Reduces Plumbing IssuesClogged or slow drains are more than just a minor inconvenience—they…

Read More
The Worst Things We've Found Inside Garbage Disposals
Apr 22, 2026

The Worst Things We've Found Inside Garbage Disposals

The Worst Things We’ve Found Inside Garbage Disposals Garbage disposals are one of the most convenient features in any kitchen,…

Read More
What Plumbers Wish You Knew About Your Water Line
Apr 20, 2026

What Plumbers Wish You Knew About Your Water Line

What Plumbers Wish You Knew About Your Water LineYour home’s water line is one of the most important parts of…

Read More