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PEX-A vs PEX-B vs CPVC vs Copper: How to Choose Your Repipe Material in Metro Atlanta

Copper supply pipe with a pinhole leak, cut out of an Atlanta home

Most homeowners who reach us have already made the hard decision. They know they need a repipe. What they’re stuck on is the material sitting inside their walls for the next few decades. That’s the right question to sweat, and it’s also where most of the internet gets it wrong, because a material chart written for the whole country doesn’t know a thing about the water running through your house here in Metro Atlanta.

We’re Plumbing Express, a dedicated repipe specialist serving Metro Atlanta since 1989, with 180+ whole-house repipes completed across the metro in the past year alone and thousands of homes repiped over the life of the company. We install PEX-A, PEX-B, and FlowGuard Gold CPVC every week. So this isn’t a theory piece. This is what we actually reach for on the truck, and why, once we’ve looked at your home and your water.

01

Why Atlanta’s water beats any material chart

Here’s the thing a generic comparison can’t tell you. The material that fails is often the material the chart calls “the gold standard.” Copper is a beautiful pipe. It’s also the material we see develop pinhole leaks in Metro Atlanta homes with maddening regularity, especially in older-copper neighborhoods.

Researchers still debate exactly what causes copper pipe to develop pinhole leaks. What is not debated is the pattern we see in the field: pinhole leaks cluster by water system, strongest in homes served by Cobb County Water System and neighboring city utilities, and nearby homes tend to fail on similar timelines. The water meets all federal safety standards. The concern is pipe longevity, not drinking water safety.

Figure 1Your neighbor, then you
March

A brown ring shows up on a ceiling two doors down

One house. Nobody thinks much of it.

May

The neighborhood thread starts

Two more homes on the same street post about water stains and rising bills.

August

Three repipes on one street in a month

Same build year, same copper, same water system. The pattern is no longer a coincidence.

October

You find your first pinhole

Your pipe is the same age, in the same wall, carrying the same water.

November

Your repipe, in 2 to 5 working days

New lines to every fixture, tested before the water comes back on, and the walls put back by our own drywall and paint crew.

Illustrative of the pattern we see, not a specific address. In a planned subdivision, homes share a build era and often the same pipe, and failures cluster. Strongest in homes served by Cobb County Water System and neighboring city utilities — the water meets all federal safety standards; the concern is pipe longevity.

We’ve watched that pattern hold for years across Marietta, Smyrna, Austell, and Powder Springs, plus homes in Cherokee and Gwinnett counties. It’s why we don’t lead with a national spec sheet. You don’t need to win the chemistry debate to read the pattern. So when someone asks us “which material lasts longest,” the honest answer starts with “where do you live and what’s your pipe doing now,” not with a durability column on a table.

02

The four materials, plainly

PEX-A

PEX-A is the most flexible of the bunch. It’s a cross-linked polyethylene tube that we join with expansion (press-style) fittings that hold the pipe’s full inner diameter open at every connection. That flexibility means fewer joints, and joints are where systems fail. PEX is now the fastest-growing part of our repipe business, and for good reason.

PEX-B

PEX-B is the same family, cross-linked by a different method, a little stiffer, and every bit as capable inside a wall. We install Viega PureFlow PEX-B and back it with a 25-year manufacturer materials warranty.

FlowGuard Gold CPVC

CPVC (we install FlowGuard Gold) is a rigid plastic joined with solvent-weld cement. It’s a proven supply material with a long track record and a 30-year manufacturer materials warranty behind FlowGuard Gold. It has real merits and we sell it on those merits.

Copper

Copper is the rigid metal pipe most 70s-through-90s Atlanta homes were plumbed with. We’ll install it on request, and it carries our workmanship warranty like anything else, but given the local pinhole pattern it is not a material we push for new installs.

A note on flow, since it gets misrepresented

One thing we won’t do is oversell PEX with a flow-rate story. PEX actually flows less than CPVC. Our fittings advantage is real, but it’s a PEX-versus-PEX advantage. Our premium expansion fittings keep the full inner diameter open, where older crimp fittings pinch flow at every joint, most noticeable at fixtures on longer runs like a master bath or a basement. If a contractor tells you PEX moves “70% more water” than CPVC, that number isn’t real.

03

Installation, cost, and lifespan compared

Figure 2Compare the four materials, one attribute at a time

Flexibility

How far the pipe bends around framing. More bend means fewer joints, and joints are where systems fail.

PEX-A
Highest
PEX-B
High
FlowGuard Gold CPVC
Rigid
Copper
Rigid

Best here: PEX-A. Fewer connections sitting inside your walls.

Joining method

How each length of pipe connects to the next. It’s the detail that decides how much water reaches your shower.

PEX-A
Expansion fitting
PEX-B
Press/crimp fitting
FlowGuard Gold CPVC
Solvent weld
Copper
Soldered

What it means for you: expansion fittings hold the pipe’s full inner diameter open at every connection, where older crimp fittings pinch flow at every joint.

Manufacturer materials warranty

How long the company that made the pipe stands behind it. Separate from, and additive to, our 10-year workmanship warranty on the installation.

PEX-A
25 yr (Uponor)
PEX-B
25 yr (Viega PureFlow)
FlowGuard Gold CPVC
30 yr (FlowGuard Gold)
Copper
Varies

Longest here: FlowGuard Gold CPVC, at 30 years. Uponor’s warranty is transferable if you sell the home.

Freeze tolerance

What happens on a hard Atlanta freeze when a line in an exterior wall or crawlspace ices up.

PEX-A
Best (flexes)
PEX-B
Good
FlowGuard Gold CPVC
Fair
Copper
Poor (splits)

Best here: PEX-A, because it expands instead of splitting. Freezing is not covered by any warranty, on any material.

Local pinhole risk

Whether we see this material fail from the inside out in Metro Atlanta water. This is the column a national chart can’t fill in for you.

PEX-A
None
PEX-B
None
FlowGuard Gold CPVC
None
Copper
Notable in CCWA areas

Only copper carries this risk locally. It is the material we are most often replacing.

Installed by us

What we stock, install every week, and warranty as our own work.

PEX-A
Yes
PEX-B
Yes
FlowGuard Gold CPVC
Yes
Copper
On request only

We’ll install copper if you ask for it. Given the local pinhole pattern, it isn’t what we push for new installs.

Not sure which column describes your house?Four questions about your home, and we’ll tell you where we’d start.

Find my material

On cost, the material itself is rarely what moves your number. What actually drives a repipe price is home size and fixture count, number of stories (vertical runs cost more than a single-level ranch), foundation type (a slab needs more cuts than a crawlspace or basement), and the drywall and paint restoration scope. Most Metro Atlanta homes we repipe land in the $10,800 to $14,100 range.

Figure 3What actually moves your repipe price
First

Home size and fixture count

Every fixture is a run of new hot and cold line. More fixtures, more pipe, more hours.

Then

Number of stories

Vertical runs cost more than a single-level ranch.

Then

Foundation type

A slab needs more cuts than a crawlspace or basement.

And

Restoration scope

The drywall and paint work needed to put the walls back, done by our own technicians.

Your number

Where most Metro Atlanta homes land

$10,800–$14,100

Some cost a little less, some quite a bit more. The material itself is rarely what moves your number, and the only way to get an exact one is a free in-home visit.

“Most homes run $10,800 to $14,100. That’s the range where the majority land, not the floor or the ceiling.”

Ty Gailey, owner

Some cost a little less, some quite a bit more, and the only way to get an exact number is a free in-home visit.

Lifespan is where the local reality matters most. On paper copper lasts generations. In practice, in the neighborhoods we work, copper is the material we’re most often replacing. The plastics don’t share that failure pattern here.

Want your number instead of a range?Tell us about your home and we’ll bring a fixed-price quote to the free in-home visit.

Start the questionnaire

04

PEX failure windows worth knowing

Not all PEX is a problem. Most of it performs well. But certain earlier generations of PEX have a documented failure history, and it comes in two separate windows.

Figure 4Two documented failure windows, 1990 to today
Pre-1995
Window one
1995–2010
2010–2015
no documented pattern
Window two
2015–2022
Today’s
reformulated PEX
19901995200020052010201520202025
Window one · roughly 1995 to 2010

These were design and formulation-era runs, several of them subject to class-action litigation. You identify them by the code printed on the pipe, cross-referenced against the lawsuit list, and you watch for yellowing or micro-cracking.

Window two · roughly 2015 to 2022

These were defective lots supplied to national production builders under exclusivity deals, which means whole subdivisions built by one builder in that window can share the same bad PEX. We’ve seen entire developments plumbed with a single problem lot.

Hatched stretches are the periods with no documented pattern. If your home was built inside a red band, the code printed on the pipe tells us which generation you have. The defect belongs to a product generation, never to a whole brand.

That’s why “my house is newer, so I’m fine” doesn’t always hold. Newer just narrows down the likely material. Real risk is about which manufacturer and which builder era. The reformulated PEX products on the market today are a different story, and the defect belongs to a product generation, never to a whole brand.

05

Warranty coverage by material, without the fine print

Some homeowners assume “10-year warranty” covers everything in the wall, and it doesn’t. Here’s exactly how ours works.

Figure 5Two layers of coverage, stacked
PEX-A (Uponor)
10 yr workmanship
25 yr materials
PEX-B (Viega PureFlow)
10 yr workmanship
25 yr materials
FlowGuard Gold CPVC
10 yr workmanship
30 yr materials
Copper
10 yr workmanship
0 YR102030
Our workmanship warranty on the pipeManufacturer materials warrantyVaries / not published

Plus 1 year on fittings, valves, and fixture supply lines. Warranty visits carry no diagnostic fee.

Every Plumbing Express repipe is covered in two layers. Our workmanship warranty backs the installation with a 10-year workmanship warranty on the pipe, plus 1 year on fittings, valves, and fixture supply lines. If anything about our installation does not hold up, we make it right, and warranty visits carry no diagnostic fee.

The manufacturer’s materials warranty is separate and additive. The pipe itself is backed by the company that made it: 25 years on Uponor PEX-A, 25 years on Viega PureFlow PEX-B, and 30 years on FlowGuard Gold CPVC, which our installs carry because Plumbing Express is a registered FlowGuard Gold contractor with Lubrizol.

Uponor’s warranty is transferable if you sell your home, and transferability terms for each material appear on your written proposal.

Which warranty would your repipe carry?The answer follows the material. Four questions and we’ll tell you which one we’d put in your walls.

Take the questionnaire

Covered

  • Our installation workmanship, 10 years on the pipe
  • Fittings, valves, and fixture supply lines, 1 year
  • The pipe itself, by its manufacturer: 25 / 25 / 30 years
  • Warranty visits, with no diagnostic fee

Not covered

  • Freezing
  • Corrosion
  • Normal wear and tear
  • Damage from work done by others after we finish
  • Consumable parts like washers and aerators

Full terms are stated in your signed proposal.

06

What the repipe itself actually involves

The material is the part people worry about least once we explain the work. A repipe replaces your entire water distribution system, up to every fixture in the home. That means new hot and cold lines serving your showers, sinks, toilets, washing machine, icemaker, and every other water connection, plus new valves, hose bibbs, the PRV, and the expansion tank.

Figure 6A repipe day, in order
01
Protective plastic goes on walls and furniture, wood floors covered

Before a single cut is made.

02
Strategic cuts in walls and ceilings for access, drywall set aside

Set aside, not destroyed. It goes back at the end.

03
New lines run through the home

Hot and cold, to every fixture in the house.

04
Hot and cold connected to every fixture and shower valve

Plus new valves, hose bibbs, the PRV, and the expansion tank.

05
Whole system tested before your water comes back on

Water’s back every evening.

06
In-house drywall and paint technicians restore the walls

Same job scope as the pipe crew. No second contractor to chase.

For island sinks on a slab foundation we have an alternative connection method that doesn’t always require breaking the slab.

On the day, we put protective plastic on walls and furniture, cover wood floors, make strategic cuts in walls and ceilings for access, set the drywall aside, run the new lines, connect hot and cold to every fixture and shower valve, then test the whole system before your water comes back on. For island sinks on a slab foundation we have an alternative connection method that doesn’t always require breaking the slab.

New PEX supply line run for a Metro Atlanta repipe
New supply lines run to every fixture in the home, then pressure-tested before the water comes back on.

The finish is where we’re different. We use dedicated in-house drywall and paint technicians working from the same job scope as the pipe crew, so there’s no second contractor to chase and no waiting on someone else’s calendar. Like a lot of our customers tell us, “you can’t find where the work was done.”

07

Our service area

We repipe across Metro Atlanta from our base off Presidential Drive, with heavy volume in the Cobb County corridor: Marietta, Smyrna, Austell, and Powder Springs, plus Cherokee and Gwinnett counties. If you’ve heard a neighbor got repiped, or your HOA or a neighborhood Facebook group is talking about pipes, that’s not a coincidence. In a planned subdivision, homes share a build era and often the same pipe, and failures cluster.

Don’t see your service? Call us today to find outA real person answers, 24/7.

Call (678) 439-9540

08

Which material fits your home?

Four questions, then a starting recommendation. The real answer still comes from looking at your home and your water, which is what the free in-home visit is for.

Start with your home

This narrows the field. It doesn’t replace a look at your existing pipe and your water service line.

09

Frequently asked questions

Why is CPVC no longer used in some homes?

CPVC is still very much a current, code-approved supply material, and we install FlowGuard Gold CPVC on repipes today. Its rigidity means more fittings and a solvent-weld joint at each one, so some installers prefer the flexibility of PEX, but that’s a preference, not a defect. FlowGuard Gold carries a 30-year manufacturer materials warranty, which tells you how the maker rates its longevity.

Why don’t insurance companies like PEX plumbing?

The hesitation traces back to certain earlier generations of PEX that had documented failures, not to PEX as a category. Most PEX performs well, and it’s the fastest-growing part of our repipe work. The failures cluster in two windows (roughly 1995 to 2010 and 2015 to 2022), and the pipe code tells you which generation you have, which is exactly why we read the code rather than judging PEX as a whole.

Why use CPVC instead of PEX?

Some homeowners choose CPVC for its rigidity, its long proven track record, and its slightly higher flow than PEX. We sell CPVC on its own merits and won’t pretend one material wins every situation. The right pick depends on your home’s layout, run lengths, and what we find on the free in-home visit.

How many years will CPVC last?

FlowGuard Gold CPVC carries a 30-year manufacturer materials warranty, and installed correctly it’s built to serve well beyond that. Keep the two warranty layers straight: that 30-year figure belongs to the material’s manufacturer, while our own workmanship warranty on the installation is 10 years on the pipe plus 1 year on fittings and valves.

Which material should I choose for my Atlanta repipe?

For most Metro Atlanta homes we recommend PEX-A or a quality PEX-B, with FlowGuard Gold CPVC as a strong alternative, and copper only when a homeowner specifically requests it.

Given the local pinhole pattern in copper, the plastics are usually the smarter long-term call here, but the real answer comes from looking at your home and your water first.

10

Get your number and your material recommendation

Most people who call us already know they want a repipe. They want a number and a plan, not a lecture, so that’s what we give you. We’ll come out for a free in-home estimate, look at your existing pipe and your water service line, recommend the right material for your home, and hand you a fixed-price quote where the number on the estimate is the number on the invoice.

Water’s back every evening, the job runs 2 to 5 working days, and there’s no pressure to move forward until you’re ready. Plumbing Express is a licensed and insured Georgia plumbing contractor, with 2,000+ reviews and a 4.9 average across Metro Atlanta. Call us or request your free in-home estimate to start the quote process.

4.9 average · 2,000+ reviewsLicensed & insured in GeorgiaRepiping Metro Atlanta since 1989

Plumbing Express

Plumbing Express 3050 Presidential Dr #202, Atlanta, GA 30340

What Atlanta Homeowners Say About Plumbing Express

Our 4.9-star rating comes from 2,000+ Google reviews written by real homeowners across Metro Atlanta. Here is what a few of them had to say.

Read more reviews on Google or visit our customer reviews page to see why Atlanta homeowners choose Plumbing Express.

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Jatara Ross
February 11, 2026

Service couldn’t be completed due to needing a new system. We appreciate the very informative visit as well as insight that could help after a new unit install.

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Bob Gallup
February 6, 2026

Plumbing Express was great. I had a failed sump pump that had partially overflowed into the basement. Nasty. Josh was the tech that did the work. He was efficient, neat and courteous. I will use Plumbing Express if I have any other plumbing needs and I will recommend them to my family and friends.

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Jim Kilburn
February 6, 2026

He was great

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Dwayne Cannon
February 6, 2026

The technician was very knowledgeable and professional. I believe they did a very good job.

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Freda Iaizzi
February 6, 2026

Ron was our second plumber from this company. The first plumber came, examined pipes and said he found no leak, even though we had experiences a large amount of water leaking from the ceiling in the finished basement. Several days later we had another leak-same area but less water the second time. Ron came in, listened to our frustration and did a more thorough inspection of the pipes and identified the problem. He was very personable and professional. On his third visit, we had several replacement pipes installed and are without leaks again. Our frustration, with the situation, was my son had used your company to replace pipes when he purchased the home and founding out not all the pipes were included with that process.

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Shaleypoley rocks
February 6, 2026

They always do a great job

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KB Johnson
February 6, 2026

Tim arrived on time and was very professional. He took his time to explain the problem and the process it would take fix the water line.

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Jay Betts
February 5, 2026

Called Plumbing Express as tankless hot water not operating. Their website states "Get Free Plumbing Quote ". When service man showed up an looked at unit he said there would be a $207 charge to look into unit in order to give me a quote to fix unit. Due to not having hot water and time required to get another company to address the problem I agreed to pay $207 for quote. After looking in unit I was told he would not be able to fix due to age of unit and parts not available. I think he should have said parts not available when seeing model number on front of unit and I would not have wasted $207.

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Kim Isaacs
February 5, 2026

Outstanding customer service, we will definitely be using them in the future for any plumbing needs. Can’t thank them enough!

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Ray Reynolds
February 4, 2026

Extremely knowledgeable and very helpful. The team was excellent. The job was completed in 1 day with a great team. Very expressive.

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Elizabeth Miller
February 3, 2026

Daniel Perez was great in coming out to check the problem I had with a water leak from my air conditioner line. His recommendation was correct.

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Nicholas Stodd
February 2, 2026

Great and informative service while I was in a bind without a functioning water heater.

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Sharron Stephens
February 2, 2026

Plumbing Express is my go-to plumbing support team. They have fair pricing, well-vetted technicians, and a truly exceptional scheduling system. Rod, my technician, was the best. He quickly assessed the problem and gave a fair estimate, working hard to keep to the schedule. He even brought Josh along on the day of service, and the two of them worked well together. They addressed the bathtub drain repair with expertise and caused the least sheetrock damage. It was difficult to replace the broken pipe and get to the upstairs drain, but together they made it a success.

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On Cue
January 30, 2026

Daniel did a great job and was very professional during his service call last week!

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Victoria Tucker Limon
January 29, 2026

Rod and Josh did an awesome job taking care of my clogged sinks. Knowledgable, professional and great to work with - I really appreciated their help today and would highly recommend them and Plumbing Express!

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william VAUGHN
January 29, 2026

Daniel was excellent. The work he did was simply superb. I highly recommend your company and hopefully Daniel will get more and more work

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Christian Landon
January 29, 2026

Dylan from Plumbing Express came over and replaced our garbage disposal for us. It was older, had a massive leak, and needed to be replaced. He did a great job and was in and out in about 30 minutes! I also asked him to check out a potential leak I had been hearing in my ceiling. He used a thermal camera to investigate and was very honest and upfront about what he found. Rather than immediately cutting into the drywall to confirm something uncertain, he explained that the sound could simply be pipes expanding and that opening the wall might be unnecessary. He recommended monitoring the area and waiting to see if a wet spot appears, which would clearly indicate an actual leak. I really appreciated that he didn’t try to upsell or push unnecessary work. Overall, great service and a great guy. They will definitely be our go-to plumbing service from now on.

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Mitchell Klasky
January 28, 2026

Tim was fast and explained options clearly

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Jo-Ann Caster
January 27, 2026

Once again we had some problems under our kitchen sink so we called Plumbing Express who were able to get us on their schedule pretty quickly after these storms Tim Robinson came out to do the job. Tim has been to our house for a number of different plumbing problems. He is personable & professional. As usual he did a great job even though this particular problem turned out to be far more difficult than anyone had expected. As frustrating as it was, Tim worked through it until he finished the job. We can't thank him enough.

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Robin R
January 27, 2026

Anthony was very competent, professional and friendly. He answered all my questions throughly. Highly recommend!