Whether PEX or copper is "better" depends on your project, but PEX is generally superior for DIYers and budget-conscious homeowners because it costs 25% to 50% less and is much easier to install. However, copper remains the premium, time-tested choice for durability and whole-house longevity.
Plumbers often prefer PEX (cross-linked polyethylene) over copper tubing because it is significantly cheaper, much faster to install, and highly flexible. Additionally, PEX is highly resistant to corrosion, does not rust, and expands slightly if water freezes, making it less prone to bursting in cold weather.
Insurance companies sometimes hesitate to cover homes with PEX plumbing because of past class-action lawsuits regarding defective brass fittings, a history of premature failures, and ongoing debates over how certain pipes react to harsh water chemistry.
While PEX (cross-linked polyethylene) is a popular, flexible, and budget-friendly plumbing choice, it has notable drawbacks. Its primary disadvantages include susceptibility to UV degradation and rodent damage, chemical leaching concerns, limited fire resistance, and specific flow or code restrictions.
A complete PEX repipe for a 2000 sq. ft. house typically costs between $𝟓,𝟎𝟎𝟎 and $𝟏𝟐,𝟎𝟎𝟎, with most homeowners spending around $𝟕,𝟎𝟎𝟎 to $𝟗,𝟎𝟎𝟎. This estimate includes all supply lines, water main replacements, basic permits, and moderate drywall repair, but can vary by location and layout.
PMRs for malignancies of the stomach, kidney, brain, and lymphopoietic system were also elevated, especially among plumbers. Chronic rheumatic heart disease, emphysema, liver cirrhosis, and all external causes of death were the major non-cancer causes with significantly elevated PMRs.
However, recent failures and the lawsuits that have followed those failures lead to the idea that PEX plumbing systems aren't as good as once assumed. PEX systems can fail in either the pipe or in the fitting. The most notable failure occurs when the fittings fail and water starts leaking and causing visible damage.
Rodents, particularly rats and mice, are known to chew through PEX plumbing. Because the material is soft and easy to gnaw, even a small rodent problem can lead to leaks, water damage, and costly repairs hidden inside walls or under floors.
PEX (cross-linked polyethylene) plumbing typically lasts between 40 and 50 years. Manufacturers often provide warranties of 25 years, but when properly installed and maintained within standard water pressure and temperature limits, the tubing itself often exceeds a half-century of use.
While PEX is highly flexible, affordable, and easy to install, it can degrade under UV light and is susceptible to rodent damage. Depending on your priorities—longevity, water purity, or structural rigidity—the primary alternatives listed below outperform PEX in specific applications.
When speaking to a home insurance adjuster, the goal is to be factual and avoid speculation or casual oversharing. Never admit fault, guess about the cause of damage, downplay the severity of the loss, or accept the first settlement offer on the spot.
In plumbing, the "135-degree rule" is a code standard that dictates how much a horizontal drain pipe can bend or change direction. It limits the total cumulative angle of pipe fittings before a system requires an access point (cleanout) or must be vented, ensuring proper flow and preventing chronic clogs.
Did you know that PEX piping is used in about 60% of new construction projects to date? This makes it a prevalent material used in new buildings.
Vinegar acts as a highly effective, natural cleaning and polishing agent for copper. The acetic acid in vinegar reacts with copper oxide (the dark or green tarnish) to dissolve it, restoring the metal’s bright, shiny appearance.
PEX is cheaper than copper, both in terms of material and labor costs. The cost of PEX vs copper is particularly important for large-scale projects, such as commercial repiping, where budget constraints are a key factor. PEX is also easier to install.
Mice have an incredibly sensitive sense of smell, making them highly repelled by strong, sharp, and spicy odors. Their absolute least favorite scents include peppermint oil, white vinegar, ammonia, cinnamon, and cloves.
Water inside uninsulated PEX pipes will freeze when the surrounding temperature drops to 𝟐𝟎∘𝑭(−𝟔.𝟕∘𝑪) or below. However, unlike rigid copper or PVC, PEX is highly flexible and can expand to accommodate freezing water. While the water inside will freeze, PEX itself usually does not burst unless temperatures drop to an extreme −𝟒𝟎∘𝑭(−𝟒𝟎∘𝑪) or lower, or if it undergoes repeated freeze-thaw cycles in the exact same spot.
A rat's biggest overall enemy is humans. Through habitat destruction, urbanization, and extermination efforts, humans pose the greatest threat. In the animal kingdom, their primary natural predators include birds of prey (like owls and hawks), snakes, wild canines, and felines.
Insurance companies scrutinize homes with PEX plumbing because of a history of class-action lawsuits, specifically regarding the degradation of brass fittings and early pipe failures. Because water damage is a leading source of expensive home insurance claims, carriers often view older or improperly installed PEX as a liability.
Vinegar is generally safe for PVC pipes in small, infrequent amounts, but overusing it can degrade the material and weaken rubber seals or joints over time. While it won't melt or corrode PVC like chemical drain cleaners might, it is also highly ineffective at clearing hard clogs.
SharkBite manufactures both PEX-A and PEX-B piping. You can buy either depending on your plumbing project's needs.
Repiping a 2,000-square-foot house with copper typically costs between $𝟖,𝟎𝟎𝟎 and $𝟐𝟎,𝟎𝟎𝟎, with most homeowners paying around $𝟏𝟎,𝟎𝟎𝟎 to $𝟏𝟔,𝟎𝟎𝟎. The final price depends heavily on plumbing access, the number of bathrooms, and local labor rates.
Both PEX crimp rings and stainless steel cinch clamps (clamps) are reliable for leak-proof seals, but the best choice depends on your project constraints. Crimp rings are generally better for overall durability and cost-effectiveness, while clamps are superior for tight spaces and versatility with multiple pipe sizes.
When buried underground, PEX (cross-linked polyethylene) tubing typically lasts 40 to 50 years, though its actual lifespan depends heavily on how it is handled and the local environment.