Which is better PEX or PVC?
Although PEX pipes are very durable and can last anywhere from 40-60 years, PVC pipes are known for having a little bit longer of a life expectancy of 70+ years when they're well-maintained!
PEX pipes can last as long as 50 years. PVC (when kept in the correct conditions) can last for 70 years. However, CPVC (which is copper lined and therefore more durable than PVC) will need to be replaced every 20 years. This means that cheap PVC lasts the longest, but durable PEX lasts longer than the strongest PVC.
PVC and copper in freezing temperatures. PEX piping is better at expanding with frozen water than alternatives. Additionally, PEX requires minimal maintenance and is often less likely to leak. It is often more expensive than copper or PVC, but many users find that the cost is recoverable over time.
Pex piping should not be used in high-temperature applications or in places where it will be exposed to direct sunlight for extended periods of time. Doing so can cause the material to degrade and potentially lead to leaks. It is also not advised to use pex piping for outdoor plumbing without proper protection.
PEX cannot be taken anywhere outside the house where it is directly exposed to UV for a long period. The synthetic material of the pipes can slowly disintegrate due to the light of the sun. Even light bulbs have been known to affect the lifespan of PEX water lines.
PVC and CPVC have more strength and durability than PEX because they are more rigid, making them better suited to outdoor applications where the piping may be subjected to trauma. Because of its rigidity, PVC is less flexible than PEX. You must install an elbow instead of simply bending it around a right angle.
CPVC pipe can withstand higher temperatures than PVC or PEX pipe (up to 200 degrees Fahrenheit vs. 140 degrees Fahrenheit). It's ideal for residential water distribution because it offers better joint strength than PVC and copper and better corrosion resistance versus metal pipes.
PVC is the cheapest option, but it's not necessarily the best pipe for every application. For example, using PVC pipes for drinking water or hot water is not recommended. The next in line is ABS piping, with PEX piping being the most expensive.
Defective PEX pipes will not last 50+ years as advertised and quickly degrade and become brittle when exposed to hot chlorinated water.
Which pipe is best for outdoor water line?
CPVC plastic pipes are your best bet when installing water pipes for internal and external (exposed to sunlight) household applications.
Copper pipes remain popular among plumbers and homeowners alike because they are corrosion-resistant and best suited to protect the quality of the water.
Bottom line, PEX A is more resistant to burst pressure than PEX B. PEX A's expansive material can handle up to 500 PSI, which makes it reliable in extremely cold temperatures. Since PEX B is a more rigid material, it will not hold up as well in similar situations.
PEX pipes are very thick, but they are still susceptible to rodent damage that can cause pipes to crack or break. Possible Leaching: Although uncommon, some homeowners and plumbing companies have reported a few PEX pipes leaching harmful contaminants like BPA (Bisphenol A) into the water supply.
Plastic pipes, such as CPVC, and PEX are pipe materials that are safe for drinking water.
PEX Pipe Is Vulnerable
Rodents Chewing Through PEX Pipe is a common problem in our area. It doesn't matter how old your home is, if you have an attic, you need to watch for rodent damage to PEX Pipe or PVC. If you're hearing rustling noises coming from the attic, it's time to do an inspection.
Back in the late 90's, certain PEX piping systems used yellow brass fittings which, under certain circumstances, dezincified and failed prematurely resulting in a series of class action lawsuits and settlements.
The truth is, as with any piping, PEX is still vulnerable to freezing if the temperature drops low enough. But thanks to its flexible material, the plastic expands under the pressure of the freeze, significantly reducing the chance of bursting. That means your house is unlikely to flood due to a burst PEX pipe.
California plumbing code now accepts PEX pipeCalifornia plumbing code now accepts PEX pipe. Effective immediately, local governments in California may approve the use of cross-linked polyethylene (PEX) drinking water systems in all residential and commercial applications, as well as hospitals and clinics.
PEX pipes and copper pipes are both viable options for your water supply line. While PEX pipes are easier to install, cheaper, and more flexible, copper pipes are sturdier and tend to have a longer lifespan.
How long does PEX last?
PEX: Due to its flexibility and durability, PEX piping should last at least 50 years. PVC / CPVC: Under typical conditions, these pipes should last up to 100 years.
For whole-house repiping, the choice usually comes down to copper or PEX (cross-linked polyethylene). This plastic piping is durable and less expensive than copper. PEX is easy to install, which means the cost of installation may be low as well.
CPVC pipes are the best hot and cold pipes and have replaced the use of copper pipes in almost all the applications for several reasons.
PVC pipes can be used for both warm and cold water applications as PVC pipes do not corrode or rust over time, they do not need to be replaced frequently. They are also easy to work with as they do not require any welding or metal work like steel or iron pipes. For high-pressure applications, PVC pipes are ideal.
PEX, or cross-linked polyethylene, piping is a modern plumbing technique for water lines in a home. PEX piping has three main advantages when used in your home: durability, reduced number of joints, and the ability to expand when frozen.