Areas that have high iron in the water will cause iron scale to build up on the inside of the pipe. Other possible causes if on city water is metal water pipe in the supply. Over time it may get darker and is not unusual. In the past it was not visible because the pipe was not transparent like PEX.

Does sunlight affect PEX pipe?

While UV light affects all plastic piping to some degree, in PEX it can amplify the inherent incompatibility of the material with chlorine and chlorine-based compounds used in water treatment.

Does PEX pipe mold?





If you have oddly-shaped areas in your home, PEX can bend up to 90 degrees. This makes it possible to mold these pipes in ways you can’t with copper, PVC, or ABS pipes.

Does PEX pipe rust?

If you have PEX pipes with problematic fittings, you can hire a plumber to switch you over to DZR (DeZincification Resistant) brass or poly PEX fittings, both of which are not susceptible to corrosion. A secondary cause of the problem is related to water quality.

Can bacteria grow in PEX?

PEX pipe showed a higher growth of coliform bacteria than copper pipe [42]. The levels of released metal from plastic pipes were monitored in five pipe systems, PB, PVC, PP, PE, and cPVC. The metal levels in new plastic facilities were not serious except for PVC and cPVC, respectively.

How long will PEX pipe last outside?

But, PEX will deteriorate if it’s left in the sun. PEX has an expected life of 25 to 40 years. Therefore, it is expected that it will need to be replaced 40 years after it has been installed. During that time it will experience minor wear and tear – but is unlikely to leak or rupture.

How long will PEX last outdoors?





Myth: PEX tubing has a short life span. Fact: The life span of PEX tubing can vary based on frequency of use, water quality and water temperature and has an average life expectancy of 40-50 years.

Can you use bleach on PEX pipe?

Bleach is a powerful, toxic substance that should be used carefully and properly, and pouring it down a drain is not a proper use. Bleach can react with other substances in your pipes, potentially release fumes, and further plug up the system.

Is PEX OK for drinking water?

These leakage products consist of residues of additives used during production to give plastic pipes their desired properties, as well as any subsequent breakdown products. The study showed: There are no health risks associated with drinking water from PEX pipes.

When should you not use PEX pipe?

PEX plumbing is fine inside the walls of a home, no matter the temperatures as it can be covered with insulation. However, one of the disadvantages of PEX plumbing is it cannot be used outdoors in cold climates as there is no way to cover them and protect them from freezing temperatures.

How do you flush PEX?



Quote from the video:
Quote from Youtube video: Inside your homes before you drink the tap water to start remove the aerators or screens from your taps to clear out any debris unscrew. The screen and separate the parts soak them in white vinegar.

Does PEX leach BPA?

PEX does not contain BPA, and there is no conclusive evidence that PEX leaches any sort of harmful chemicals into the water. Any concerns about the taste of the water can usually be rectified by simply letting the water run for a bit.

Can you use PEX for hot water?

Color-Coded: Red PEX pipes can be used for hot water supply lines, blue PEX for cold water supply, and white for either hot or cold. These colors are just for your convenience. Plumbing code does not require the pipe color to match the type of water supply.

Do mice eat PEX?



The Problem



Mice and rats will chew through anything they can, including plastic, so PEX tubing is at just as much risk as the plastic-coated wiring in a car or an HVAC unit. While all rodent damage can be expensive, if rodents chew through a home’s PEX water pipes, the result can be disastrous.

Where is PEX not allowed?

PEX can’t be installed in high heat areas.



You can’t install PEX in high heat areas like near recessed lighting. This also means you can’t connect PEX directly to a hot water heater, but you can use a connecting material to do this.

Will PEX burst if it freezes?

PEX pipes, just like any pipe, can freeze when the temperature drops too low. Because the pipes are designed to be flexible, PEX has the ability to expand. Although it is still possible for them to burst, this means PEX pipes are less likely to rupture after freezing.

Can rats chew through PEX pipe?

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.

How do you winterize PEX?



Ways to Keep PEX Pipe from Freezing

  1. Keep the room temperature above 55 F.
  2. Add insulation to particularly cold places such as attics, garages and basements.
  3. Drip faucets to keep water moving in the pipes.
  4. Shut off the water to outside hose bibbs (spigots) & drain the pipes.
  5. Install frost-free sillcocks.

Should you insulate PEX pipe?

You should insulate PEX pipes because they can freeze and potentially burst when temperatures drop below 20 degrees Fahrenheit. This is particularly important in cold regions, crawl spaces, attics, or other cold places. Doing so can also improve energy efficiency and reduce moisture and condensation.

Is it OK for hot and cold PEX lines touch?

Hot and Cold Water Lines Should Never Touch



The picture above is of PEX hot and cold water lines that have been run through the framing and are touching each other the entire way. This has passed the rough plumbing inspection and is ready for insulation and drywall.

What is wrong with PEX plumbing?

PEX piping has a maximum bend radius, which can lead to stress on the pipe caused by improper installation. In addition, extreme bends and kinks place a very high local stress on the wall of the pipe, making it more susceptible to oxidative degradation.