Caution: Do not use Uponor AquaPEX piping to connect the tub and shower valve to the tub downspout as this may create excessive back pressure in the valve, causing it to remain slightly open. I have always known pex to outflow copper...
They hate PEX because it's MORE reliable than copper, and much faster/easier to install = less money for them. It's also much less expensive which means they don't make as much on materials if they charge that way.
Currently, PEX plumbing is one of the most widely used plumbing systems around the world. It was temporarily banned in California for a while due to concerns about toxic materials but this was later disproven by laboratory tests.
PEX pipe is not approved for outdoor applications and is not approved for continuous UV exposure. PEX pipe should not be stored in direct sunlight.
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.
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.
Seal any holes you find to stop rodents from entering. Fill small holes with steel wool. Put caulk around the steel wool to keep it in place or use spray foam. Use lath screen or metal, cement, hardware cloth, or metal sheeting to fix larger holes.
The problem with PEX seems to be that it's contaminated -- it leaves the factory with chemicals used in its manufacture still on the pipe. In time it cleans up, but during that time those chemicals are going into the water.
PEX PIPING IS NOT Leak Resistant
There is a minimum allowable bend radius for PEX pipe and occasionally an installer will exceed the allowed bend radius and sometimes may even kink the pipe. Extreme bends and kinks place a very high local stress on the wall of the pipe making the pipe susceptible oxidative degradation.
Some studies suggest that chemicals used in the manufacturing process can leach into the water supply, posing risks to human health. The possibility of chemical leaching from PEX piping into drinking water has been a significant factor in its ban.
Most research suggests that PEX isn't ideal for drinking water. Filtering water from PEX lines makes it safe for consumption. Most homeowners stick to other pipe options for water supply lines, like copper.
PEX pipes are the top option for plumbing in Florida. But that doesn't mean you should automatically pass up a house that uses other materials.
PEX Pipe Class Action Lawsuits
A number of manufacturers, including Uponor, Viega, Nibco and Zurn, have already been sued over their PEX piping products.
CPVC is More Effective at Maintaining Water Quality than PEX
Biofilm Growth Potential: Biofilms, including Legionella and other harmful bacteria, can grow inside residential water pipes.
The lifespan of PEX pipes is one of their most appealing features. On average, PEX pipes can last anywhere from 40 to 50 years, and in some cases, even longer.
Our PEX pipe is not suitable for use in areas where the soil is or may become contaminated, including soil used for backfilling. Soil used for backfilling must be free of rocks, debris or any sharp object that may cause damage to the fitting or pipe through impact or abrasion.
In most cases, PEX is extremely durable and lasts up to 50 years or more. PEX piping is also less likely to crack or break than metal pipe because it does not expand and contract as much when heated and cooled.
Accelerated chlorine degradation can result in pinhole leaks in PEX pipes and fittings relatively early in their expected life. Abrasions or cracks that develop through the pipe wall or “popcorning” discoloration of the surface of PEX pipe are signs of chlorine degradation.
Copper Pipes
The most traditional of plumbing materials, copper is the most widely used option due to its durability and reliability. Copper's lifespan can reach well over 100 years at a time with superior corrosion resistance and is easily manageable with hot and cold water.
Copper has been a standard plumbing pipe material since the 1960s, and with good reason. First, copper is the preferred choice from a safety standpoint because it preserves drinking water quality. Unlike galvanized steel or cast iron, copper is corrosion-resistant and doesn't leach rust or sediment into the water.
Lower Lifespan Than Other Materials
While PEX plumbing is cheaper upfront, the cost benefits may be negligible when you consider that it might not last as long as copper or other materials. PEX pipes have an average lifespan of about 40-50 years, while copper can last over 70 years.
It'll work in the real world, but the manufacturer does not recognize this as a transition. So if you're a contractor transitioning from PEX-A to PEX-B, you should ask the manufacturer about how they want you to make this transition Get it in writing, so it doesn't void your warranty.
Mice will have difficulty climbing some surfaces that do not have the imperfections they need to get a decent footing. Smooth and slick materials made from plastic, metal, glazed wood, and glass typically don't provide the necessary grip for a mouse's claws to grasp which make them a challenge to climb.
Vinegar works by masking smells and oils which will deter mice and rats from entering an area or chewing on any material. However, it needs to be used with other methods since vinegar by itself will not keep rodents away from your home.