If the time has come to remodel your home plumbing system, or if you are building a new home, an important decision is to choose between plastic or metal pipes. How can you choose from the many options available? Some factors to consider when making a decision are: cost; environmental and health concerns; And, if you are replacing part of a plumbing system, what type of plumbing is already in place.
Metal tubes
Copper pipes are the most popular type for new homes. They are less likely to leak, are recyclable, durable, and heat tolerant. Copper’s biggest downside is its high price, although some might say the price is worth the quality! If your water is very acidic, this can corrode the copper over time. They can also be difficult to install, making it less likely to be a DIY project.
Older houses may have a few other varieties of metal pipes. Galvanized pipes are sometimes found in homes built before 1980. They are very heavy and can contain lead that can be released into the water if the pipe corrodes. They can cause other problems, such as frequent clogs in the lines and discolored water as they age. If your home is old and has galvanized pipes, it might be time to consider replacing them.
Less commonly used types include stainless steel tubing, which is strong and of high quality, but even more expensive than copper; and cast iron pipes, which are durable, although somewhat bulky, and pair well with PVC pipes for a mixed pipe system.
Plastic tubes
Plastic pipes are a modern option that is relatively inexpensive and lightweight. They do not rust or corrode over time like metal does. Plastic is easier to work with for those who want to try DIY plumbing projects at home. There are several types of plastic pipes that are commonly used in residential plumbing.
The most commonly used type of plastic pipe is PVC (polyvinyl chloride pipes). PVC is popular for bathrooms and vents. It is good at handling high water pressure and shares the other advantages of plastic. However, the disadvantages of PVC pipes are several. May have difficulty handling extremely hot water, warping over time. Some people find that PVC pipe gives the water a plastic taste.
PEX tubing is another commonly used form of tubing. The main benefit of these pipes is that they are very versatile for use in tight spaces where you need to work with a small wall space or tight bends, or if you need a long pipe. They are also heat resistant, unlike PVC pipes, and can be adapted to work with other pre-existing pipes in the home. There appear to be some environmental concerns regarding PEX tubing, although they are approved in many areas.
Lesser known forms of plastic tubing include PB tubing, which can be used as an inexpensive replacement for damaged copper tubing, but is of poor quality; and HDPE pipes, which are flexible and durable, giving them a wide application of plumbing uses.