When plumbing projects in Golden require a choice between copper and PEX, several key considerations come into play. Copper has a long and good reputation for being durable, with an expected lifespan comparable to that of PVC or PEX. It resists UV light, bacteria, and other degrading forces well, so if you ever have to retrofit your plumbing to be outdoors, copper is a solid choice. Plus, because it is such a dynamic and attractive metal, resale value is also something to consider. Installing copper in your home could potentially add to its value in the marketplace. Still, despite all of those pros and a few more that could be listed, PEX is a much better choice in most situations in terms of practicality and value.In contrast, PEX offers greater flexibility, enhancing installation ease and speed, especially in retrofitting situations. It is also generally cheaper, resistant to scaling, and impervious to chlorine. Moreover, PEX has a greater tolerance of freezing temperatures, which can be an advantage in plumbing systems located in northern climates. It's important to mention, however, that PEX is not for outdoor use. When exposed to UV light, it can degrade. And, of course, there are those who raise questions about long-term effects—on both health and the environment—of using a material that relies so heavily on chemicals in its manufacture.In the end, the choice may also boil down to local building regulations and individual taste, but both materials have widespread acceptance in residential plumbing. If you are looking for something cheaper and simpler to install, PEX is probably your best bet. If you want something that will last and don't mind paying a bit more upfront, go with copper. And in either case, it helps to have a chat with a local plumbing contractor to nail down the particulars.