The Advantages of PEX
PEX, a flexible tubing that comes in long rolls, offers several advantages over traditional piping. First, you can usually make long continuous runs, eliminating most elbows and joints. You can snake long runs through joists and studs. Second, PEX doesn't sweat under high humidity conditions, and it's also resistant to bursting, even if the lines freeze solid. Third, joints are easier. You add fittings simply by crimping metal rings over barbed fittings using a special crimping tool.
Use the Same Stuff
There are several different manufacturers of PEX. It is very important that you know which brand of pipes you're working with and install only that manufacturer's connectors and fittings. If you mix and match materials, you will void your warranty and may fail your inspection. Worst-case scenario: You'll end up with leaky pipes and water damage. Not all products have recognizable markings on them, so leave a few of the packaging labels on-site to appease the inspector and for future reference.