The advantage of PEX is its resistance to chemicals and UV radiation. PEX is not affected by most common household chemicals, such as bleach and ammonia, and is also resistant to UV radiation, which can cause other materials to degrade over time. However, there are also some potential disadvantages to using Cross-linked Polyethylene. One of the most significant concerns is the potential for leaching of chemicals, such as lead and other contaminants, from the piping into the water supply. However, PEX is typically installed with fittings and connectors made from lead-free materials to minimize this risk. Another concern is the potential for damage to PEX from exposure to direct sunlight or UV radiation, which can cause the material to become brittle and degrade over time. To minimize this risk, PEX should be installed in a shaded or covered location, or protected by an insulating material.
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