Can PEX Piping be used for Outdoor Applications, such as a Water Garden? A: The PEX material can be used outdoors if it is buried or otherwise protected. PEX piping can deteriorate in the presence of ultraviolet rays, so it should not be used outdoors if it will be exposed to sunlight.Click to see full answer. Consequently, can PEX pipe be used underground?- The answer is YES – It can be used underground. It should be buried below the frost line and best if bedded in sand or stone dust.Subsequently, question is, why is PEX plumbing bad? PEX failures Piping fails when the pipes are exposed to chlorine that is within the water, exposure to direct sunlight before its installation. Furthermore PEX pipe is vulnerable when it comes in contact with such solutions as petroleum products and oxygen. It can leach toxic chemicals from pipe material also. Likewise, can PEX tubing be exposed to sunlight? PEX piping is highly susceptible to damage by sunlight. If exposed to sunlight, the molecular structure disintegrates. This causes the piping to become brittle and rupture. Most manufacturers put UV stabilizers in PEX tubing to provide at least 30 to 60 days UV protection.Where is PEX not allowed?Pex not being allowed in commercial or industrial buildings, and thus not in residential buildings deemed “commercial industrial”.
