Switching from copper to PEX Published on March 1, 2015 in Vapour barrier, drywall, and moreFull resolution (1728 × 3072) Next → Transitioning from copper to PEX is readily accomplished with a “Sharkbite” coupling – no soldering required! Just push it onto the copper on one side, and push the PEX tubing into the other – instant water-tight fitting!