PVC - Pros - Long life. PVC has a predicted lifespan of 50-70 years or more, compared with 40-50 years for PEX. - Lower cost. PVC is less expensive to purchase than PEX, although it usually will ...

When you compare the material costs of PEX vs PVC, PEX comes out more expensive. (However, balance this factor against the lower labor cost to install PEX.) - UV intolerance.