Above-ground PEX piping installed horizontally must be supported at intervals not to exceed?

For above-ground PEX piping installed horizontally, it is essential to provide adequate support to prevent sagging, stress, and damage to the piping system. The Texas plumbing code and industry standards establish the requirement that horizontal PEX piping must be supported at intervals not to exceed 18 inches. This support spacing is necessary because it helps maintain the integrity of the PEX material and ensures that the piping remains properly aligned and functional.

This closer interval is especially important due to the flexibility of PEX, as excessive distance between supports can lead to excessive movement or bending, which could ultimately compromise the joints or connections in the piping system. By adhering to the 18-inch support rule, plumbers ensure that the installation remains reliable and minimizes the risk of leak occurrences or structural failures in the piping system.