What is a common material used for water supply pipes in residential construction?

In residential construction, all of the materials mentioned—PVC, CPVC, and PEX—are commonly used for water supply pipes. Each material has its own unique properties and advantages that make it suitable for various applications.

PVC, or polyvinyl chloride, is widely used due to its lightweight nature, resistance to corrosion, and ease of installation. It is often used for cold water supply lines and is favored for its affordability and durability.

CPVC, or chlorinated polyvinyl chloride, is similar to PVC but is treated to withstand higher temperatures, making it suitable for hot water applications as well as cold. It has a high resistance to chemical corrosion and is also relatively easy to work with, which has made it a popular choice for many contractors.

PEX, or cross-linked polyethylene, has gained popularity in residential plumbing systems due to its flexibility and ease of installation, especially in tight spaces or retrofits. It is resistant to scale, chlorine, and other elements, making it ideal for both hot and cold water applications. PEX is also less likely to burst in freezing conditions compared to rigid piping materials.

By acknowledging that all these materials are commonly used in residential plumbing, it reinforces the versatility and variety available to plumbers when selecting the best option for