If you’re renovating and dealing with rotted old pipes, it’s the perfect time to upgrade your plumbing system. Two common options are CPVC and UPVC, but which one is right for your home?
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Understanding the Basics
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CPVC (Chlorinated Polyvinyl Chloride)
Designed for both hot and cold water, CPVC handles higher temperatures and is ideal for indoor water supply. -
UPVC (Unplasticized Polyvinyl Chloride)
More rigid and used mainly for cold water lines, drainage, and sometimes external plumbing. It’s durable, affordable, and low-maintenance.
Main Differences
Feature CPVC UPVC Water Temperature Hot & Cold Cold only Use Case Internal plumbing Drainage, cold water, external Flexibility Slightly flexible Rigid Cost Higher Lower
*Which Should You Choose?*Go for CPVC if you’re replacing hot water lines or need long-term performance for drinking water.
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Choose UPVC for drainage, cold water lines, or external plumbing where heat resistance isn’t needed.
Final Thoughts
For most renovations, a mix of both works best — CPVC for indoor plumbing, UPVC for drainage. Always consult a professional plumber to make sure you’re choosing the right materials for your specific setup.