10 Differences Between upvc and cpvc


Are you confused between uPVC and CPVC and wondering which one to choose for your construction needs? In this article, we will explore the differences between uPVC and CPVC, their uses, and examples to help you make an informed decision. So, let’s dive in!

What is uPVC?

uPVC, also known as unplasticized polyvinyl chloride, is a type of plastic material that is widely used in the construction industry. It is known for its durability, strength, and resistance to various environmental factors. Unlike traditional PVC, uPVC does not contain any plasticizers, making it more rigid and stable.

Examples of uPVC

uPVC is commonly used in the manufacturing of window frames, doors, pipes, and gutters. Its excellent insulation properties make it an ideal choice for energy-efficient windows and doors. uPVC pipes are widely used for plumbing and irrigation systems due to their chemical resistance and long lifespan.

What is CPVC?

CPVC, or chlorinated polyvinyl chloride, is a thermoplastic material that is derived from PVC. It is made by chlorinating the PVC resin, which enhances its heat and chemical resistance properties. CPVC is known for its ability to withstand high temperatures, making it suitable for hot water pipes.

Examples of CPVC

CPVC pipes are commonly used for transporting hot water in residential and commercial buildings. They are also used in industries that require handling corrosive chemicals, such as laboratories and chemical processing plants. CPVC fittings and valves are used in plumbing systems to ensure a reliable and leak-free connection.

Differences between uPVC and CPVC

Difference Area uPVC CPVC
Composition uPVC is unplasticized and does not contain any plasticizers. CPVC is chlorinated and contains plasticizers.
Temperature Resistance uPVC has a lower temperature resistance compared to CPVC. It is not suitable for hot water applications. CPVC has a higher temperature resistance and can handle hot water up to 200°F (93°C).
Chemical Resistance uPVC is chemically resistant to most acids, alkalis, and salts. CPVC has better chemical resistance and can withstand a wider range of chemicals, including acids and bases.
Pressure Rating uPVC has a lower pressure rating compared to CPVC. CPVC has a higher pressure rating and can handle higher pressure applications.
Fire Resistance uPVC has a good fire resistance and is considered self-extinguishing. CPVC has better fire resistance properties and is classified as a fire retardant material.
Cost uPVC is generally less expensive compared to CPVC. CPVC is more expensive due to its additional chemical treatment and higher temperature resistance.
Installation uPVC pipes and fittings are relatively easier to install. CPVC pipes and fittings require specialized solvent welding for proper installation.
Uses uPVC is commonly used for window frames, doors, and plumbing systems for cold water applications. CPVC is used for hot water pipes, chemical handling systems, and industrial applications.
Longevity uPVC has a long lifespan of 25-30 years. CPVC has a similar lifespan and can last up to 30 years.
Flexibility uPVC is rigid and less flexible compared to CPVC. CPVC is relatively more flexible and can be used for bending applications.


In conclusion, uPVC and CPVC are both versatile materials used in the construction industry, but they differ in composition, temperature resistance, chemical resistance, pressure rating, fire resistance, cost, installation method, and specific applications. It is important to consider your requirements and the intended use before choosing between uPVC and CPVC.

People Also Ask

Q: What are the advantages of uPVC?

A: uPVC offers excellent insulation, durability, and weather resistance. It is low-maintenance, termite-proof, and provides enhanced energy efficiency.

Q: Can I use uPVC pipes for hot water?

A: No, uPVC pipes are not suitable for hot water applications. They may deform and weaken when exposed to high temperatures.

Q: Is CPVC safer than uPVC?

A: CPVC is considered safer for use in hot water applications as it can withstand higher temperatures without leaching harmful chemicals.

Q: Can I use uPVC for indoor plumbing?

A: Yes, uPVC pipes and fittings are commonly used for cold-water plumbing systems in residential and commercial buildings.

Q: How long do CPVC pipes last?

A: CPVC pipes have a lifespan of around 30 years when installed properly and used within the recommended temperature and pressure limits.

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