What glue is best for UPVC pipe?

Rojan Ahmadi
7 min readOct 31, 2023

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When it comes to working with UPVC (Unplasticized Polyvinyl Chloride) pipes, selecting the right adhesive is paramount. Whether you’re a seasoned professional or a DIY enthusiast, using the best glue for UPVC pipes ensures a secure and durable connection. In this comprehensive guide, we’ll explore the various types of UPVC pipe glues available, how to use them effectively, and some essential tips to consider during your project.

Understanding UPVC Pipe and Its Unique Characteristics

Before we delve into the world of UPVC pipe glues, it’s crucial to understand the material you’ll be working with. UPVC is a versatile, rigid plastic material used extensively in the construction industry for various applications, including plumbing, irrigation, and drainage systems. What sets UPVC apart are its remarkable properties, making it an ideal choice for many projects:

1. Durability and Corrosion Resistance

UPVC pipes are highly resistant to corrosion, making them an excellent choice for both above-ground and below-ground installations. Unlike metal pipes, UPVC pipes won’t rust or deteriorate when exposed to moisture or aggressive chemicals, ensuring long-lasting performance.

2. Lightweight and Easy to Handle

UPVC pipes are lightweight, making them easy to transport and install. This characteristic is particularly advantageous for DIY projects where maneuverability is essential.

3. Smooth Interior Surface

The smooth interior surface of UPVC pipes minimizes friction and allows for efficient water flow. This feature is especially beneficial for plumbing applications, ensuring consistent water pressure and reduced clogs.

4. Cost-Effective

UPVC pipes are cost-effective, making them a budget-friendly choice for various applications. When properly installed, UPVC systems can provide reliable service for years, reducing maintenance costs.

5. Eco-Friendly

UPVC is a recyclable material, which means that it’s an environmentally responsible choice. By using UPVC pipes, you contribute to sustainability efforts and reduce your carbon footprint.

The Importance of Using the Right Glue

To harness the full potential of UPVC pipes and their unique characteristics, it’s crucial to choose the appropriate adhesive. The right glue ensures a secure, leak-free, and long-lasting connection between pipe and fittings. Using the wrong adhesive can lead to weak joints, leaks, and project failures. Let’s explore the different types of UPVC pipe glues and their respective applications.

Types of UPVC Pipe Glues

There are two main types of UPVC pipe glues: solvent cement and primer. Understanding the differences between these adhesive types is essential for selecting the right one for your project.

1. Solvent Cement

Solvent cement, also known as PVC cement or PVC adhesive, is the most commonly used type of glue for UPVC pipes. It is specially formulated to bond UPVC pipes and fittings securely. Solvent cement typically consists of a mixture of solvents and UPVC resin.

How to Use Solvent Cement:

  1. Clean the Surfaces: Ensure that both the pipe and fitting surfaces are clean and free of dirt, grease, and any foreign particles. Use a clean cloth or abrasive paper for this purpose.
  2. Apply the Solvent Cement: Brush a generous amount of solvent cement onto both the pipe and the fitting surfaces. Make sure to apply an even layer, covering the entire area that will be joined.
  3. Join the Parts: Quickly join the pipe and fitting, applying a slight twisting motion as you push them together. This helps to evenly distribute the cement and create a strong bond.
  4. Hold in Place: Hold the pipe and fitting together for a short period to allow the solvent cement to set. The setting time varies depending on the manufacturer’s instructions.
  5. Cure Time: The joint may need some time to fully cure. Follow the manufacturer’s recommendations for the specific solvent cement you are using.

2. Primer

Primer, also known as PVC primer or pipe primer, is a complementary adhesive used in combination with solvent cement. It’s not used to bond the pipe and fittings together but serves a crucial purpose in the process. Primer is a purple or clear liquid that cleans and prepares the surface of the UPVC pipe and fitting.

How to Use Primer:

  1. Clean the Surfaces: As with solvent cement, start by ensuring that the surfaces of the pipe and fitting are clean and free of contaminants.
  2. Apply the Primer: Apply a thin, even coat of primer to the surfaces where the joint will be made. The primer helps remove any remaining impurities and softens the UPVC material slightly.
  3. Join the Parts: Once the primer is applied, you can immediately follow the steps for using solvent cement to bond the pipe and fitting together.

Choosing Between Solvent Cement and Primer

The choice between solvent cement and primer depends on your specific project and the requirements of your local building codes. In many cases, using both solvent cement and primer is recommended for a secure and durable connection. However, certain situations may call for using one type of adhesive over the other.

If you’re working on a plumbing or pressurized water system, using both solvent cement and primer is typically necessary. These systems require strong and leak-free joints to ensure water supply reliability. In contrast, for non-pressurized systems, such as drainage or irrigation, you may use solvent cement alone in some cases.

Always consult your local building codes and the manufacturer’s recommendations to determine the right adhesive for your project. Using the correct adhesive is crucial to meet safety and performance standards.

Tips for Choosing the Best UPVC Pipe Glue

Selecting the right UPVC pipe glue involves considering various factors to ensure a successful and long-lasting connection. Here are some essential tips to help you make the best choice:

1. Check Local Building Codes

Before purchasing any UPVC pipe glue, consult your local building codes and regulations. These codes often specify the types of adhesives and installation methods that are acceptable for different applications. Adhering to local codes is crucial to ensure the safety and compliance of your project.

2. Consider the Pipe Size and Application

The size of the UPVC pipes and the specific application are critical factors in choosing the right adhesive. For larger pipes or high-pressure systems, you may need a stronger and more robust adhesive. Smaller pipes and non-pressurized systems may allow for a more flexible choice.

3. Use Compatible Products

Always use adhesive products that are compatible with UPVC materials. Using products from the same manufacturer or those explicitly designed for UPVC ensures a reliable bond. Mixing different brands or using incompatible adhesives can lead to weak joints and potential leaks.

4. Follow Manufacturer’s Recommendations

Each adhesive product comes with specific instructions provided by the manufacturer. These instructions include information on surface preparation, application methods, curing times, and storage. Following the manufacturer’s recommendations is essential to achieve the best results.

5. Clean and Prepare Surfaces Properly

The success of any UPVC pipe joint relies heavily on the cleanliness and preparation of the surfaces. Ensure that the pipe and fitting surfaces are free from dirt, grease, and any foreign particles. Use a cloth or abrasive paper to clean and roughen the surfaces as needed.

6. Perform a Dry Fit

Before applying the adhesive, it’s a good practice to perform a dry fit. This involves fitting the pipe and components together without any adhesive to ensure they align correctly and fit snugly. Once you’re satisfied with the fit, disassemble the components and proceed with adhesive application.

7. Work Quickly and Accurately

Solvent cement and primer have a limited working time before they start to set. Therefore, work quickly and accurately when applying these adhesives. Make sure you’re ready to join the parts as soon as the adhesive is applied to avoid complications.

8. Allow for Proper Cure Time

After joining the UPVC pipe and fitting, it’s essential to allow the joint to cure properly. The curing time can vary depending on factors like temperature and humidity. Be patient and follow the manufacturer’s recommendations for curing times before pressurizing or using the system.

9. Use Safety Precautions

When working with UPVC pipe glues, take necessary safety precautions. This includes wearing appropriate personal protective equipment (PPE) such as gloves and eye protection. Ensure proper ventilation in the workspace to avoid inhaling fumes.

10. Store Adhesives Properly

Proper storage of UPVC pipe adhesives is crucial to maintain their effectiveness. Store them in a cool, dry place, away from direct sunlight and extreme temperatures. Keep the lids tightly closed to prevent evaporation and contamination.

Top UPVC Pipe Glue Brands

Several reputable manufacturers produce high-quality UPVC pipe glues. Here are some well-known brands to consider for your project:

1. Oatey:

Oatey is a trusted name in the plumbing industry, known for its comprehensive range of solvent cements and primers. Their products are widely used by professionals and DIY enthusiasts for various UPVC pipe applications.

2. IPS Corporation (Weld-On):

Weld-On, a brand under IPS Corporation, offers a wide selection of solvent cements, primers, and accessories. Their products are designed to provide reliable and durable bonds for UPVC pipes.

3. Christy’s:

Christy’s is another reputable manufacturer that specializes in adhesive products for plumbing and irrigation systems. They offer a range of solvent cements and primers suitable for UPVC pipes.

4. Hercules:

Hercules, a brand by Oatey, provides a variety of adhesive solutions for UPVC pipes. Their products are known for their quality and durability, making them a popular choice among professionals.

5. RectorSeal:

RectorSeal offers a broad range of adhesives and sealants, including those designed for UPVC pipes. Their products are engineered to ensure strong and leak-free connections.

Conclusion

Selecting the best glue for UPVC pipes is a crucial step in ensuring the success of your plumbing, irrigation, or drainage project. Understanding the unique characteristics of UPVC and the differences between solvent cement and primer is essential. By following the tips and recommendations provided in this guide, you can make an informed choice and achieve secure and long-lasting connections for your UPVC pipe systems.

Remember that adhering to local building codes and manufacturer’s instructions is paramount. Whether you’re a professional plumber or a DIY enthusiast, the right adhesive will help you complete your project with confidence, knowing that your UPVC pipes are securely bonded for years to come.

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Rojan Ahmadi

بیش از ۷ ساله که در حوزه تجهیزات استخر، لوله استخر و لوله و اتصالات UPVC مقالات تخصصی مینویسم و از سال ۹۷ با اطلس موج آبتین، همکاری دارم. (atlasmouj.com)