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Picote Epoxy vs UV Inversion CIPP: Sewer Line Repair Comparison

cnmAdmin2030
May 8, 2025

When it comes to repairing damaged sewer lines, advancements in trenchless technology have provided property owners with multiple options. Two popular methods are Picote Epoxy Coating and UV Inversion Cured-in-Place Pipe (CIPP). While both are effective for different situations, each method has its unique advantages and disadvantages. In this blog, we’ll dive into how these methods work, compare their benefits and drawbacks, and discuss when to choose one over the other.

What is Picote Epoxy Coating?

Picote epoxy coating is a trenchless pipe repair technique that uses a specialized brush or spinner head to apply an epoxy coating directly to the interior of a pipe. This method creates a semi-structural, corrosion-resistant layer inside the pipe without the need for extensive digging. The epoxy coating reinforces smaller cracks and restores the integrity of the pipe, making it a versatile solution for certain types of damage.

Advantages of Picote Epoxy Coating:

1. Semi-Structural Repairs: Suitable for repairing smaller cracks, corrosion, and worn surfaces while reinforcing the pipe’s structural integrity.
2. Precision: Allows for targeted repairs on specific sections of the pipe.
3. Minimal Disruption: Requires little to no excavation, preserving landscaping and infrastructure.
4. Cost-Effective for Small Areas: Perfect for smaller jobs or spot repairs, as it doesn’t require a full pipe relining.

Disadvantages of Picote Epoxy Coating:

1. Not for Severe Structural Issues: May not be ideal for pipes with large collapses or major deformation.
2. Application Time: The process can be time-intensive for larger areas, as multiple layers may need to be applied.
3. Thickness Constraints: While semi-structural, the coating may not provide the same level of reinforcement as a full relining.

What is UV Inversion CIPP?

UV Inversion CIPP (Cured-in-Place Pipe) is a trenchless pipe repair method where a resin-saturated liner is inserted into the damaged pipe using air or water pressure. Once the liner is in place, UV light is used to cure and harden the resin, forming a new, seamless pipe within the old one.

Advantages of UV Inversion CIPP:

1. Structural Repairs: Provides significant reinforcement, making it ideal for pipes with severe structural damage or deformation.
2. Speed: The UV curing process is faster than traditional heat or water curing, reducing downtime.
3. Durability: Creates a jointless, corrosion-resistant pipe with a lifespan of 50 years or more.
4. Wide Applicability: Suitable for larger pipes and extensive repairs.

Disadvantages of UV Inversion CIPP:

1. Higher Cost: The upfront cost is typically higher than epoxy coating, especially for small repairs.
2. More Equipment-Intensive: Requires specialized UV curing equipment, which may limit availability in some areas.
3. Preparation Requirements: The pipe must be thoroughly cleaned and free of obstructions before installation.

When to Choose Picote Epoxy Coating

Picote epoxy coating is an excellent choice for:

• Semi-Structural Repairs: Addressing smaller cracks, corrosion, and surface wear while reinforcing the pipe’s strength.
• Small-Diameter Pipes: Ideal for smaller pipes or targeted repairs in residential and light commercial settings.
• Cost-Conscious Repairs: When the damage is minor, and a cost-effective solution is required.
• Accessibility Constraints: When it’s challenging to maneuver larger equipment into place.

When to Choose UV Inversion CIPP

UV Inversion CIPP is better suited for:

• Severely Damaged Pipes: Repairing pipes with major structural issues, such as deformation or collapses.
• Large-Scale Repairs: Addressing extensive damage over longer pipe runs.
• High-Durability Requirements: When a long-lasting, fully structural solution is needed.
• Time-Sensitive Projects: Projects where faster curing is a priority.

Summary: Choosing the Right Method

Conclusion

Both Picote epoxy coating and UV Inversion CIPP offer excellent solutions for trenchless pipe repair, but the right method depends on the specific needs of your sewer line. For smaller cracks and cost-effective solutions, Picote epoxy coating provides a durable, semi-structural option. For structural repairs or larger-scale projects, UV Inversion CIPP delivers unmatched durability and speed.

At Carolina Relining Solutions, we specialize in both methods and can help you determine which solution is best for your property. Contact us today at crscharleston.com to schedule an inspection and let our experts provide you with the most effective, long-lasting repair option for your needs.