What are sewer stacks and why they deteriorate
Sewer stacks are vertical pipes responsible for transporting wastewater through a building. Over time, they deteriorate due to aging, temperature variations, structural movement, and constant exposure to waste and chemicals.
In many older buildings, it is common to find cracks, joint failures, or loss of sealing, leading to leaks and unpleasant odors.
Common warning signs
Some indicators that a stack may require intervention include:
- Persistent sewage odors;
- Damp patches near pipe routes;
- Leaks between floors or apartments;
- Recurring blockages;
- Unusual pipe noises.
How epoxy lining works
Epoxy lining involves applying a resin coating inside the pipe, creating a new internal layer that improves sealing and protects against corrosion and infiltration.
The process typically includes cleaning, drying, and controlled application to ensure proper adhesion.
This allows rehabilitation without breaking walls or replacing the entire pipe.
When epoxy is suitable
Epoxy lining is suitable when the pipe is structurally stable but has sealing issues or surface degradation.
- Sealing microcracks and joint leaks;
- Reducing minor infiltration;
- Extending pipe lifespan;
- Avoiding invasive works.
Limitations
Epoxy lining does not solve major structural problems such as collapsed sections, severe deformation, or significant misalignment.
In such cases, structural solutions like CIPP lining or localized replacement may be required.
The importance of CCTV inspection
A CCTV inspection is essential before any intervention to assess the real condition of the pipe and determine whether epoxy is appropriate.
Advantages of no-dig rehabilitation
- Fast execution;
- Minimal disruption;
- No demolition required;
- Controlled costs;
- Suitable for occupied buildings.
Conclusion
Epoxy lining is a practical solution for sealing and surface deterioration issues, but it must be applied based on proper technical diagnosis.
At REVIPOX, we assess each case through CCTV inspection and recommend the most suitable solution, ensuring effective and reliable results.
