The Full Sewer Pipe Repair Timeline

Stack of sewer pipes

How long does it take to replace a sewer line? This is one of the big questions many municipalities and pipeline construction companies ask themselves and companies like Sekisui SPR when evaluating spiral wound trenchless sewer pipe replacement

The answer to this pipeline question is complex. It will depend on the sewer line’s diameter, how damaged the pipeline is, how long the pipeline is, and what spiral wound pipeline repair method is needed. Yet, spiral wound pipeline repair and other trenchless methods take less time then dig-and-replace and are more eco-friendly.

Since the 1980s, when a sewer pipeline has degraded or needs repairs, one of the most efficient methods to restore the pipeline has quickly become spiral wound trenchless pipe replacement. This method is favored for several reasons, including its cost-effectiveness, ease of installation, and limited impact on the environment and community

This article will discuss the full sewer pipe repair timeline according to the spiral wound pipeline replacement method. 

The Complete Sewer Spiral Wound Pipe Repair Timeline

Below we have briefly discussed the timeline surrounding sewer pipe repair using the spiral wound method so that you can get a better idea of what to expect. 

Planning & Design

Once a pipeline is determined as needing to be renewed an engineer will need to determine which method(s) is most capable to renew the line. There are many criteria to consider; technology or construction cost, capability, design, etc. In this stage, SEKISUI SPR will gather details on the pipe and its condition to form a design proposal for the specific project. This will inform the parties involved in the project what Spiral Wound product best fits the application and how the Spiral Wound liner is to be constructed.


If the project is awarded to a Spiral Wound installer we move onto the actual construction portion of the timeline. Before the lining can begin, inspections of the sewer pipeline need to be conducted. Usually, inspectors will look for sewer pipeline collapse by identifying if any of the signs of pipeline collapse are present. During the inspection,pipeline contractors will evaluate the current condition of the pipeline. It will also be determined if any spot repairs are needed before lining.

Repair: Part One

After an inspection has been completed and plans are finalized, a team of trenchless sewer pipeline repair contractors will begin the repair process. Before discussing how a sewer line is repaired, you must understand what spiral wound pipe liner is. 

The spiral wound pipe liner is made of PVC strips (polyvinyl chloride or high-density polyethylene). These strips are used for sewer pipeline repair and are transported to the sewer line sites by truck in large spools. The spool size corresponds with the diameter and length of the sewer pipe that needs to be lined. 

After the contractors have cleaned the inside of the sewer pipe, they will feed the continuous strip of PVC from the spool to the winding machine below ground. 

Repair: Part Two

How the installation for the repair unfolds will differ based on the sewer pipe diameter and the type of mechanical equipment being used. If a smaller sewer pipeline diameter between 6 and 42 inches is being repaired, the PVC liner is constructed via a stationary machine that pushes the liner to the opposite access.

For larger diameter Spiral Wound projects, a machine that traverses the length of the pipe while constructing the liner is used. If the Spiral Wound method used is not a tight-fit system, then the annular space between the pipe wall and liner will need to be filled with grout. Once the ends are sealed, laterals (if present) are reinstated, grout (if necessary) is injected, the pipe will be ready for full service once again.

Choose Sekisui SPR for Your Sewer Pipe Repairs

It’s evident that trenchless spiral wound pipeline sewer repair is an involved but reasonably easy process that is less time-consuming than traditional sewer pipe repair solutions. The ingenious technological pipeline solution offered by Sekisui SPR is changing the way pipeline repair is completed in cities across the nation. 

Essentially, spiral wound sewer pipeline repair saves municipalities and companies time and money and ensures environmental degradation is avoided as much as possible. Sekisui SPR has different pipeline repair methods that offer clients versatility.

Although the spiral wound pipeline methods are perfect for repairing sewer lines, they are also ideal for culvert and storm drain repair. Should you want to learn more about the trenchless sewer pipe repair process or get an estimate of how long a spiral wound project would take to complete, you can contact Sekisui SPR to speak with a pipeline repair expert.

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