Spiral Wound Pipe Lining involves inserting a flexible liner strip inside the existing pipe and sealing the edges of the strip together to form a liner inside the pipe. The liner essentially forms a smooth surface inside the existing pipe, restoring it to near-new condition.
The work involves the following steps:
- Remove roots from the pipe and flush debris from the pipe.
- Set up a sewer bypass system, if necessary, to re-route wastewater to other nearby pipes during the pipe lining process.
- Lower a winding machine into the manhole.
- Insert the liner strip into the sewer pipe through a manhole from a spool at the surface.
- Use the winding machine to seal the edges of the strip together and gradually build a liner inside the pipe.
- Push or pull the liner into place as it is formed by the winding machine.
- Open and reinstate sewer service lateral connections that were covered by the pipe lining.
- Fill any spaces in the liner with grout.
- Remove the bypass system, if any.
- Conduct quality control inspections.