In the early days of our growth, the construction on pipes and drainage structures was very much the domain of craftsman and artisans. Pipes or culverts were built by hand with local materials, and the techniques used and designs created were unique from place to place. Some structures are so well made that even 200 years later, we can do little to improve their design or function, others though, not so much.
When it comes to rehabilitation solutions for these kinds of structures and pipes, it can be difficult to work with the existing materials. This is where the slip lining process can be a valuable tool.
Slip lining is a method of Sliding or “Slipping” a new pipe inside the old pipe. The materials used to perform this work are quite advanced and provide a maximum return for their use. After the new pipe is slid into the old structure it is grouted and filled to stabilize the existing pipe. What is left is a smooth and uniform pipe that will last a long time.
The major benefits of slip lining over other rehabilitation techniques include;
- Relatively inexpensive compared to CIPP
- Very fast installation and rehabilitation
- Very quick Preparation Compared to CIPP or Spray on
- Very forgiving of Pipe related issues, Minimal disturbance of existing structures.
- Relatively simple process with few roadblocks to a clean end result.
However to balance these benefits there are some downsides as well;
- Reduced overall pipe size
- Large amounts of fill may be needed for unusually shaped structures
Let us look at your project and see if slip lining is the answer.