Cementitious Storm Sewer Relining has become more popular in the past few years in CMP storm sewer pipes.  These pipes are deterorating across the country at the bottom inverts.  They are large in diameter and are typically only about 100 feet in length.  These line sections are usually not cost-effective to be excavated and replaced or relined using the polyurethane relining materials.

The work involved in the Cementitious Relining is an extensive practice, but the cost of the cement material makes it still more cost effective than anything else.

• First bypass must be set up to dewater the line section and route the water somewhere else.
• We follow this up by cleaning the line section.  Often times these sewer are access points for creeks and other water ways.  Often times it can several days to clean one line section.
• Third we will prep the storm sewer with cementitious patch materials.  The purpose of this is to flatten out the bottom and remove any rust spots, or holes in the pipe.
• Fourth we are finally ready for relining.  Depending on the size of the pipe or the situation we will either spray the pipe or pull a spincaster machine through.   There are videos on the Strong Seal website.  Typically all line sections are relined at 1.5″ to 2″ in thickness.
• Finally we will post televise the line section and provide the deliverables to the engineer.