Case Study: Old City Hall


  • A vertical storm drain began to leak and many offices had to be relocated as the water damage was repaired.
  • 20 linear feet lined in 3 nights using only three access holes

Benefits of Nu Flow Solution:

  • Ontario Pipe Lining was engaged by a mechanical contractor who held the maintenance contract with the city of Toronto.
  • OPL cleaned and lined 120 linear feet of 4” vertical cast iron storm drain.
  • The only access that was needed was on the 13th floor, the 7th and 3rd floor so the debris could be removed.
  • The work was completed after hours in 3 days