Case Studies - March 2021

Case Studies - March 2021

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CIPP lining restores cast iron pipe at naval base

Problem: When a U.S. Naval base in San Diego was remodeling their restrooms, the contractor found a crack in the 4-inch cast iron pipe. 

Solution: Flow Infrastructure was contracted to use CIPP lining in order to avoid unnecessary jackhammering to the floor in the bathroom, office spaces and a conference room. The crews first inspected, then cleaned the buildup from inside the existing pipe. Once clean, the CIPP liner from Internal Pipe Technologies was inserted into the pipe from the toilet flanges and clean-outs.

Result: The contractor finished the restroom remodel and the liner now acts as a new pipe within the existing cracked cast iron pipe. The job was completed without demolition to the facilities. 888-478-6649;

Lining products enable pipe rehabilitation from roof

Problem: St. Prius Church in Providence, Rhode Island, had pipes that were severely deteriorated. They were hidden behind marble and granite, and encased in concrete. “It was a risky project,” says Marc Watson, owner of repair contractor Royal Flush. “We didn’t know what we were going to find behind the walls.”

Solution: They were able to access the pipes from the roof. They cleaned the pipes out with their Picote Maxi Miller, and used Picote Premium Original and Premium Cyclone Chains to prepare/descale the cast iron pipe. Once cleaned and prepared, Royal Flush used their Max LinerDrum to shoot the CIPP liners. Watson commented that the Max LinerDrum “was ideal to get up on the roof, due to the detachable wheel base, extendable carrying handles, compact size and weight. And, Maxliner’s WovoLiner made it possible for us to easily line the pipes, due to its flexibility. The pipes had multiple 90-degree bends.” Royal Flush lined 500 feet of 4-inch diameter pipes with Max WovoLiner and MaxPox Resin. WovoLiner is a nonwoven, circular looped PE, uniquely bonded to a seamless, impermeable PU coating.

Result: The church had received a quote from a plumber to fix the pipes by cutting through the marble, granite and concrete. With the ability to access the pipes from the roof, there was no disruption to the interior of the church and they saved the church over $300,000. 877-426-5948;

Historic castle benefits from lining system

Problem: The Sorg Mansion, built in 1887 in Middletown, Ohio, has old cast iron pipes that were corroded and were deteriorating due to age. There was leaking from the fourth floor bathroom down to the basement. Tearing up the walls and replacing the pipes would mean destroying the history of the beautifully painted ceilings and walls. 

Solution: All Drains Drain Cleaning and Plumbing Repair surveyed the situation and used Pipe Lining Supply’s Quik-Coating System for repairing drain, waste and vent pipes. The first step was pipe cleaning and descaling the pipe where they used a Renssi High-Speed Machine at a pulled toilet for the access point on the fourth floor. They successfully coated around 80 feet of vertical and horizontal pipes down to the basement. It took six passes using Quik-Coating’s Polyurea resin. Each pass applies 0.5 mm of pipe coating, and each pass took only 5 minutes of dry time between coats.

Result: Once they were finished with the six passes, the pipe had a 3 mm “like-new” pipe inside the old pipe. The bathroom is fully functional, walls and ceilings were not torn into, and the integrity of the building was preserved. This was part one of four phases expected to restore all the pipes in the historical mansion. 888-354-6464;  


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