Can Multi be used in any sort of pipe?
No. Sometimes the effluent that is being discharged can not be matched to a suitable resin system. When there are large concentrations of Citrus acid, Nitrates, pulp and other toxic effluent; a specific type of resin or epoxy must be utilized within the liners make up. In some cases pipes are used to discharge extremely hot water. Once again an analysis must be completed by the owner to sufficiently gain the proper resin for the liner.

Some pipes are not always round. They may be elliptical, box , rectangular, half mooned, double barreled or in some cases the pipe has lost its’ rounding by a partial collapse, where the crown of the pipe has begun to fall in. The measuring of these pipes has to be exact, and in some cases this may be impossible. If it is impossible do not attempt lining. Guess work is for armatures. There are some methods that are out there such as sonar or laser profiling. These are very good methods that can be used, although there is nothing better than going into the manhole and physically measuring the inside diameter of the pipe. Remember to practice manhole entry safely.

Pressure pipes: Pressure pipes can be lined successfully with limitations. The Multiliner system has performed successfully in 80 PSI pipes in the past. Typically these lines are limited to Potable water and gas pipes, although the 80 PSI pipe was a sewer force main. The liner must be designed by an accredited engineer. Although the Multiliner system does not cover potable water systems, there are other CIPP products that do work in this application, that are NSF 61 approved and further to that WRc approved. The use of UV Light is recommended for this method over steam.

Multiliner is primarily used to line sanitary and storm pipe, although we have been used in vent shafts, boiler feed lines, and a myriad of different applications. Multiliner can be utilized in 6 inch (150mm) to 48 inch (1200mm).

What are the advantages of Fiberglass reinforced liners over felt liners?
The Multiliner product has some distinct advantages over felt. One of the large issues that is of concern at the present, is our environment. Our product is encapsulated within a two bag system. The first bag is an inflation bladder which has a barrier designed to keep the styrene content from leaching or gassing from the resin impregnated liner. The second bag encapsulates the liner and has the same barrier design as the first. This allows the liner to cure off without having styrene enter the collection system.  

Because of Multiliner’s immense strength, the liner is much thinner than what a felt liner would be. This works two ways. Typically, if there is less material, there is less cost, and secondly if there is less material, it should take less effort to cure the liner. There is a cost savings everywhere you look.