Sewer repairs and replacements can be among the heftiest investments you will make when it comes to a plumbing initiative on your home or commercial property. But when trenchless options are in play, it changes the way things are handled. Trenchless sewer pipe lining involves the relining of old pipes with a durable liner that forms into a new pipe inside the old ones (Cured In Place Pipe Lining). The first step after an inspection and cleaning is to cut a piece of liner that is the length of the portion of the sewer pipes that need replaced. A resin solution is then coated on the inside of the liner and smoothed out so that it is evenly throughout. The liner is pushed through the pipes from start to finish in perfect position. Then, it is steamed and inflated to mold to the old pipes. Once it hardens, its tough enough to block off tree roots that try to intrude, it seals cracks that were in the old pipes, and it will act as a new pipe inside of the old one. The liner and new portions are properly sealed to any openings and other pipes and holes are cut where drain pipes connected. Then the process is completed.