What are the common methods used for pipe liner repair?

Common methods used for pipe liner repair include spot repairs, cured-in-place pipe lining, pipe bursting, and slip lining. Spot repairs involve fixing specific damaged areas, while cured-in-place pipe lining involves inserting a resin-coated liner into the pipe and curing it in place. Pipe bursting involves breaking the existing pipe and pulling a new one through, and slip lining involves inserting a smaller pipe into the existing one.