Cast iron pipe cracked and need repair

[Jay Lee]

Good afternoon, I have an older home built in the 1950s in phoenix. There was some backup of water that went from the shower and then into the bedroom next door. Have had multiple camera inspections of my pipes, and they show a crack in the cast iron pipe which caused the backup. Was looking for advice on how to repair. Was thinking of going with pipeliner, and googled some companies online. Rather than digging up the pipes and putting in new ones, the pipeliner is where they coat the inside of your pipes with a new pipe lining. Anyone have recommendations for which way to go, pipelining versus digging up the pipes. Digging up the pipes would require tearing up the flooring and tenant also cannot live inside while they do this.  

Therefore was thinking of going with pipeliner. Has anyone had experience with companies in Phoenix, found one called NuFlow  and in particular was looking for anyone who has had experience good or bad with this company. Thank you and have a great day!