Roots in the sewer line

[Manpreet Singh]

The toilet on the second floor in the master bedroom was plugged. The plumber said that it is roots in the sewer line about 35 feet into the line. It looks as though the pipe has broken and is allowing roots to grow in the line. 

• Any suggestions on how to fix this?
  
• Any ideas whether HOA or home insurance or home warranty would cover this?
• I'm trying to locate the blueprints for my model to see whether the sewer line is running under the cement slab of the house or alongside the house. Any ideas on who would have a copy of the blueprints? 

Thank you for whatever help you can provide!

PS: I have a glen plan 3 home.