Tree roots are something of beauty but not when they take over and cause havoc on the sewer lines! Did you know that each city has it's own set of rules on who is responsible for the costs associated with pipe replacement and excavation? Poly-B Ltd is highly experienced and knowledgeable in this area. 705-984-6249. Excavation, pipe replacements and sewer line replacements in Barrie and Orillia. 705-984-6249. Visit us www.PolyBPlumbing.com