Most facilities/structures built prior to the early 1970s have sewer lines composed of primarily cast iron and clay. These lines are subject to cracking and rusting out at the bottom, which leads to root intrusion at the joints and cracks.
Root intrusion into sewer pipe systems is reported to cause 50% of all sewer blockages. Interference of trees into sewer systems is likely to occur in older systems and in cracked pipes. Factors that contribute to damage include older pipes with joints, shallow pipes, small-dimension pipes and fast-growing tree species. Cost associated with caring for root intrusion in the past has been expensive and laborious and unfortunately, is rarely a long-term fix.
Solution: Nu Flow structural lining technologies protect against further intrusion in joints and cracks. Because of the nature of root intrusion, it is best to reinforce and protect pipes before major intrusions have taken place.
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