A lot of Brockton's housing stock sits on sewer laterals laid decades ago in clay pipe, jointed in short sections. Those joints are exactly where tree roots find their way in — and once a root gets a foothold, it doesn't take long for a minor gap to become a real blockage.
Why Clay Joints Are Vulnerable
Clay pipe sections are joined every few feet, and those joints can shift slightly over decades of ground movement and freeze-thaw cycles common in Massachusetts. Even a small gap at a joint releases enough moisture to attract nearby tree roots, which then grow into the gap and widen it over time.
How Root Intrusion Progresses
A root growing into a joint doesn't just block flow on its own at first — it catches paper, grease, and debris passing through the line, and that buildup is usually what causes the first noticeable backup. Left alone, the root keeps thickening and the blockage gets worse each cycle.
Cleaning vs. Repair
Cutting the roots back with a cabled cutting head or hydro jetting clears the immediate blockage, but it doesn't fix the gap at the joint — roots typically grow back within one to two years unless the joint itself is repaired or that section of pipe is replaced. Cleaning is the right first step; whether repair is also needed depends on how damaged the joint has become.
How to Know If This Is Your Situation
A camera inspection is the only reliable way to confirm root intrusion versus another cause of recurring backups. If a lateral has cleared and re-clogged more than once in the same general area, root intrusion at a clay joint is one of the most common explanations in this housing stock.
Recurring backups in the same spot? Our sewer line cleaning service clears root intrusion the right way, and can flag when a section needs more than cleaning.