Tree roots can wreak havoc on drains and sewer lines if unchecked. As trees’ root systems expand, searching for water and nutrients, they often enter cracks and openings in underground piping.
Once inside pipes, tree roots can grow thickly along the interior surfaces. This root growth constricts drain flow over time, sometimes causing partial or complete blockages that stop water from flowing through the system.
Blocked drains can result in backed-up sewage, flooded basements, and costly water damage to homes and property. This blog post will discuss how tree species’ roots commonly invade drain systems and look at practical solutions for removing existing root blockages and preventing future problems. Proper drain maintenance and root barrier installation are crucial to keeping pipes flowing freely without tree root obstruction.
Common Issues Tree Roots Cause in Drain Systems
Some of the most common issues tree roots cause in drain systems include partial and complete blockages. As the roots grow inside the sewer pipes, they can wrap themselves around the interior walls and gradually choke off the flow space inside the pipe.
Over time, this restricted flow can lead to a wholly or partially blocked drain where water can no longer pass through. Other issues tree roots may cause are cracking and lifting of drain pipes.
Large, fast-growing trees are the biggest contributor to root growth in drains. Tree roots penetrating deep within the drain are called ‘anchor roots'. Aggressive root growth from the inside can exert pressure that cracks or breaks brittle pipes. Roots may also break through weaker sections of the piping as they grow.
This results in uneven surfaces, wavers, and leaking joints. If left unchecked, cracking and damage to underground pipes can accelerate pipe deterioration.
Signs Tree Roots May Clog Your Drains
Homeowners should look for critical signs indicating invasive tree roots and clogging drain systems. Slow drain flow in sinks, tubs, or toilets is a classic symptom.
Tree roots reducing the interior pipe diameter can significantly impede water flow. Backups and overflowing drains or traps are another red flag, as constricted pipes cannot handle average water volume. You may also notice gurgling or bubbling noises from trapped air in the drain lines.
Finally, sorting through piles of woody debris or roots pulled from vent stacks or cleanouts during snaking operations provides visual confirmation of intruding roots. Addressing these signs early before a complete tree root blockage can save homeowners a lot of hassle and repair costs.
Preventing Root Intrusion in Drains
Removing existing tree roots from drain systems can be challenging but is essential to restore proper flow. Several tree root removal methods are commonly used:
Mechanical snaking
A powered drain cleaning snake with a rotating steel blade or chain can cut through roots as it enters the pipe. It may require multiple passes to completely clear extensive root growth.
Hydrojetting
High-pressure water spray is directed into the plumbing pipes to break up and flush out loosened roots. This method is effective for light to moderate root build-up.
Camera inspection
Inspection cameras allow plumbers to identify root locations visually for targeted cutting or removal, helping to determine needed repair work.
Pipe bursting or replacement
For severely collapsed pipes completely engulfed in dense roots, pipe bursting or pulling a new section may be more cost-effective than multiple root-cutting attempts. To avoid regrowth, remove tree roots from the source.
Proper removal is essential, but homeowners should prevent future intrusion with physical root barriers or maintain proper pipe separation from trees.
Removing Existing Root Blockages in Drains
Removing root blockages in drain systems can help restore normal flow and avoid more severe issues like backups. The first step is using a hand-cranked or power-rotating steel auger-drained cleaner to break up and extract roots from the pipe opening.
Starting small and gradually increasing auger size may help dislodge tightly packed roots. However, in some cases, roots have grown too deeply or thickly wound inside to fully clear with mechanical tools.
Then, careful hydro-jetting with high-pressure water jets or powered root cutters on extension rods may be needed to cut through tenacious roots farther down the line. A video inspection camera can help locate remaining root fragments for targeted removal.
Stubborn blockages may require consulting a plumber experienced in removing extensive root build-up using specialised equipment or piping replacement if roots have seriously damaged the lines.
Techniques for Discouraging Further Root Growth
Once existing root blockages are cleared, ongoing maintenance is essential to discourage future growth problems. Installing a physical root barrier when repairing or replacing damaged sections of pipe can inhibit new roots from entering the area.
Opt for barriers made from materials like sheet metal or thick plastic that roots cannot penetrate. Routinely checking accessible cleanouts and vent stacks for signs of early root infiltration also allows for catching problems in the early stages.
Using root retardant chemicals that make roots’ growth toxic or repellent when applied around pipes also provides time-limited protection. Maintaining at least a few feet of space between nearby trees and drains is also critical. Finally, prompt removal of any fertiliser, pet waste or other organic debris near pipe areas deprives roots of the nutrients they follow.
When is Drain Replacement Necessary?
If tree roots have severely damaged or deformed sections of the drain pipe, replacement may be needed instead of continued repair efforts. Signs that warrant replacing the pipe include extensive cracking, holes, or crushing or collapse of more than 30% of the pipe wall.
Roots that have embedded themselves deeply into every crevice make thorough cleansing impossible. Pipe joints that no longer form a strong seal after repetitive root removal should be replaced.
Sections, where the interior diameter has decreased by half or more due to root build-up, cannot handle standard flow capacities. Pipes over 40 years old made of brittle materials like unglazed clay that cannot withstand sudden pressure from root growth inside also need replacement.
It’s best to consult a plumber to determine if a pipe can still function properly or needs replacement for long-term drainage and to prevent backups.
Choosing Drain Materials Resistant to Roots
When replacing drain sections, it is important to select pipe materials that are less appealing for roots to penetrate. PVC piping is a good choice, as roots find it difficult to adhere to the smooth interior surface.
Concrete piping is also a durable option, though joints still need protection. For the highest root resistance, consider pipe materials coated with polyvinylidene fluoride (PVDF) lining.
This creates a highly slick surface where roots slide off instead of attaching. Vitrified clay is dense and non-porous, making it difficult for roots to enter.
What to avoid are materials like cast iron and terra cotta that are porous and rough inside - roots can take advantage of these surfaces. Installing a separate root barrier adds a protective layer for any pipe material.
Working With Tree Roots Without Damaging Trees
When removing intrusive tree roots from drains, it’s essential to do so carefully without severely damaging the tree. Cut roots back only to where they enter the pipe.
Avoid cutting large structural roots that could compromise the tree’s stability. Use hand pruners or small excavation tools to cut roots rather than painfully tearing them out cleanly.
Always cut roots perpendicular to their direction of growth. In some cases, lifting and repositioning conduit away from roots rather than cutting may work.
Consider having an arborist on hand for large root removal near trees. Promptly backfill any excavations near trees to avoid leaving exposed roots vulnerable to drying out. Following these best practices helps correct drainage issues without negatively impacting valuable trees over the long run.
The Root of the Problem: Balancing Trees and Drains
Tree roots can pose severe problems for underground drain pipe systems if not adequately managed. From partial blockages to complete broken pipe destruction, roots have the potential to wreak havoc on drainage. However, following the strategies discussed, such as early prevention, effective root system removal techniques and replacement of compromised pipes when needed, can keep systems flowing freely.
Fixed Today offers complete drain cleaning and plumbing system repair services to assess and remedy root-related drain issues. Our fully licensed and insured team understands how to tackle even severe root blockages. If you notice any signs of blockage in the home’s plumbing system or suspect tree roots in nearby drains, contact a professional plumber to save your home and business from further damage. We aim to return your drains and pipes to complete the working order quickly and prevent future problems.
