Root damage is common because drains are often close to gardens, hedges, and street trees. The problem can start small, then turn into repeated blockages, bad smells, and even flooding. Acting early makes repairs simpler and helps protect your home.
This article explains the main signs, the safest first steps, how a camera survey pinpoints the fault, and the repair options when a pipe is cracked or has started to collapse.
Signs your drains may have root damage
Repeated slow drainage is a common clue to look for. You might clear a blockage and feel relieved, only for the problem to return within days or weeks. That pattern often means something is catching waste deeper in the pipe, such as roots spreading across the flow.
Bad smells can also point to root damage. When roots block part of a pipe, wastewater may sit in place for longer, which increases odours. If the smell is stronger outside near an inspection cover or gully, it may suggest the issue is in the underground run.
Watch for changes after heavy rain. If your drains struggle more during wet weather, roots may be causing a restriction that cannot cope with extra water. This can show up as toilets flushing slowly, water rising in a shower tray, or gurgling from plugholes.
Outside signs can be easy to miss, but they matter. A patch of grass that stays greener, softer ground, or a small dip near the drain line can suggest leaks caused by root entry. As time passes, the soil can wash away around the pipe, which makes the problem worse.
What to do as soon as you suspect a problem
Reduce water use straight away. Try to avoid long showers, baths, and running appliances that send lots of water down the drain. This lowers the chance of a backup and can prevent wastewater from spilling inside or outside the home.
Keep note of what is happening and where. Write down which fixtures are affected, whether the issue is constant or comes and goes, and if rain makes it worse. Clear details help a local professional narrow down the fault and avoid wasting time.
Check the easiest access points to see if it is safe. Outside inspection covers can sometimes show whether water is moving freely, but do not force anything open or put yourself at risk. If you see a high water level in a chamber, that supports the idea of a blockage further along.
Avoid quick fixes, as these can cause extra trouble in the long run. Strong chemical cleaners may not reach roots and can make later work unpleasant or unsafe.
Home tools that poke at the blockage can also damage old pipework if used with too much force, especially if the pipe is already cracked.
How a CCTV drain survey finds the issue
A CCTV drain survey uses a small camera on a flexible cable to view the inside of your drain pipes. The camera travels through the line and sends live footage to a screen. This allows the problem area to be seen clearly instead of being guessed.
Roots are usually easy to spot on camera. They can look like fine hair strands at first, then thicker growth that forms a net across the pipe. The survey can show whether the roots entered through a joint, a crack, or a broken section.
A survey also reveals other issues that often come with root damage. It can show a pipe that has shifted out of line, a section that has flattened, or a build-up of grease and debris where roots have slowed the flow. This matters because clearing roots alone will not help if the pipe is already collapsing.
The results will help professionals plan the right repair for your drains. The survey can show how long the damaged section is, how severe the entry point is, and whether the pipe is still strong enough for lining. It can also help decide where access is best, which can reduce disruption and cost.
Clearing roots safely and effectively
Roots inside drains should be removed carefully, because rough methods can break fragile pipework. A common approach is mechanical cutting, where special rotating tools are used to cut roots back from inside the pipe. This restores flow without needing to dig up the garden straight away.
High-pressure water jetting is often used after cutting. The water flushes out loose root material and washes away stuck waste. It also helps clear the pipe wall so the drain can be inspected again to confirm how clean and open it is.
Clearing roots is only part of the solution. If the entry point is not sealed, roots will often return because the moisture is still there. This is why root removal is usually followed by a repair, such as lining, sealing a joint, or replacing a broken section.
Safety and hygiene matter as well. Wastewater can contain lots of harmful germs, so proper protective gear and correct disposal are always important.
A trained professional in your area also knows how to avoid pushing debris into a worse blockage and can check that water is flowing freely before finishing.
Drain Lining and Replacing sections of collapsed drains
Drain lining creates a new inner layer inside the existing pipe. A liner is placed through the damaged section and set in place, which seals cracks and gaps where roots entered. This can prevent regrowth because it blocks the moisture path that attracted the roots.
Lining works best when the pipe still holds its shape. If the drain is badly deformed, has missing pieces, or has fully collapsed, the liner may not fit or may not last. A camera survey is important here because it shows whether lining is a safe and strong option.
Replacing a section is more likely when roots have caused a collapse or the pipe has shifted badly. This involves digging to reach the damaged area, removing the broken pipe, and fitting new pipework with secure joints. It can be more disruptive, but it can also be the most reliable fix when the damage is severe.
The best outcome often combines steps. Roots are cleared, the pipe is inspected again, and then the correct repair is chosen based on what the camera shows. After repairs, sensible maintenance, like keeping grease out of drains and monitoring problem areas, can help reduce the chance of roots returning.
Struggling with a drain blockage in your household? We offer drain unblocking throughout Fleetwood, Blackpool and Lancashire. Let us help. Tru Flow Drainage is a drainage contractor that has been resolving drainage issues for local homes, businesses, and property developers for more than 25 years.
