How to Repair a Drain Pipe

A broken drain pipe can be extremely disruptive to your property, especially if it is not inspected, repaired or replaced quickly. Left alone, damaged drains can lead to recurring blockages, leaks, flooding, bad smells, soft ground, pest activity and more expensive structural problems.

If you are searching for how to repair a drain pipe, the honest answer is: it depends where the damage is, how severe it is, and whether the pipe is still structurally sound. Some minor visible pipe issues may be suitable for a temporary DIY fix, but underground drain pipe repairs usually need a professional drainage engineer, a CCTV drain inspection and the right repair method.

For professional support, visit our drain repairs service page. That is the main page for booking drain repair work. This guide explains how the repair process works, when no-dig repairs may be suitable, and when excavation may be needed.

 

Can you repair a drain pipe yourself?

You may be able to carry out a temporary repair on a small, visible internal waste pipe leak if the pipe is easy to access and the issue is minor. For example, a small leak from a visible pipe under a sink may be temporarily managed with repair tape, a clamp or replacement of a simple fitting.

Underground drain pipes are different. If the damaged pipe is outside, below ground, under a driveway, beneath a garden or connected to the wider drainage system, DIY repair is usually not sensible. You need to know exactly where the damage is, what caused it and whether the pipe is cracked, displaced, blocked, leaking or collapsed.

Guessing at underground drain repairs is how small problems become bigger, messier and more expensive. The drain, being a pipe buried under the earth, does not give you much useful information from the surface.

 

How can you tell if a drain pipe needs repairing?

There are several signs that may indicate a broken, cracked or collapsed drain pipe. Some symptoms look like ordinary blockages at first, which is why recurring problems should not be ignored.

Common signs you may need drain pipe repair include:

• Slow drainage that keeps returning.
• Frequent blocked drains.
• Water pooling or puddling outside.
• Strong, unpleasant drain odours.
• Soft, damp or sunken ground around underground pipework.
• Gurgling noises from sinks, toilets, baths or showers.
• Increased pest activity.
• Visible cracks, rust, leaks or pipe damage.
• Sewage smells or wastewater backing up.
• Drain problems that get worse after heavy rain.

If even one of these signs sounds familiar, you may need a drain inspection or repair. If several are happening at once, it is worth arranging professional help quickly.

 

What causes drain pipes to break?

Drain pipes can become damaged for several reasons. Some problems build up slowly over time, while others happen because the pipe has moved, cracked or collapsed.

 

Tree root ingress

Tree roots can enter drains through cracks, open joints or damaged pipe sections. Once inside, they can grow through the pipework, trap waste and cause recurring blockages. Root ingress can also make existing damage worse.

 

Ground movement

Ground movement, settlement or heavy loads above the pipe can cause drains to crack, move out of alignment or collapse. This can happen under driveways, gardens, patios and older drainage systems.

 

Ageing pipework

Older drains may be more vulnerable to cracks, corrosion, displaced joints and structural weakness. Clay, cast iron, pitch fibre and older plastic pipework can all develop faults depending on age and condition.

 

Repeated blockages and pressure

Blockages caused by grease, wipes, food waste, silt or debris can increase pressure inside the pipework. Over time, repeated blockages may contribute to leaks, cracks and damage.

 

Poor installation or pipe gradient

If drains were installed with the wrong gradient, displaced joints or poor support, water and waste may not flow properly. This can cause repeated build-up and increase the risk of pipe damage.

 

How to fix a broken drain pipe outside or underground

If you suspect a broken drain pipe, the first step is usually a CCTV drain inspection. Underground drain problems are difficult to diagnose from the surface, so a camera survey is one of the most efficient ways to identify the fault.

A CCTV inspection involves inserting specialist camera equipment into the drainage system. This gives the engineer a close-up view of the pipe condition and helps identify problems such as cracks, leaks, displaced joints, root ingress, collapsed sections, blockages and scale build-up.

This matters because the best repair method depends on the type and severity of the damage. A small crack may be suitable for patch lining. A longer damaged section may need relining. A fully collapsed pipe may need excavation and replacement.

 

Popular drain repair methods

Common fixes for outside drain pipes include drain patching, drain lining, relining and excavation. No-dig repair methods can often avoid unnecessary disruption, but they are only suitable when the pipe is stable enough to be repaired from the inside.

 

Drain patching

Drain patching is often used for small, localised areas of damage. If the drain has a minor crack, small hole, leaking joint or limited root damage, a resin patch may be applied inside the existing pipe.

The patch is positioned over the damaged area, inflated against the inside wall of the pipe and left to cure. Once cured, it forms a watertight repair over the affected section.

Patch lining is useful because it targets the damaged section without digging up the whole pipe.

 

Drain lining or relining

Drain lining, also called drain relining, is a no-dig repair method used to create a new lining inside the existing pipe. It can be suitable where the drain has more extensive damage but is still structurally sound.

Before relining, the drain is usually inspected and cleared. If debris, grease, roots or silt are present, drain jetting may be used to clean the pipe before the liner is installed.

The liner is placed inside the pipe and cured to form a watertight layer. This gives the damaged pipe a new internal surface and can help restore flow without digging up the surrounding ground.

 

Drain excavation and replacement

Excavation may be needed where the drain pipe is fully collapsed, severely crushed, badly misaligned or too damaged for lining. In these cases, the affected section may need to be dug up, removed and replaced.

Excavation is more disruptive than no-dig repair, but sometimes it is the safest and most effective option. If the pipe has lost its structure completely, there may not be enough shape left for a liner or patch to work properly.

 

Drain rerouting

In some cases, the best solution may be to reroute part of the drainage system. This may be considered if the existing pipe route is no longer suitable, too badly damaged, difficult to access or affected by repeated problems.

 

Can you fix a collapsed drain without digging?

Sometimes, but not always. A partially collapsed drain may be suitable for a no-dig repair if the pipe still has enough structure for the liner or patch to be installed safely.

If the drain has fully caved in, excavation is usually required. A CCTV drain survey will show whether the pipe has partially collapsed, fully collapsed or suffered another type of structural fault.

Possible collapsed drain repair options include:

• Patch lining: Suitable for some localised damage where the pipe still has shape and structure.
• Full drain lining: Suitable for longer damaged sections if the drain is still structurally sound enough to accept a liner.
• Excavation and replacement: Needed when the pipe has fully collapsed or cannot be repaired from the inside.
• Rerouting: Used in more complex cases where the existing pipe route is no longer viable.

 

How much does drain pipe repair cost?

The cost of drain pipe repair depends on the type of damage, the location of the pipe, the access, the repair method and whether excavation is needed.

Drain repair cost factors can include:

• The length of pipe that needs repairing.
• Whether the pipe can be repaired without digging.
• The severity of the crack, leak, collapse or root damage.
• Whether CCTV inspection is needed first.
• Whether drain jetting or cleaning is needed before repair.
• How easy the pipe is to access.
• Whether the repair is domestic, commercial or emergency work.
• Whether reinstatement is needed after excavation.

 

Is drain pipe repair covered by insurance?

Drain repair may be covered by home insurance in some cases, but it depends on your policy, the cause of the damage and who is responsible for the pipework.

Damage caused by sudden events may be treated differently from wear and tear, poor maintenance or gradual deterioration. If the problem affects shared drains or public sewers, your local water company may need to be involved.

If you suspect damage, take photos of visible issues, keep records of symptoms and arrange a professional inspection. A CCTV drain survey report can help show what has happened inside the pipework.

 

When should you call a drainage engineer?

You should call a drainage engineer if you suspect a broken, leaking or collapsed drain pipe, or if the same blockage keeps returning after cleaning.

Call for help if you notice:

• Recurring blocked drains.
• Slow drainage across multiple fixtures.
• Outdoor pooling water or soft ground.
• Strong drain smells.
• Gurgling pipework.
• Visible leaks, cracks or pipe damage.
• Signs of pests around drains.
• Water backing up into the property.
• Suspected root damage or collapsed pipework.

These signs can point to deeper drainage faults that need proper inspection and repair.

 

How James Drains repairs broken drain pipes

James Drains & Sons have been repairing broken drains and delivering drainage services across Cheshire and the North West for over 30 years. No drain repair is too big or complex for our experienced team.

 

1. Initial assessment

We will ask what symptoms you have noticed, where the problem is happening, how long it has been going on and whether there are signs of leaking, flooding, smells or recurring blockages.

 

2. CCTV drain inspection

Where underground pipe damage is suspected, we can carry out a CCTV drain inspection to locate the fault and understand the condition of the pipework.

 

3. Drain cleaning or jetting

If the pipe contains debris, roots, grease, silt or other build-up, we may need to clean or jet the drain before repair work can take place.

 

4. Repair recommendation

Once the issue is understood, we can recommend the most suitable repair method. This may include patch lining, drain relining, excavation, replacement or another repair route depending on the damage.

 

5. Drain repair work

We use industry-rated drain repair methods and equipment to get your drains back in working order. Where possible, we will always aim to use the least disruptive suitable method for your property.

 

Drain repair services across Cheshire and the North West

Our team provides drain repair services for homes and businesses across Cheshire and the North West. We can help with cracked drains, leaking joints, collapsed pipes, root damage, recurring blockages and urgent drainage problems.

We also support related drainage services, including drain cleaning, drain jetting, CCTV drain inspections and emergency drainage support.

You can view the full list of areas we cover, or contact us for advice about drain repair work in your area.

 

Related drainage services

If you are trying to repair or diagnose a broken drain pipe, one of these services may be relevant:

• Drain repairs
• Drain lining
• CCTV drain inspections
• Drain camera inspection process
• Drain cleaning
• Drain jetting
• Blocked drains
• Emergency plumbers

 

Local drain repair support

James Drains & Sons provide drain repair and drainage services across Cheshire and the North West, including:

• Drain repairs Manchester
• Drain repairs Warrington
• Drain repairs Wigan
• Drain repairs Chester
• All areas covered

 

FAQs about repairing drain pipes

Can a broken drain pipe be repaired without digging?

Yes, some broken drain pipes can be repaired without digging. No-dig methods such as drain patching and drain relining may be suitable for cracks, small holes, leaking joints and some localised damage if the pipe is still structurally sound.

 

When does a drain pipe need excavation?

Excavation may be needed if the pipe has fully collapsed, is badly crushed, has lost its shape or cannot be safely repaired from inside. A CCTV drain inspection can help confirm whether excavation is necessary.

 

How do I know if my underground drain pipe is broken?

Common signs include recurring blockages, slow drainage, bad smells, water pooling outside, soft ground, gurgling noises, increased pest activity and visible leaks or cracks. CCTV inspection is the most reliable way to confirm underground pipe damage.

 

Can I patch a drain pipe?

Minor localised drain damage may be suitable for patch lining. This involves applying a resin patch inside the damaged section to create a watertight repair. Underground drain patching should be carried out by a professional drainage engineer.

 

Is drain lining better than excavation?

Drain lining is often less disruptive than excavation because it repairs the pipe from the inside. However, it is only suitable where the pipe is stable enough to accept a liner. Severe collapses may still require excavation and replacement.

 

What is the first step in repairing a broken drain pipe?

The first step is usually a CCTV drain inspection. This helps locate the damage, assess the pipe condition and choose the most suitable repair method.

 

Can a collapsed drain be repaired?

Yes, a collapsed drain can often be repaired, but the method depends on the severity. Partial collapses may be suitable for no-dig repair, while fully collapsed drains usually need excavation and replacement.

 

Can James Drains help with emergency drain repairs?

Yes. James Drains & Sons provide drain repair, inspection, cleaning and emergency drainage support across Cheshire and the North West. Call 0800 037 5112 or contact us for help.

 

Professional drain repairs from James Drains

If you suspect a broken, cracked, leaking or collapsed drain pipe, it is worth getting the issue checked before it causes more disruption.

James Drains & Sons provide professional drain repairs across Cheshire and the North West. We use industry-rated methods and equipment to inspect, diagnose and repair damaged drains as efficiently as possible.

For urgent or planned drain repair work, call 0800 037 5112, visit our drain repairs service page or get in touch with our team.