Drain damage is a common issue that can be costly to repair, whether in new or older buildings. It can occur due to factors such as tree root intrusion, construction work, or aging pipes. Understanding the causes of these problems can help you prevent expensive repairs. 

Tree root ingress 

Why It Happens:
Tree roots search for water and can infiltrate drains through even the smallest cracks in the pipes. Once inside, they grow and spread, leading to significant blockages. 

Common Signs Include: 

• Frequent blockages, particularly during dry spells or autumn 

• Slower drainage in sinks or toilets 

• Gurgling noises or unpleasant odours from drains 

Prevention and Solutions: 

• Regular root cutting and drain lining 

• CCTV inspections in areas with dense tree coverage or clay soil 

• Avoid planting trees near underground drainage systems 

Why It Happens:
During droughts or hot summer months, clay-rich soil dries out, causing it to shrink and shift. This can result in cracks in structures and often misaligned or damaged drainage pipes. 

Drainage Impact: 

• Collapsed or displaced pipes 

• Undetected leaks that worsen over time 

• Drainage problems following dry periods 

What to Do: 

• Inspect your drains after extreme heat or drought conditions 

• Monitor for new cracks in walls, pathways, or other surfaces 

• Use CCTV drain surveys to detect any underground pipe damage 

Why It Happens:
Over time, older clay pipes become brittle and prone to wear. Even if there are no obvious signs of damage, these systems may be approaching the end of their service life. 

Warning Signs: 

• Frequent leaks or slow drainage 

• Increased root intrusion due to cracks 

• Visible deterioration of pipework in CCTV inspections 

Recommended Actions: 

• Plan for regular inspections 

• Consider pipe lining or partial replacements before a major failure occurs 

• Upgrade old materials to modern, durable solutions 

Why It Happens:
Even newly constructed properties can experience drainage issues due to rushed or substandard installation practices. 

Common Problems Include: 

• Incorrect gradients that cause water to stagnate in pipes 

• Misaligned pipes or loose fittings 

• Blockages occurring shortly after moving in 

Recommended Actions: 

• Request an independent drainage survey before purchasing 

• Address early signs of drainage issues promptly 

• Don’t assume that new builds are problem-free 

Why It Happens:
Heavy construction, traffic, or machinery on the surface can exert stress on underground pipes, leading to cracks or breakages. 

At-Risk Situations: 

• Properties located near roads, driveways, or areas with frequent construction 

• Pipes installed beneath patios, extensions, or new buildings 

Best Practices: 

• Perform CCTV surveys before and after construction work 

• Avoid placing heavy loads directly over drainage paths 

• Reinforce vulnerable areas where possible 

Professional drain repair methods and recommendations 

Non-invasive over excavation
Where possible, trenchless methods like drain lining or patch lining are preferred over digging. This is because these repairs are quicker, cheaper, and far less disruptive, especially in homes with underfloor heating or high-end finishes. 

If a pipe is fully broken or crushed, digging it up might be the only fix. But if the damage is smaller, it can usually be repaired with a lining. 

Smart maintenance tips: 

• Don’t wait for visible problems, instead book regular inspections 

• Explore lining options before committing to major works 

• Get a second opinion if excavation is recommended right away 

Need drain repairs or an inspection? 

Whether you keep getting blockages, are buying a new home, or just want to be sure everything’s okay, our drainage team is here to help. We offer quick, professional drain checks and repairs, all tailored to what you need.