What is Drain Relining? A Complete Guide for Dorset Homeowners

If you live in Dorset and your drains are suffering from cracks, leaks, or root intrusion, you may have heard of “drain relining.” But what exactly is it, how does it work, and is it the right solution for your property?

In this guide, we’ll explain everything Dorset homeowners and businesses need to know about drain relining: the process, the advantages, limitations, and why it’s often more affordable and less disruptive than traditional excavation.

What is Drain Relining?

Drain relining — also known as no-dig drain repair — is a trenchless method that repairs damaged drains without digging up your garden, driveway, or floors.

A flexible liner, coated in resin, is inserted into the damaged pipe and then cured in place. This forms a strong “pipe within a pipe,” sealing cracks and restoring flow. It’s one of the most effective modern solutions for fixing damaged drainage pipes in Dorset without major disruption.

How Drain Relining Works (Step by Step)

1. CCTV inspection – A camera is sent through the drain to assess damage such as cracks, leaks, or root ingress.

2. Cleaning – High-pressure jetting clears debris and roots, preparing the surface.

3. Liner insertion – A resin-soaked liner is fed into the pipe and inflated to fit tightly against the walls.

4. Curing – The resin hardens using hot water, steam, or UV light, creating a new structural lining.

5. Final checks – CCTV is used again to ensure the repair is solid and flow is restored.

Benefits of Drain Relining in Dorset

• ✅ Minimal disruption – no need to dig up gardens, patios, or roads.

• ✅ Cost-effective compared to excavation and reinstatement.

• ✅ Durable – a relined pipe can last 30–50 years.

• ✅ Stops leaks and root ingress permanently by sealing cracks.

• ✅ Environmentally friendly – less waste and less mess.

Limitations of Drain Relining

While powerful, relining isn’t always the answer:

• ❌ Not suitable if the pipe is completely collapsed or missing sections.

• ❌ Access is required to at least one end of the pipe.

• ❌ There may be a slight reduction in pipe diameter (though smooth resin lining often improves flow overall).

When Should Dorset Property Owners Consider Relining?

You should consider drain relining if:

• You have recurring blockages from cracks, leaks, or tree roots.

• Your drains run under hard-to-access areas (driveways, extensions, patios).

• CCTV has shown damage but the pipe is not fully collapsed.

• You want a long-term solution without disruptive excavation.

Cost of Drain Relining in Dorset

The cost varies depending on:

• Pipe length & diameter

• Location & accessibility

• Type and severity of damage

While excavation can cost thousands (especially if driveways or landscaping are involved), relining is often far cheaper overall and includes less property damage.

👉 The best first step is to book a CCTV survey with a Dorset drainage specialist to get a tailored quote.

FAQ: Drain Relining in Dorset

Q: How long does drain relining take?A: Most Dorset homes can be relined in a few hours to a day, depending on the job.

Q: Is drain relining as strong as a new pipe?A: Yes, the cured resin forms a strong new pipe within the old one, expected to last 30–50 years.

Q: Can relining fix tree root damage?A: Yes — after roots are cleared, relining seals the pipe so roots can’t re-enter.

Q: Do I need planning permission in Dorset?A: No — relining is considered maintenance/repair, not major works.