DRAIN LINING – NO DIG TECHNOLOGY

Drain Lining Process

No-Dig Technology is a proven, established method of placing a new pipe within an existing damaged pipe without the need for excavation, ensuring minimal disruption to your property.

The new drainage lining material is similar to GRP (glass-reinforced plastic) and, in all cases, will be superior in quality and strength to the pipe it replaces. The new pipe is molded into the damaged pipe using an ingenious method called ‘inversion,’ which utilizes water or air pressure to fit it tightly against the existing walls. When the inversion is complete, the originally flexible pipe becomes a rigid, strong, and tough structure. It fits tightly within the existing pipe, resulting in a minimal cross-sectional loss of only about 6%.

The liner is manufactured from a special dense, impermeable felt, tailored to fit the exact internal dimensions of the pipe being refurbished. The thickness of the drain lining repair material can be varied according to specific design requirements.

We utilize three special resin systems—Polyester, Silicate, and Epoxy—with varying curing times to suit different conditions and applications. These are securely impregnated into the liner prior to installation.

Expert Sewer Pipe Relining Solutions

The liner is suitable for sewers and vertical rainwater down pipes etc, 75mm – 300mmØ. It is resistant to most aggressive chemicals and can withstand extremely high temperatures.

A special resin containing an activating catalyst is impregnated into the pipe liner prior to installation.

Drain lining is suitable for sewers and vertical rainwater downpipes etc, 75mm – 300mØ. The liner is resistant to most aggressive chemicals and can withstand extremely high temperatures.

Once the pipe is cured, the inversion liner is removed leaving a strong and tough new pipe within the existing pipe. Any lateral pipes are reconnected by a remote controlled robotic cutter.

Long-Lasting Pipe Lining Repair Services

BENEFITS OF NO DIG TECHNOLOGY

  • Eliminates costly excavations and general disruption to the property.

  • Capable of repairing and curing leaking and open joints, root intrusion, cracks and all other associated pipe failure.

  • The process is accepted by Local Authorities, Loss Adjusters, Surveyors, Civil Engineers and Architects etc.

  • Achieves permanent structural repair.

  • Guarantees improved flow characteristics.

  • Will withstand ground movement far in excess of traditional drainage materials such as saltglaze, clayware, concrete etc.

  • Any cross-sectional loss is adequately compensated by increased flow efficiency.

  • Suitable for domestic, industrial, commercial and municipal applications.

  • Continual lengths of up to 100 metres can be installed in one length.

  • Minimum lengths of 0.5 of a metre can be installed for a local structural repair.

  • The materials used are extremely strong, abrasive resistant and do not rely on the existing pipe for its structural integrity.

  • A drain liner refurbishment will be ready for use within hours of installation.

  • Very cost effective, up to 75% savings have been achieved by drain lining over conventional methods.

  • Superior quality at lower cost means good value for money. The drain liner we use (Renoline) conforms with European Standard BSEN13566-F:2002.

Case Study 1: Drain Lining Beneath Heathrow Airport Bypass

In this case we lined 75 metres of 225 mm (9 inch) fractured clay pipe, beneath a bypass at Heathrow Airport. Using our drain lining (no dig technology), we were able to fix the drain and avoid excavation and the inconvenience of lengthy closure to the airport’s busy perimeter road.

Outside Drain Clearance
Drains Clearance Services
Main Drain Clearance

Case Study 2: Domestic Household Drain Lining

In this case, our customer had recently built an expensive decking, only to find afterwards that he had a broken sewer pipe beneath it.
Using drain lining technology we were able to repair the broken pipe without damaging his decking or excavating his garden, which would’ve been both disruptive and costly.

Domestic Drain Cleaning
Domestic Drain Cleaning
Domestic Drain Repair
Drain Repair Services
Outside Drain Clearance
hosehold drainage
Drainage Repair

Case Study 3: Domestic Drain Lining to Main Sewer

This case also involved a broken sewer pipe. This time going from a private house in a cul-de-sac to a drain in the main road.
We were able to line the drain to repair it without having to dig up the customers driveway or the pavement and road. Again this saved not only money, but also considerably less disruption to our customer and his neighbours.

Drainage Cleaning Service
Domestic Outside Drains
Main & Domestic Drain Cleaning
Drain Survey & Clearance
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FAQs

Q1. What is drain lining?

Drain lining (or drain relining) is a trenchless, “no-dig” technology used to repair damaged pipes. A flexible, resin-coated sleeve is inserted into the damaged pipe and inflated. Once the resin cures and hardens, it creates a new, structurally sound pipe within the old one.

Q2. How long does a drain liner repair last?

Drain pipe relining is designed to be a permanent structural repair. The high-quality resins and felt materials used are highly durable, resistant to chemicals and root intrusion, and often outlast traditional clay or concrete pipes.

Q3. Is sewer pipe relining suitable for all types of damage?

No-dig technology is excellent for curing leaking joints, root intrusion, cracks, and general pipe degradation. However, if a pipe has completely collapsed or lost its structural shape, traditional excavation may be required. We use CCTV surveys to determine the best approach.

Q4. Is drain pipe lining repair more cost-effective than digging?

Yes. Because it eliminates the need to dig up driveways, gardens, or roads, drain relining can offer up to 75% savings compared to the labor and reinstatement costs of traditional excavation methods.

Q5. Will drainage lining reduce the water flow in my pipes?

While the new liner does result in a minimal cross-sectional loss (approximately 6%), the smooth interior of the new GRP-like material actually improves the flow characteristics of the pipe, easily compensating for the slight reduction in diameter.