Subject to inspection, displaced joints, fractures, cracks, tree-root damage, collapsing/deformed pipes and other faults, may be repaired by patching or lining.
This will restore the integrity of the run and prevent further deterioration. Patch/Lining can be carried out internally, or in drain runs under ground and buildings.
Lining involves repairs to an extended drain run. Patching allows a specific spot repair 50 or 100mm long to be made in a drain run.
Our specialist trained team will use the latest methods and technology to introduce a resin soaked liner section which is then fixed in place and cured under pressure.
Called CIP (cured-in-place) lining/patching, this forms a high strength tube inside a tube.
The resultant lining reduces internal friction helping flow rate and can actually be stronger than the pipe around.
Runs can often be used again the same day.
Benefits of CIP Lining
- More cost effective to line a drain at depth than to excavate and repair
- Less disruptive i.e. losing the need to bring heavy plant to site and open ground causing noise disruption and other inconveniences
- (for school projects this is a key element)
- Reduces health and safety hazards and risks associated with excavation works
- Most effective method in treating and repairing root susceptible pipe-work as roots can re-penetrate PVC pipe repairs
- Able to withstand corrosive chemical discharge from the property
- Leaves a stronger pipe intact than existing
- Comes with a 10 year guarantee
- An effective method for lining difficult access areas i.e. drains below buildings/stairwells, etc
Estimating for Patch Lining for Remedial Works
Once a CCTV drainage survey is complete, the survey will be processed by our CCTV department.
The survey report and footage will then be carefully reviewed and the relevant remedial course of action is considered when estimating. If a fault is deemed repairable by way of lining/patch lining this will be the first consideration due to the reasons aforementioned. However, if lining is not considered to be feasible then the next course of action is deemed to be repair by excavation. Such instances can include collapsed and large displaced joints, fractured junctions, etc.
To find out more about what C Hanlon Drainage can do, read our drainage case studies.