Drain Renovation Patch Repair Service - DALROD

Описание: DALROD - The Patching Process.

Benefits of patching pipework
1. No digging, no costly excavation
2. No road closing required, minimum disruption
3. High quality patches, guaranteed for 25 years (?)
4. Time saving process, money saving solution.


Patching of pipework takes place following an initial CCTV camera survey that will have revealed a damaged area.

Once the problem has been identified the pipe can be repaired by patching the damaged area or areas. Patching provides a highly efficient and cost-effective solution for most pipework damage. DALROD do provide a full relining service for pipework that is badly damaged or where numerous patches would be required.

The patching process begins with the pipework being high pressure water jetted to clean out any debris, silt, tree roots etc. The camera is sent through again to ascertain the size of patch required and to mark the exact location of the damaged area.

Following the jetting and camera work, the patch is cut to size and the resin is painted onto the fibreglass patching material. At this stage the air bag that will inflate to hold the patch in place is also being prepared.

The impregnated patch is then wound onto the air bag and inserted through the damaged pipe to the previously marked-out location that the camera had identified. Once the patch is in place it is inflated via the air bag to take on the shape of the existing pipe. The patch is then left to cure.

Curing time varies according to temperature but ambient curing normally takes approx. 1 hour to harden.

The air bag is then deflated and pulled back through the pipe, leaving a solid and hardwearing repair in place.

The camera is run through again to check that there are no problems and a copy of the video can be supplied if required.




There may be situations when excavation isn't necessary, but neither is the installation of a full liner. With Lanes, there is another way to repair your sewer, drain or pipe — patch it. The process of patch repairing a sewer is similar to that of relining but, as the name suggests, it involves installing a short liner in a specific section of the sewer or drain, rather than lining the whole pipe.

The Pipe Doctor repair is installed internally as a patch lining which eliminates the need for disruptive and time consuming excavation and costly reinstatement works leaving vehicles and pedestrians to move around without obstruction.

Whether it's a full length drain liner or and patch line repair, we can provide an excellent quality no dig solution with our 'C' line equipment.

Disruption is kept to a minimum and its a fast and effective solution which provides a new pipe within a pipe