Drain Repairs

Repairing and renovating drains can now be done with the minimum of cost and disruption. Dyno-Rod have available a range of alternative, cost conscious solutions in addition to excavation.

Why drains need repairing - Drains and sewers may crack due to ground movement, subsidence, tree root infiltration, or corrosion - or they may totally collapse. The result is a structurally defective drain causing repeat blockages or leaks into the surrounding soil.

Finding the most effective, cost conscious repair solution - Whatever the problem, the most appropriate solution can be determined via Dyno-Rod's CCTV Surveying Service. This will detect the nature and extent of any structural fault, which will in turn assist the engineer in recommending the most appropriate repair technique.

Different Methods Of Drain Repair

Excavation - Normally used to:
a) replace short sections of pipe at a shallow depth or
b) a collapsed or structurally defective pipe which cannot be repaired using any of the No-Dig techniques listed below.

No-Dig (repairs without excavation)

Localine - Where defects are localised in a small area, this can be "patched" to produce a permanent high quality repair. Patches are applied by coating a fibre-glass mat with epoxy resin. The mat is then wrapped around an inflatable packer and pushed into position. The packer is inflated and the resin left to cure.

Section Lining - Where the drain is damaged along its length, the whole section can be lined. It involves the insertion of a lining "sock" impregnated with a polyester resin fibre along the length of the damaged drain. It is then moulded into place using air or water pressure and left to cure. The result is a new fibre reinforced pipe within the old damaged pipe.

The benefits of lining as a drain repair solution are:

Minimal cost
Minimal disruption and inconvenience
Resistant to leaks or root penetration
Minimal cross section loss
Speedy return to full function
Suitable for all types and sizes of pipework from 75mm diameter upwards

Relining pitch fibre pipework

Deformed pitch fibre pipe. Deformed pitch fibre pipe.

Rotary cutter re-rounds pipe and removes deformation. Rotary cutter re-rounds pipe and removes deformation.

Side view of reformed pipe with liner inserted. Side view of reformed pipe with liner inserted.

The solution is Dyno-Form; a pitch fibre renovation method stemming from years of research and development. Specialist equipment is used to re-round any defective pitch fibre pipe enabling the insertion of a liner that will set and hold the reformation.