Structural Patch Lining

‘No Dig’ Structural Patch Lining

Our ‘No Dig’ Structural Patch Lining system is ideal for repairing damage caused by water infiltration and root intrusion, as well as cracks and fractures. Your time and money can be saved by using this quick and efficient means of repair.
Structural Patch Lining is a small localised means of repair which eliminates the need for full length drain relining. If flow packers are not used, over-pumping of water would be required – and this would lead to an unnecessary expense against your budget.
By using different types of resin and different additives, reaction times can be tailored to suit site conditions.

A subsequent compression test confirms that the inserted liner will provide a suitable impermeable lining to the host pipe.
The diagrams below illustrate how Strutural Patch Lining works.

Structural Patch Lining – Step 1

Structural Patch Lining - Step 1


Structural Patch Lining – Step 2

Structural Patch Lining - Step 2


Structural Patch Lining – Step 3

Structural Patch Lining - Step 3


Drain Relining

Where the area of damage is too great for Structural Patch Lining to be used, Drain Relining is a more cost effective option to excavation. In this repair, a resin-impregnated liner is inserted into the damaged drain, and expanded using water or air pressure. The liner is held in place against the sides of the damaged drain until it cures. The type of resin used and the ambient temperature impact upon the curing time, but in most cases, Drain Relining can be installed and cured on the same day.
The diagram below shows the damaged original pipe and the new resin liner, how Drain Relining creates ‘a pipe within a pipe’.

Drain Relining



Where there is no other option, it may be necessary to excavate in order to replace the damaged drains. A&A Drain Services maintains its own excavators to ensure your repairs can be completed quickly and effectively.