The Top Hat repair system is used to seal lateral connections that are damaged, leaking or taking in surface water. It is similar to the Localised Patch Repair where a length of lining material is impregnated with resin. The lining is installed over the defective section of drainage and is then held under pressure inside the drain until it is cured hard. Swift Drain Services patch repair system can be used to stop water infiltration through leaking joints or damaged areas of pipe. Lateral or side connections can be reopened using our own lateral connection cutting robot.