Drainblock Bag™ for Remotely Sealing Disused Drains/Sewers

Steve Vick International


To assess characteristics for the Drainblock Bag™ as manufactured by Steve Vick International (SVI) to permanently block a redundant sewer lateral or drain. It is applicable to clay, concrete, metal and plastic pipes for sizes of for 100mm (4”) and 150mm (6”) pipes. Other dimensions can be made to special order.

Product Description

The Drainblock Bag™ uses expanding polyurethane resin foam with a delayed gel formula, which is mixed in a sealed sachet. The sachet is mixed and then placed in a zippered Drain Block Bag™ and pushed into the drain to the required position using drain rods. As the resin foam expands it forms a solid plug within the host pipe approximately 300mm in length.

Full details can be found in the Assessment Schedule opposite.


Approval period

2nd September 2017 - 2nd September 2022

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View Assessment Schedule.