Ratblock BagTM for Remotely Sealing Disused Drains/Sewers

Steve Vick International


To assess characteristics for the RatblockTM manufactured by Steve Vick International (SVI) to permanently block a redundant sewer lateral or drain. It is applicable to clay, concrete, PE and 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 RatblockTM 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 bag that has two articulated steel plate membranes. The bag is pushed into the drain to the required position using drain rods. Once cured, the foam provides water, odour and gas tight seal within the pipe while the steel membrane prevents the passage of vermin.

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.