DrainBlok®

Reliable Pollution Containment

DrainBlok™ is our versatile, entry-level pollution control solution. An easy-to-use, portable kit designed for sealing off drains or ducts. An essential addition to any spill kit or maintenance toolkit, it provides a practical and reliable way to manage spill containment.

Developed in 2006 by our engineers, DrainBlok™ was originally designed as a more efficient way to block drains without requiring entry into confined or hazardous spaces. A single DrainBlok™ system can deploy multiple stoppers, keeping operators safe, dry, and protected from contamination. 

We actively use the DrainBlok™ system in our operations, with our engineers relying on it during jobs that require manhole entry. Having the DrainBlok™ system installed helps to ensure a clean and dry workspace, which enhances both productivity and safety during critical tasks.

A Practical Solution for Basic Pollution Control


The Fixed DrainBlok™ is a cost-effective fixed drainage closure device. Ideal for sites that recognise a potential pollution risk or firewater runoff hazard that cannot yet justify an investment to fit BAT (best available technology). However, it is recommended to conduct an environmental risk assessment in accordance with CIRIA C736 before ruling out BAT as a long-term solution. While stopper systems like DrainBlok™ are effective for short-term containment, they may not suffice if pollutants need to be contained for extended periods.

The Fixed DrainBlok™ is pre-installed in the outlet of a manhole chamber, eliminating the need for confined space entry when resetting the stopper. This simplifies operations while improving safety and minimising disruption.

Safe and Reliable Spill Containment

DrainBlok™ offers a simple, reliable solution for pollution containment and supports businesses in taking proactive steps to manage their environmental risks without incurring excessive costs or disruptions to service. Whether you need a portable spill response tool or a fixed system to enhance your site’s safety and compliance, DrainBlok™ can be tailored to suit your needs. Don’t leave your site’s environmental protection to chance. Contact us to learn more about how DrainBlok™ can support your pollution control strategy and ensure CIRIA C736 compliance. 

Have questions about Drainblok?

Don’t wait for a spill to take action! Get in touch today to find out how Drainblok™ can be customised to your site and help you meet CIRIA C736 compliance with confidence. Call us on 01299 823158 or email us today.