Using drain guards on site

Here at Laing O’Rourke, we are continuously seeking ways to help reduce the impact of construction processes on the environment.

After completing the demolition and beginning the piling phase on one of our projects in Paddington, the footprint of the site was comprised entirely of exposed loose muck and piling mat aggregate. There was therefore an increased potential for silty water to enter the London drainage system… here was our dilemma.

How did we manage this… well we procured a number of geotextile drain guards for all of the surface water drains within and on the boundary of our site. These drain guards are not only designed to remove sediment but also oil from surface water running off site, and therefore reducing the likelihood of pollution significantly.

These have proved highly successful and the amount of sediment removed from the water is quite outstanding.


  • Easily placed and fitted in to drains (simply cut to size)
  • Captures both sediment and oil
  • Can be emptied and reused for 3 – 6 months dependent on conditions

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