When building embankments on soft, cohesive clay and peat soils, soil is very slow to consolidate. Colbonddrain eliminates the waiting for time-consuming settlement, creating sub-grades that would otherwise be too weak for construction.

Using Colbonddrain can cut the time required for 90% soil consolidation from 20-25 years without the use of Prefabricated Vertical Drains (PVD) to just a few months, saving designers and clients significant time and cost. Colbonddrain is predictable, in both technical and financial terms, and has proven itself in hundreds of projects in the last thirty years. Over 300 million linear meters of this prefabricated vertical drain have been installed worldwide to date.

With its optimized nonwoven, Colbonddrain delivers effective filter stability in soft soils. Colbonddrain is flexible and can follow the contours of the consolidating soil as it deforms without significant reduction of its drainage capacity.

The Colbonddrain filter protects the drainage core from even the finest soil particles, ensuring a free drainage path to discharge excess pore water. 

Its specific characteristics ensure that Colbonddrain will go on draining off pore water effectively over its entire working life.



Colbonddrain is easy too handle and is delivered in compact well wrapped packs of 300 lm which make it practical to install up 10,000 to 15,000 lm per day per installation rig.

For more information on Colbonddrain and its uses, please go to the Colbonddrain product information.