Geonet Drainage Layer

• Drainage Board vs. Drainage Geonet: Which One is Right for Your Project?

  Jul 09, 2026

  What are Drainage Board and Drainage Geonet? Drainage is an important part of many construction, environmental, and geotechnical projects. When groundwater, rainwater, or other liquids cannot be discharged effectively, excess water pressure may build up and affect surrounding structures, soil stability, waterproofing systems, and long-term project performance.   Drainage boards and drainage geonets are both geosynthetic materials developed to provide controlled pathways for water. However, they use different structural designs and are better suited to different engineering conditions.   A drainage board is generally manufactured from a polymer sheet with a three-dimensional dimpled, studded, or profiled structure. When installed against a wall, foundation, roof, or other surface,...

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