Geosynthetic Clay Liner (GCL)

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CETCO® Geosynthetic Clay Liners (GCLs) are high performance environmental liners manufactured with durable high-strength geotextiles and a uniform layer of low-permeability sodium bentonite. The bentonite’s high swelling capacity and low permeability provide an effective hydraulic seal.

A GCL is used primarily as a substitute for compacted clay liners in areas such as landfills, secondary containments and surface impoundments. Bentomat GCL's provide advantages in cost and ease of installation.

Bentomat offers needle-punched reinforcement to meet the high internal shear strength requirements of steep slope projects.

Cetco’s GCL meets stringent Quality Control and Assurance testing for strength, durability and consistency. Production and research laboratories are GAI-LAP Certified. Cetco also use independent laboratories to verify their results. Manufacturing Quality Control data is available for each project.


General Areas of Application