Prefabricated Bituminous Geomembrane

SBS-Modified Bitumen Waterproofing


Siplast Teranap is a high performance elastomeric bituminous geomembrane. Unique among waterproofing materials, Siplast Teranap combines SBS polymer and the highest quality asphalt with puncture resistant polyester reinforcements. This special combination dramatically increases performance in key areas such as mechanical properties, cold flexibility, elasticity, and resistance to the elements. The result is a geomembrane that is able to consistently maintain its integrity in an ever- changing, inconsistent environment.


For over 20 years, Teranap has proven itself as a reliable, practical, and durable liner for concrete and earthen canals, settling basins, embankment stabilization, dams, mine waste containment, waste water storage, reservoirs, and ponds.


Teranap Geomembrane has earned a successful performance record as the high performance solution for wastewater storage, fountains, reservoirs, and ponds.  Because Teranap Geomembrane has an NSF Potable Approval, it is also suitable for use in potable water storage and hatchery applications. To learn more about our SBS-modified bitumen waterproofing systems, click on a selection below.



Teranap 331 Teranap 431 Teranap GTX


To learn more about Teranap, complete the Request Information form or call 1-800-922-8800.

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Teranap Geomembrane Brochure