A UV-exposed design life of up to 100 years

Testing of Teranap samples taken from motorway ditches after 20 years showed no significant reduction in tensile strength.

The benefits of Teranap have been confirmed by the extensive canal lining trials conducted by the US Bureau of Reclamation (USBR) to assess the performance of various canal lining systems. In a recent test in 2011, 20 year-old coupons from a Teranap lined fully exposed irrigation canal found surface cracking had not even passed through the product’s top sacrificial layer to reach the geotextile reinforcement. 

Assuming penetration rates are linear over time, it would take more than 60 years before  Teranap 431 (4.0mm) experienced a crack that reached even half of the products original thickness, while Ternap 531 (5.0mm) and Teranap 631 (6.0mm) grades would take decades longer to reach 50 per cent degradation.

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Teranap seam from Khronenbourg, France. Installed in 1981

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Casper Alcova Irrigation Canal. Installed in 1991 using Teranap

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