Dam liners are made in a flat sheet from Damtuff .4mm Dam Liner.

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It is puncture resistance far exceeding any standard HDPE liner at similar gauges. Tests conducted by Borealis (the leading specialty polyethylene manufacturer in Europe) on commercial samples of material taken from the Australian Market, show Damtuff to be superior in performance. Damtuff has very good UV stability and weathering characteristics, as a result of using a carbon black of high quality and fine particle size, dispersed evenly throughout. Damtuff's chemical, physical and biological properties ensure it can be safely used with potable water and in a wide range of applications requiring moisture retention and soil conservation.