TrackTex is a multilayer composite with a unique microporous filter media protected by specially engineered protective nonwoven geotextiles. The filter is an orientated microporous polymeric film with a series of microcells and interconnecting pores, characterised by its relative strength and ability to transmit vapour.
TrackTex can effectively facilitate the passage of liquid under pressure, but the pores are such that the passages of clay fines are not prohibited. Without pressure, water cannot pass through the filter, therefore any underlying clay formation will, over time dry out and have an improved modulus.