Hoʻokaʻawale ʻia ka geomembrane (composite anti-seepage membrane) i hoʻokahi lole a me hoʻokahi membrane a ʻelua lole a me hoʻokahi membrane, me ka laulā o 4-6m, he kaumaha o 200-1500g / square mika, a me nā hōʻailona hana kino a me ka mechanical e like me ka ikaika tensile, ke kū'ē i ka waimaka, a me ka pohā. Kiʻekiʻe, loaʻa i ka huahana nā hiʻohiʻona o ka ikaika kiʻekiʻe, ka hana elongation maikaʻi, ka modulus deformation nui, ka waikawa a me ke kūpaʻa alkali, ke kūpaʻa corrosion, ke kūpaʻa ʻelemakule, a me ka impermeability maikaʻi. Hiki iā ia ke hoʻokō i nā pono o nā hana ʻenekinia kīwila e like me ka mālama ʻana i ka wai, ka hoʻokele aupuni, ke kūkulu ʻana, ka lawe ʻana, nā subways, tunnels, kūkulu ʻenekinia, anti-seepage, kaawale, hoʻoikaika, a me ka hoʻoikaika anti-crack. Hoʻohana pinepine ʻia ia no ka mālama anti-seepage o nā pā a me nā auwai, a me ka mālama anti-pollution o nā ʻōpala.