ðeɪ kæn ˈɔːlsoʊ biː mˌænjuːfˈæktʃɚd wɪð ɐ fˈæbɹɪk skɹˈɪm bᵻtwˌiːn tˈuː plˈaɪz ʌvðə pˈɑːlɪmɚ, ˈiː.dʒˈiː., pˈiːˈɑːɹ, sˈiːspˈiːˈɑːɹ, ˈɛf pˌiːpˈiːˈɑːɹ ænd ˈɛpdəmˈɑːɹ. dʒˌiːoʊmˈɛmbɹeɪnz kæn ˈɔːlsoʊ biː mˌeɪd ɪnsˈɪɾuː baɪ spɹˈeɪɪŋ ɐ pˈɑːlɪmɚ pˌɑːlɪjuːɹˈiə, ɔːɹ ˈiːkwəl dᵻɹˈɛktli ˌɔn ɐ dʒˌiːoʊtˈɛkstaɪl sˈʌbstɹeɪt.
They can also be manufactured with a fabric scrim between two plys of the polymer, e.g., PE-R, CSPE-R, fPP-R and EPDM-R. Geomembranes can also be made in-situ by spraying a polymer (polyurea, or equal) directly on a geotextile substrate.